Yamaha YFM250XS manuel d'utilisation

4XE-F8199-16 LIT-11626-17-22 READ THIS MANUAL CAREFULLY! It contains important safety information. This ATV should not be ridden by anyone under 16 years of age. WARNING YFM250XS OWNER’S MANUAL PRINTED IN USA 2003.04-4.0 × 1 CR (E) PRINTED ON RECYCLED PAPER Y AMAHA MO T OR CO . , L TD . EBU00438 LOCATE AND READ OWNER’S MANUAL. FOLLOW ALL INSTR[...]

EBU00776[...]

EBU00941 1- INTRODUCTION Congratulations on your purchase of the Yamaha YFM250X. It repre sents the result of many years of Yamaha experience in the production of fine sporting, touring, and pace-setting racing machines. With the purchase of this Yamaha, you can now appreciate the high degree of crafts- manship and reliability that have made Yamaha[...]

EBU00801 1- IMPORTANT MANUAL INFORMATION FAILURE TO FOLLOW THE WARNINGS CONTAINE D IN THIS MANUAL CAN RESULT IN SERIOUS INJURY OR DEATH. Particularly important information is distinguished in this manual by the following notations: The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED! W ARNING Failure to follow WARNING ins[...]

AFFIX DEALER LABEL HERE EBU00011 IMPORTANT NOTICE This machine is designed and manufactured for OFF-ROAD use only. It is illegal and unsafe to operate this machine on any public street, road or highway. This machine complies with all applicable OFF-ROAD noise level and spark arrester laws and regulations in effect at the time of manufacture. Please[...]

EBU00014 W ARNING Indicates a potential hazard that could result in serious injury or death. CONTENTS LOCATION OF THE WAR NING AND SPECIFICATION LABELS ....... 1-1 SAFETY INFORMATION.................. 2-1 DESCRIPTION AND MA CHINE IDENTIFICATION ............................. 3-1 Identification number records .......... 3-2 Key identification number [...]

PRE-OPERATION CHECKS ........... 5-1 Front and rear brakes ......... ............ 5-3 Fuel ................................................. 5-5 Engine oil ........................................ 5-7 Final gear oil .................................... 5-7 Throttle lever ................................... 5-7 Fittings and fasteners ...............[...]

PERIODIC MAINTENAN CE AND ADJUSTMENT .................................. 8- 1 Owner’s manual and tool kit ............ 8-1 Periodic maintenance/ lubrication ...................................... 8- 3 Engine oil .............................. ........... 8-5 Final gear oil .................................... 8-9 Spark plug inspection ............[...]

SPECIFICATIONS.. ........................ 10-1 NOISE REGULATION .................... 11-1 MAINTENANCE RECORD ............ 12-1 ATV LIMITED WARRANTY............ 13-1 YAMAHA EXTENDED SER VICE (Y.E.S.) ........................................... 14-1 10 11 12 13 14 U4XE16.book Page 4 Monday, March 24, 2003 3:14 PM[...]

1-1 EBU00464 1 - LOCATION OF THE WARNING AND SPECIFICATION LABELS U4XE16.book Page 1 Monday, March 24, 2003 3:14 PM[...]

1-2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Read and understand all of the labels on your machine. They contain important information for safe and proper operation of your ATV. Never remove any labels from your ATV. If a label becomes difficult to read or comes off, a replacement label is available from your Yamaha dealer. Overloading this A TV or carryin[...]

1-3 Overloading this A TV or carrying cargo improper ly can change handling. stability and braking performance and can lead to an accident. Never e xceed the maximum rear cargo limit of : 45kg (99 lbs) NEVER sit on the carrier. Refer to instructions in the Owner's Manual. 4XE-F4897-30 W ARNING 3 4 5 U4XE16.book Page 3 Monday, March 24, 2003 3:[...]

1-4 6 7 8 9 U4XE16.book Page 4 Monday, March 24, 2003 3:14 PM[...]

2-1 SAFETY INFORMATION EBU00924 AN ATV IS NOT A TOY AND CAN BE HAZARDOUS TO OPERATE . An ATV handles differently from other vehicles including motorcycles and cars. A collisi on or rollover can occur quickly, even during routine maneuvers such as turning and riding on hills or over obstacles, if you fail to take proper precautions. SEVERE INJURY OR[...]

2-2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ● Never operate an ATV without wearing an approved motorcycle helmet that fits properly. You should also wear eye protection (goggles or face shield), gloves, boots, long-sleeved shirt or jacket, and long pants. ● Never consume alcohol or drugs before or while operating this ATV. ● Never operate at speeds [...]

2-3 ● Always follow proper procedures for climbing hills as described i n this manual. Check the ter- rain carefully before you start up any hill. Never climb hill s with excessively slippery or loose surfaces. Shift your weight forward. Never open the throttle suddenly or make sudden gear changes. Never go over the top of a hill at high speed. ?[...]

2-4 ● Always be careful when skidding or sliding. Learn to safely control skidding or sliding by prac- ticing at low speeds and on level, smooth terrain. On extremely slippery surfaces, such as ice, go slowly and be very cautious in order to reduce the chance of skidding or sliding out of con- trol. ● Never operate an ATV in fast flowing water [...]

2-5 WA R N I N G POTENTIAL HAZARD Improper handling of gasoline. WHAT CAN HAPPEN Gasoline can catch fire and you could be burned. HOW TO AVOID THE HAZARD Always turn off the engine when refuel- ing. Do not refuel right after the engine has been running and is still very hot. Do not spill gasoline on the engine or exhaust pipe/muffler when refueling[...]

2-6 WA R N I N G POTENTIAL HAZARD Starting or running the engine in a closed area. WHAT CAN HAPPEN Exhaust fumes are poisonous and may cause loss of consciousness and death within a short time. HOW TO AVOID THE HA ZARD Always operate your ATV in an area with adequate ventilation. U4XE16.book Page 6 Monday, March 24, 2003 3:14 PM[...]

3-1 EBU00032 1- DESCRIPTION AND MACHINE IDENTIFICATION 1. Spark arrester 2. Rear carrier 3. Seat 4. Fuel tank cap 5. Front carrier 6. Brake ped al 7. Rear brake ligh t switch 8. Front wheel 9. Headli ght 10. Fuel cock 11. Starter (c hoke) 12. Recoil starter 13. Tail/brake light 14. Rear wheel 15. Shift pedal 16. Drive select lever 17. Rear brake le[...]

3-2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 EBU00600 Identification number records Record the key identification number, vehicle identification number and model label infor- mation in the spaces provided for assistance when ordering spare parts from a Yamaha dealer or for reference in case the vehicle is stolen. 1. KEY IDENTIFICATION NUMBER: ACA-02E 2. VE[...]

3-3 EBU00036 Vehicle identification number The vehicle identification number is stamped into the frame. 1. Vehicle identification number N O TE: The vehicle identification number is used to identify your machine. EBU00787 Model label The model label is affixed to the location in the illustration. Record the information on this la- bel in the space [...]

4-1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 EBU00039 CONTROL FUNCTIONS W ARNING Indicates a potential hazard that could result in serious injury or death. EBU00942 Main switch Functions of the respective switch positions are as follows: ON: The engine can be started only at this position and the headlights and taillight come on when the light switch is on[...]

4-2 EBU00043 Indicator lights 1. Reverse indicator light “ R ” 2. Neutral indicator light “ N ” EBU00602 Reverse indicator light “ R ” This indicator light comes on when the trans- mission is in reverse. EBU00603 Neutral indicator light “ N ” This indicator light comes on when the trans- mission is in neutral. EBU00053 Handlebar swi[...]

4-3 EBU00056 Start switch “ START ” The starter motor cranks the engine when this switch is pushed. CAUTION: _ See starting instructions prior to starting engine (see page 6-1 for details). _ NO TE: _ If the starter switch is pushed with the main switch “ ON ” and the engine stop switch “ OFF ” , the starter motor will be activated but [...]

4-4 EBU00062 Throttle lever Once the engine is running, movement of the throttle lever will increase the engine speed. Regulate the speed of the mach ine by varying the throttle position. Because the throttle is spring-loaded, the machine will decelerate, and the engine will return to an idle any time the hand is removed from the throttle lever. Be[...]

4-5 EBU11590 Speed limiter The speed limiter keeps the throttle from fully opening, even when the throttle lever is pushed to the maximum. Turning in the ad- justing screw limits the maximum engine pow- er available and decreases the maximum speed of the ATV. 1. Locknut 2. Adjusting screw a. 12 mm (0.47 in) WA R N I N G POTENTIAL HAZARD Improper ad[...]

4-6 EBU00070 Front brake lever The front brake lever is located on the right handlebar. Pull it toward the handlebar to ap- ply the front brake. 1. Front brake lever EBU00073 Rear brake pedal and lever The brake pedal is located on the right side of the machine and the brake lever is located on the left handlebar. Push down on the pedal or pull the[...]

4-7 1. Rear brake lever U4XE16.book Page 7 Monday, March 24, 2003 3:14 PM[...]

4-8 EBU00074 Parking brake Use the parking brake when you have to start the engine or park the machine, especially on a slope. Apply the rear brake lever and push down the lock plate to apply the parking brake. Squeeze the rear brake lever to re- lease the parking brake. 1. Lock plate WA R N I N G POTENTIAL HAZARD Improper use of the parking brake.[...]

4-9 EBU00083 Shift pedal This machine is equipped with a constant- mesh 5-speed transmission. The shift pedal is located on the left side of the engine. Neutral is at the bottom position. 1. Shift pedal N. Neutral position EBU0008 5 Drive select lever The drive select lever is used for driving the machine either forward or in reverse. Refer to page[...]

4-10 EBU00590 Recoil starter Firmly grasp the handle and pull slightly until engagement can be felt. Then pull forcefully, being careful not to pull the rope all the way out. 1. Recoil starter WA R N I N G POTENTIAL HAZARD Starting the engine in gear and/or start- ing the engine without setting the park- ing brake. WHAT CAN HAPPEN The ATV could sta[...]

4-11 EBU00092 Fuel tank cap Remove the fuel tank cap by turning it coun- terclockwise. 1. Fuel tank cap U4XE16.book Page 11 Monday , March 24, 2003 3:14 PM[...]

4-12 EBU00093 Fuel cock The fuel cock supplies fuel from the fuel tank to the carburetor. The fuel cock has three positions. OFF: With the lever in this position fuel will not flow. Always turn the lever to this position when the engine is not running. ON: With the lever in this position, fuel flows to the carburetor. Normal riding is done with the[...]

4-13 EBU00094 Starter (choke) Starting a cold engine requires a richer air-fuel mixture. A separate starter circuit supplies this mixture. Move in direction a to turn on the starter (choke). Move in direction b to turn off the starter (choke). Refer to “ Starting a cold engine ” fo r proper op- eration. (See page 6-1.) 1. Fully-open 2. Half ope[...]

4-14 EBU00567 Seat To remove the seat, pull the seat lock lever upward and pull up the seat at the rear. 1. Seat lock leve r U4XE16.book Page 14 Monday , March 24, 2003 3:14 PM[...]

4-15 To install the seat, insert the projections on the front of the seat into the seat holders and push down on the seat at the rear. N O TE: Make sure that the seat is securely fitted. 1. Proj ection ( × 2) 2. Seat holder ( × 2) EBU0058 1 Storage box CAUTION: To protect from damage, do not put metal products, like tools or sharply edged prod- u[...]

4-16 EBU00582 Front carrier EBU00583 Rear carrier EBU01103 Rear shock absorber adjustment The spring preload can be adjusted to suit the rider ’ s weight and riding conditions. Adjust the spring preload as follows: To increase the spring preload, turn the ad- justing ring in direction a . To decrease the spring preload, turn the ad- justing ring [...]

4-17 1. Special wrench EBU00112 W ARNING Indicates a potential hazard that could result in serious injury or death. Standard position: B A - Minimum (soft) E - Maximum (hard) U4XE16.book Page 17 Monday , March 24, 2003 3:14 PM[...]

5-1 1- PRE-OPERATION CHECKS Before using this machine, check the following points: ITEM ROUTINE PAGE Front brake • Check operation, free play, fluid level and fluid leakage. • Fill with DOT 4 brake fluid if necessary. 5-3, 8-20 – 8-23 Rear brake • Check operation, condition and free play. • Adjust if necessary. 5-3, 8-20 – 8-26 Fuel •[...]

5-2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 WA R N I N G POTENTIAL HAZARD Failure to inspect the ATV before oper- ating. Failure to properly maintain the ATV. WHAT CAN HAPPEN Increases the possibility of an accident or equipment damage. HOW TO AVOID THE HAZARD Always inspect your ATV each time you use it to make sure the ATV is in safe op- erating conditi[...]

5-3 EBU12520 Front and rear brakes Brake levers and brake pedal Check for correct free play in the front brake lever. If the free play is incorrect, have a Yamaha dealer adjust it. Check for correct free play in the rear brake lever and brake pedal. If the free play is incor- rect, adjust it. (See pages 8-23 – 8-26.) Check operation of the levers[...]

5-4 WA R N I N G POTENTIAL HAZARD Riding with improperly operating brakes. WHAT CAN HAPPEN You could lose braking ability, which could lead to an accident. HOW TO AVOID THE HAZARD Always check the brakes at the start of every ride. Do not ride the ATV if you find any problem with the brakes. If a problem cannot be corrected by the ad- justment proc[...]

5-5 EBU01085 Fuel Make sure there is sufficient gasoline in the tank. CAUTION: _ Use only unleaded gasoline. The use of leaded gasoline will cause severe damage to internal engine parts, such as the valves and piston rings, as well as to the exhaust system. _ Your Yamaha engine has been designed to use regular unleaded gasoline with a pump octane n[...]

5-6 Gasohol There are two types of gasohol; gasohol con- taining ethanol and that containing methanol. Gasohol containing ethanol can be used if ethanol content does not exceed 10%. Gaso- hol containing methanol is not recommended by Yamaha because it may cause fuel system damage or vehicle performance problems. 1. Fuel tank filler tube 2. Fuel lev[...]

5-7 EBU10842 Engine oil Make sure the engine oil is at the specified level. Add oil as necessary. (See page 8-5.) CAUTION: _ ● In order to prevent clutch slippage (since the engine oil also lubricates the clutch), do not mix any chemical additives. Do not use oils with a diesel specification of “ CD ” or oils of a high- er quality than specif[...]

5-8 EBU11620 Fittings and fasteners Always check the tightness of chassis fittings and fasteners before a ride. Take the machine to a Yamaha dealer or refer to the Service Manual for correct tightening torque. EBU10030 Lights Check the headlights and tail/brake light to make sure they are in working condition. Re- pair as necessary for proper opera[...]

5-9 EBU00157 Tires WA R N I N G POTENTIAL HAZARD Operating this ATV with improper tires, or with improper or uneven tire p ressure. WHAT CAN HAPPEN Use of improper tire s on this ATV, or op- eration of this ATV with improper or un- even tire pressure, ma y cause loss of control, increasi ng your risk of accident. HOW TO AVOID THE HAZARD 1. The tire[...]

5-10 4. Use no more than the following pressures when seating the tire beads. Front 250 kPa (2.5 kgf/cm 2 , 36 psi) Rear 250 kPa (2.5 kgf/cm 2 , 36 psi) Higher pressures may cause the tire to burst. Inflate the tires very slowly and carefully. Fast inflation could cause the tire to burst. U4XE16.book Page 10 Monday , March 24, 2003 3:14 PM[...]

5-11 EBU00159 How to measure tire pressure Use the low-pressure tire gauge. N O TE: The low-pressure tire gauge is included as standard equipment. Make two measure- ments of the tire pressure and use th e second reading. Dust or dirt in the gauge could cause the first reading to be incorrect. Set pressure with tires cold. Set tire pressures to the [...]

5-12 EBU00160 Tire wear limit When the tire groove decreases to 3 mm (0.12 in) due to wear, replace the tire. a. Tire wear limit U4XE16.book Page 12 Monday , March 24, 2003 3:14 PM[...]

6-1 EBU00161 OPERATION W ARNING Indicates a potential hazard that could result in serious injury or death. EBU00500 Starting a cold engine 1. Set the parking brake. 2. Turn the fuel cock to “ ON ” . 3. Turn the main switch to “ ON ” and the en- gine stop switch to “ RUN ” . 4. Shift the transmission into neutral. WA R N I N G POTENTIAL [...]

6-2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 NO TE: _ ● When the transmission is in neutral, the neutral indicator light should come on. If the light does not come on, ask a Yamaha dealer to inspect it. ● The engine can be started in any gear if the rear brake lever is applied. However, it is recommended to shift into neutral be- fore starting the engi[...]

6-3 NO TE: _ ● If the engine fails to start, release the start switch, then push the start switch again. Pause a few seconds before the next attempt. Each cranking should be as short as possible to preserve battery en- ergy. Do not crank the engine more than 10 seconds on each attempt. ● If the battery is discharged, pull the recoil starter to [...]

6-4 EBU00185 Drive select lever operation and reverse driving CAUTION: Before shifting, stop the machine and re- turn the throttle lever to its closed posi- tion. Otherwise the transmission may be damaged. N O TE: When shifting into reverse, the transmission must be in first gear. 1. Bring the machine to a complete stop and return the throttle leve[...]

6-5 EBU02000 Shifting This model has a 5-speed forward transmis- sion with centrifugal automatic clutch. The transmission allows you to control the amount of power you have available at a given speed or for starting accelerating, climbing, etc. To shift into neutral, return the throttle lever to its original position and repeatedly depress the shif[...]

6-6 CAUTION: _ Do not coast for long periods with the en- gine off, and do not tow the machine a long distance. Even with gears in neutral, the transmission is only properly lubricat- ed when the engine is running. Inadequate lubrication may damage the transmission. _ EBU00205 To start out and accelerate: 1. Release the throttle lever. CAUTION: Alw[...]

6-7 EBU00207 To decelerate: When slowing down or stopping, release the throttle and apply the brakes smoothly and evenly. As you slow down, shift to a lower gear. Be sure that the engine has sufficiently slowed before engaging a lower gear. Improp- er use of the brakes or shifting can cause the tires to lose traction, reducing control and in- creas[...]

6-8 If any abnormality is noticed during this peri- od, consult a Yamaha dealer. 1. 0 – 10 hours: Avoid continuous operation above half throttle. Allow a cooling off period of five to ten minutes after every hour of opera- tion. Vary the speed of the machine from time to time. Do not operate it at one set throttle position. 2. 10 – 20 hours: Av[...]

6-9 EBU12960 Parking on a slope 1. Bring the ATV to a stop by applying the brakes in low gear. 2. Stop the engine. 3. With the rear brake lever and pedal ap- plied, apply the parking brake and slowly release the brake pedal. WA R N I N G POTENTIAL HAZARD Parking on a hill or other incline. WHAT CAN HAPPEN The ATV could roll out of control, in- crea[...]

6-10 EBU00221 Accessories and loading EBU00222 Accessories Accessories can affect the handling and con- trol of your ATV. Keep the following in mind when considering an accessory or operating an ATV which has accessories. ● Choose only accessories designed for your ATV. Your Yamaha dealer has a variety of genuine Yamaha accessories. Other ac- ces[...]

6-11 EBU00588 Loading Cargo or a trailer can change the stability and handling of an ATV. You must use common sense and good judg- ment when carrying cargo or towing a trailer. Keep the following points in mind: ● Never exceed the weight limits shown. An overloaded ATV can be unstable. ● Do not exceed the maximum tongue weight. You can measure [...]

6-12 ● Ride more slowly than you would without a load. The more weight you carry, the slow- er you should go. Although conditions vary, it is good practice not to exceed 2nd gear whenever you are carrying heavier loads or when towing a trailer. ● Allow more braking distance. A heavier ve- hicle takes longer to stop. ● Avoid making sharp turns[...]

6-13 EBU13440 W ARNING _ Indicates a potential hazard that could result in serious injury or death. U4XE16.book Page 13 Monday , March 24, 2003 3:14 PM[...]

7-1 7 1- Riding Your ATV U4XE16.book Page 1 Monday, March 24, 2003 3:14 PM[...]

7-2 U4XE16.book Page 2 Monday, March 24, 2003 3:14 PM[...]

7-3 W ARNING _ Indicates a potential hazard that could result in serious injury or death. GETTING TO KNOW YOUR ATV This ATV is mainly for utility use, but may also be used for recreation. This section, Riding your ATV, provides general ATV riding in- structions for recreational riding. The skills and techniques described in this section, however, a[...]

7-4 RIDE WITH CARE AND GOOD JUDGEMENT Get training if you are inexperienced. Beginners should get training from a certified instructor. Become familiar with this ATV at slow speeds first, even if you are an experienced operator. Do not attempt to operate at maximum perfor- mance until you are totally familiar with the ATV ’ s handling and perform[...]

7-5 Not recommended for children under 16 years of age. WA R N I N G POTENTIAL HAZARD Failure to follow the age recommenda- tions for this ATV. WHAT CAN HAPPEN Use by children of ATVs that are not rec- ommended for their age can lead to se- vere injury or death of the child. HOW TO AVOID THE HAZARD A child under 16 should never operate an ATV with [...]

7-6 This ATV is designed to carry operator and cargo only - passengers prohibited. WA R N I N G POTENTIAL HAZARD Carrying a passenger on this ATV. WHAT CAN HAPPEN Greatly reduces your ability to balance and control this ATV. Could cause an accident, resulting in harm to you and/ or your passenger. HOW TO AVOID THE HAZARD Never carry a passenger. Th[...]

7-7 Apparel WA R N I N G POTENTIAL HAZARD Operating this ATV without wearing an approved motorcycle helmet, eye pro- tection and protective clothing. WHAT CAN HAPPEN Operating without an approved motor- cycle helmet in- creases your chances of a severe head injury or death in the event of an accident. Operating without eye protection can re- sult i[...]

7-8 Do not operate after consuming alcohol or drugs. Operator ’ s performance capability is reduced by the influence of alcohol or drugs. WA R N I N G POTENTIAL HAZARD Operating this ATV after consuming al- cohol or drugs. WHAT CAN HAPPEN Could seriously affect your judgment. Could cause you to react more slowly. Could affect your balance and per[...]

7-9 Pre-operation checks Always perform the pre-operation checks list- ed on page 5-1 before riding for safety and proper care of the ATV. WA R N I N G POTENTIAL HAZARD Failure to inspect the ATV before oper- ating. Failure to properly maintain the ATV. WHAT CAN HAPPEN Increases the possibility of an accident or equipment damage. HOW TO AVOID THE H[...]

7-10 W ARNING _ Indicates a potential hazard that could result in serious injury or death. Do not operate at speeds too fast for your skills or the conditions. Speed limiter For riders inexperienced with this model, this model is equipped with a speed limiter in the throttle lever housing. The speed limiter limits the power and top speed of the ATV[...]

7-11 Loading and accessories Use extra caution when riding the ATV with additional loads, such as accessories or car- go. The ATV ’ s handling may be adversely af- fected. Reduce your speed when adding additional loads. MAXIMUM LOADING LIMIT ● Vehicle loading limit (total weight of cargo, rider and accessories, and tongue weight): 165 kg (364 l[...]

7-12 During operation Always keep your feet on the footboards dur- ing operation. Otherwise your feet may con- tact the rear wheels. WA R N I N G POTENTIAL HAZARD Removing hands from handlebars or feet from footboards during operation. WHAT CAN HAPPEN Removing even one hand or foot can re- duce your ability to control the ATV or could cause you to [...]

7-13 Avoid wheelies and jumping. You may lose control of the ATV or overturn. WA R N I N G POTENTIAL HAZARD Attempting wheelies, jumps, and other stunts. WHAT CAN HAPPEN Increases the chance of an accident, in- cluding an overturn. HOW TO AVOID THE HAZARD Never attempt stunts, such as wheelies or jumps. Don ’ t try to show off. U4XE16.book Page 1[...]

7-14 Modifications WA R N I N G POTENTIAL HAZARD Operating this ATV with improper modi- fications. WHAT CAN HAPPEN Improper installation of accessories or modification of this vehicle may cause changes in handling which in some situ- ations could lead to an accident. HOW TO AVOID THE HAZARD Never modify this ATV through improp- er installation or u[...]

7-15 Exhaust system The exhaust system on the ATV is very hot during and following operation. To prevent burns, avoid touching the exhaust system. Park the ATV in a place where pedestrians or children are not likely to touch it. WA R N I N G POTENTIAL HAZARD Hot exhaust system. WHAT CAN HAPPEN Dry grass or brush or other combustible material accumu[...]

7-16 BE CAREFUL WHERE YOU RID E This ATV is designed for off-road use only. Riding on paved surfaces can cause loss of control. WA R N I N G POTENTIAL HAZARD Operating this ATV on paved surfaces. WHAT CAN HAPPEN ATVs are designed for off-road use only. Paved surfaces may seriously affect handling and control of the AT V, and may cause the vehicle t[...]

7-17 Do not ride on any public road, street, or high- way. Riding on public roads can result in collisions with other vehicles. WA R N I N G POTENTIAL HAZARD Operating this ATV on public streets, roads or highways. WHAT CAN HAPPEN You can collide with another vehicle. HOW TO AVOID THE HAZARD Never operate this ATV on any public street, road or high[...]

7-18 Know the terrain where you ride. Ride cau- tiously in unfamiliar areas. Stay alert for holes, rocks, or roots in the terrain, and oth- er hidden hazards which may cause the ATV to upset. WA R N I N G POTENTIAL HAZARD Failure to use extra care when operating this ATV on unfamiliar terrain. WHAT CAN HAPPEN You can come upon hidden rocks, bumps, [...]

7-19 WA R N I N G POTENTIAL HAZARD Failure to use extra care when operating on excessively rough, slippery or loose terrain. WHAT CAN HAPPEN Could cause loss of traction or vehicle control, which could result in an acci- dent, including an overturn. HOW TO AVOID THE HAZARD Do not operate on excessively rough, slippery or loose terrain until you hav[...]

7-20 When riding in an area where you might not easily be seen, such as desert terrain, mount a caution flag on the ATV. DO NOT use the flag pole bracket as a trailer hitch. Do not ride in areas posted “ no trespassing ” . Do not ride on private property without getting permission. WA R N I N G POTENTIAL HAZARD Operating in areas where you migh[...]

7-21 Select a large, flat area off-road to become fa- miliar with your ATV. Make sure that this area is free of obstacles and other riders. You should practice control of the throttle, brakes, shifting procedures, and turning techniques in this area before trying more difficult terrain. Al- ways avoid riding on paved surfaces: the ATV is designed f[...]

7-22 CAUTION: _ Do not shift gears without releasing the throttle. Damage to the engine or drive train may occur. _ When slowing down or stopping, release the throttle and apply the brakes smoothly and evenly. As you slow down, shift to a lower gear. Be sure that the engine has sufficiently slowed before engaging a lower gear. Improp- er use of the[...]

7-23 TURNING YOUR ATV To achieve maximum traction while riding off- road, the two rear wheels are mounted solidly on one axle and turn together at the same speed. Therefore, unless the wheel on the in- side of the turn is allowed to slip or lose some traction, the ATV will resist turning. A special turning technique must be used to allow the ATV to[...]

7-24 This procedure should be practiced at slow speed many times in a large off-road area with no obstacles. If an incorrect technique is used, your ATV may continue to go straight. If the ATV doesn ’ t turn, come to a stop and then practice the procedure again. If the riding sur- face is slippery or loose, it may help to posi- tion more of your [...]

7-25 CLIMBING UPHILL Use proper riding techniques to avoid vehicle overturns on hills. Be sure that you can ma- neuver your ATV well on flat ground before at- tempting any incline and then practice riding first on gentle slopes. Try more difficult climbs only after you have developed your skill. In all cases avoid inclines with slippery or loose su[...]

7-26 WA R N I N G POTENTIAL HAZARD Climbing hills improperly. WHAT CAN HAPPEN Could cause loss of control or cause the ATV to overturn. HOW TO AVOID THE HAZARD Always follow proper procedures for climbing hills as described in this Own- er ’ s Manual. Always check the terrain carefully be- fore you start up any hill. Never climb hills with excess[...]

7-27 If you are climbing a hill and you find that you have not properly judged your ability to make it to the top, you should turn the ATV around while you still have forward motion (provided you have the room to do so) and go down the hill. WA R N I N G POTENTIAL HAZARD Improperly crossing hills or turning on hills. WHAT CAN HAPPEN Could cause los[...]

7-28 If your ATV has stalled or stopped and you believe you can continue up the hill, restart carefully to make sure you do not lift the front wheels which could cause you to lose control. If you are unable to continue up the hill, dis- mount the ATV on the uphill side. Physically turn the ATV around and then descend the hill. If you start to roll [...]

7-29 Dismount on uphill si de or to a side if pointed straight uphill. Turn the ATV around and remount, following the pro- cedure described in the Owner ’ s Manu- al. U4XE16.book Page 29 Monday , March 24, 2003 3:14 PM[...]

7-30 RIDING DOWNHILL When riding your ATV downhill, shift your weight as far to the rear and uphill side of the ATV as possible. Move back on the seat and sit with your arms straight. Choose a low gear which will allow the engine compression to do most of the braking for you. Improper braking may cause a loss of traction. Use caution while descendi[...]

7-31 U4XE16.book Page 31 Monday , March 24, 2003 3:14 PM[...]

7-32 CROSSING A SLOPE Traversing a sloping surface on your ATV re- quires you to properly position your weight to maintain proper balance. Be sure that you have learned the basic riding skills on flat ground before attempting to cross a sloping surface. Avoid slopes with slippery surfaces or rough terrain that may upset your balance. As you travel [...]

7-33 When crossing the side of a hill: Always follow proper procedures as de- scribed in the Owner ’ s Manual. Avoid hills with excessively slippery or loose surfaces. Shift your weight to the uphill side of the ATV. U4XE16.book Page 33 Monday , March 24, 2003 3:14 PM[...]

7-34 CROSSING THROUGH SHALLOW WATER The ATV can be used to cross slow moving, shallow water of up to a maximum of 35 cm (14 in) in depth. Before entering the water, choose your path carefully. Enter where there is no sharp drop off, and avoid rocks or other obstacles which may be slippery or upset the ATV. Drive slowly and carefully. WA R N I N G P[...]

7-35 Test your brakes after leaving the water. Do not continue to ride your ATV without verifying that you have regained proper braking ability. CAUTION: _ After riding your ATV in water, be sure to drain the trapped water by removing the check hose at the bottom of the air filter case. Wash the ATV in fresh water if it has been operated in salt wa[...]

7-36 RIDING OVER ROUGH TERRAIN Riding over rough terrain should be done with caution. Look out for obstacles which could cause damage to the ATV or could lead to an upset or accident. Be sure to keep your feet firmly mounted on the footboards at all times. Avoid jumping the ATV as loss of control and damage to the ATV may result. WA R N I N G POTEN[...]

7-37 SLIDING AND SKIDDING Care should be used when riding on loose or slippery surfaces since the ATV may slide. If unexpected and uncorrected, sliding could lead to an accident. To reduce the tendency for the front wheels to slide in loose or slippery conditions, position- ing your weight over the front wheels will sometimes help. If the rear whee[...]

7-38 With practice, over a period of time, skill at controlled sliding can be developed. The ter- rain should be chosen carefully before at- tempting such maneuvers, since both stability and control are reduced. Bear in mind that sliding maneuvers should always be avoided on extremely slippery surfaces such as ice, since all control may be lost. WA[...]

7-39 WHAT TO DO IF ... This section is designed to be a reference guide only. Be sure to read each section on riding techniques completely. WHAT TO DO ... ● If your ATV doesn ’ t turn when you want it to: Bring the ATV to a stop and practice the turning maneuvers again. Be sure you are putting your weight on the footboard to the outside of the [...]

7-40 ● If your ATV is traversing a sloping surface: Be sure to ride with your weight positioned towards the uphill side of the ATV to main- tain proper balance. If the ATV starts to tip, steer down the hill (if there are no obstacles in your way) to regain balance. If you dis- cover that the ATV is going to tip over, dis- mount on the uphill side[...]

8-1 EBU00515 1 - PERIODIC MAINTENANCE AND ADJUSTMENT Periodic inspection, adjustment and lubrica- tion will keep your machine in the sa fest and most efficient condition possible. Safety is an obligation of the machine owner. The most important points of machine inspection, ad- justment and lubrication are explained on the following pages. EBU00535[...]

8-2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1. Owner ’ s tool kit 2. Low-pressure tire gauge The service information included in this man- ual is intended to provide you, the owner, with the necessary information for completing your own preventive maintenance and minor re- pairs. The tools provided in the Owner ’ s tool kit are sufficient for this pur[...]

8-3 EBU00261 PERIODIC MAINTENANCE/LUBRICATION ITEM ROUTINE INITIAL EVERY 1 month 3 months 6 months 6 months 1 year Valves* • Check valve clearance. • Adjust if ne cessary. Spark plug • Check condition. • Adjust gap and clean. • Replace if necessary. Air filter elemen t • Clean. • Replace if necessary. Every 20 – 40 hours (more often[...]

8-4 * It is recommended that these items be serviced by a Yamah a dealer. Wheels* • Check balance/damage/ru nout. • Repair if necessary. Wheel bearings* • Check bearing assemblies for looseness/ damage. • Replace if damaged. Front and rear suspen sion* • Check operation. • Correct if necessary. Steering system* • Check operation. • [...]

8-5 EBU11002 Engine oil Engine oil level measurement 1. Place the machine on a level surface. 2. Warm up the engine for several minutes and stop it. Wait at least ten minutes for the oil to drain back into the crankcase before checking the oil level. NO TE: _ Be sure to wait at least ten minutes until the oil level settles before checking. _ 3. Rem[...]

8-6 Engine oil replacement and oil filter ele- ment cleaning 1. Place the machine on a level surface. 2. Warm up the engine for several minutes and stop it. 3. Place a container under the engine to collect the used oil. 4. Remove the engine oil filler cap and then the drain bolt to drain the oil. CAUTION: _ When removing the drain bolt, the com- pr[...]

8-7 5. Remove the oil filter cover and oil filter el- ement. 1. Oil filter cover 2. Engine oil filter element 3. O-ring 6. Clean the oil strainer and oil filter element with solvent. 7. Inspect the O-ring and replace it if dam- aged. 8. Install the oil filter element, O-ring and oil filter cover. 9. Install the oil strainer, compression spring, O-r[...]

8-8 11. Fill the engine with oil and install the en- gine oil filler cap. CAUTION: _ Be sure no foreign material enters the crankcase. _ 12. Warm up the engine for several minutes at idle speed. Check for oil leakage while warming up. CAUTION: _ If oil leakage is found, stop the engine im- mediately and check for the cause. _ Recommended engine oil[...]

8-9 EBU11450 Final gear oil Final gear oil measurement 1. Place the machine on a level surface. 2. Remove the oil filler bolt, and then check the oil level in the final gear case. NO TE: _ The oil level should be at the brim of the filler hole. _ 3. If the oil is below the brim of the filler hole, add sufficient oil of the recommended type to raise[...]

8-10 Final gear oil replacement 1. Remove the final gear case cover by re- moving the bolts. 1. Final gear case cover 2. Bolt ( × 3) 2. Place the machine on a level surface. 3. Place a container under the final gear case to collect the used oil. 4. Remove the oil filler bolt and the drain bolt to drain the oil. 1. Final gear oil drain bolt 5. Inst[...]

8-11 6. Add the recommended final gear oil to the brim of the filler hole. CAUTION: _ Be sure no foreign material enters the final gear case. _ 7. Install the oil filler bolt. 8. Check for oil leakage. If oil leakage is found, check for the cause. 9. Install the final gear case cover bolts, and then tighten them to the specified torque. EBU11820 Sp[...]

8-12 Before installing the spark plug, measure the electrode gap with a wire thickness gauge and adjust it to specification. a. Spark plug gap When installing the spark plug, always clean the gasket surface and its mating surface. Wipe off any grime from the threads and tight- en it to the specified torque. Spark plug gap: 0.6 – 0.7 mm (0.024 –[...]

8-13 EBU13010 Air filter element cleaning NO TE: _ There is a check hose at the bottom of the air filter case. If dust or water collects in this hose, empty the hose and clean the air filter element and air filter case. _ 1. Air filter case check hose 1. Remove the seat. (See page 4-14 for seat removal and installation proce- dures.) 2. Remove the [...]

8-14 3. Pull the air filter element out. 4. Remove the foam cover from the air filter element. 1. Air filter element 1. Air filter element 2. Foam cover U4XE16.book Page 14 Monday , March 24, 2003 3:14 PM[...]

8-15 5. Tap the element lightly to remove most of the dust and dirt. Blow out the remaining dirt with compressed air as shown. If the air filter element is damaged, replace it. 6. Wash the foam cover gently but thor- oughly in water or solvent. 7. Squeeze the excess water or solvent out of the foam cover and let it dry. CAUTION: _ ● Do not twist [...]

8-16 10. Install the air filter element. 11. Install the air filter case cover by fasten- ing the holders. 12. Install the seat. NO TE: _ The air filter element should be cleaned every 20 – 40 hours. It should be cleaned more often if the ATV is operated in extremely dusty ar- eas. Each time air filter element maintenance is performed, check th e[...]

8-17 EBU13620 Spark arrester cleaning Select a well-ventilated area free of combusti- ble materials and make sure the exhaust pipe and muffler are cool. 1. Remove the purging bolt. 1. Purging bolt 2. Start the engine and rev it up approxi- mately twenty times while momentarily creating exhaust system back pressure by blocking the end of the muffler[...]

8-18 EBU0029 6 Carburetor adjustment The carburetor is a vital part of the engine and requires very sophisticated adjustment. Most adjusting should be left to a Yamaha dealer who has the professional knowledge and ex- perience to do so. However, the idling speed may be performed by the owner as a part of the usual maintenance routine. CAUTION: The [...]

8-19 EBU13020 Idle speed adjustment NO TE: _ A diagnostic tachometer must be used for this procedure. _ 1. Start the engine and warm it up for a few minutes at approximately 1,000 to 2,000 r/min. Occasionally rev the engine to 4,000 to 5,000 r/min. The engine is warm when it quickly responds to the throttle. 2. Connect the tachometer to the spark p[...]

8-20 EBU00307 Throttle lever adjustment N O TE: Adjust the engine idling speed before adjust- ing the throttle lever free play. 1. Loosen the locknut. 2. Turn the adjusting bolt until the throttle le- ver free play is 3 – 5 mm (0.12 – 0.20 in). 3. Tighten the locknut. 1. Locknut 2. Adjusting bolt a. Throttle lever free play EBU1309 0 Front brak[...]

8-21 EBU00313 Rear brake shoe inspection A wear indicator is provided on the rear brake. This indicator allows checking of brake shoe wear without disassembling the brake. Apply the rear brake and check the position of the in- dicator. If the indicator reaches the wear limit line, ask a Yamaha dealer to replace shoes as a set. 1. Wear indicator 2. [...]

8-22 1. Minimum level mark ● Refill with the same type of brake fluid. Mix- ing fluids may result in a harmful chemical reaction and lead to poor brake perfor- mance. ● Be careful that water does not enter the brake fluid reservoir when refilling. Water will significantly lower the boiling point of the fluid and may result in vapor lock. ● Br[...]

8-23 EBU11870 Front brake lever free play The front brake lever should have a free play of zero mm (zero in) at the lever end. If not, have a Yamaha dealer check the brake sys- tem. a. Front brake lever free play WA R N I N G POTENTIAL HAZARD Operating with improperly serviced or adjusted brakes. WHAT CAN HAPPEN You could lose braking ability, whic[...]

8-24 EBU01075 Rear brake adjustment Brake pedal 1. Fully loosen the adjusting nut on the brake cable. 1. Adjusting nu t (brake cable) 2. Adjusting nut (brake rod) 2. Turn the adjusting nut on the brake rod until free play is 20 – 30 mm (0.8 – 1.2 in). a. Rear brake pedal free play U4XE16.book Page 24 Monday , March 24, 2003 3:14 PM[...]

8-25 Brake lever 1. Loosen the locknut and fully turn in the adjusting bolt on the handlebar. 1. Locknut 2. Adjusting bolt 2. Turn the adjusting nut on the brake cable to provide a gap of 0 – 1 mm (0 – 0.04 in) between the cam shaft lever and pin. 1. Adjusting nut (brake cable) 2. Lever 3. Pin a. Gap U4XE16.book Page 25 Monday , March 24, 2003 [...]

8-26 3. Turn the adjusting bolt until free play reaches 5 – 7 mm (0.2 – 0.3 in) at the lever pivot. 1. Locknut 2. Adjusting bolt a. Rear brake lever free play 4. Tighten the locknut. WA R N I N G POTENTIAL HAZARD Operating with improperly serviced or adjusted brakes. WHAT CAN HAPPEN You could lose braking ability, which could lead to an acciden[...]

8-27 EBU00834 Adjusting the rear brake light switch The rear brake light switch, which is activated by the brake pedal and brake levers, is prop- erly adjusted when the brake light comes on just before braking takes effect. If necessary, adjust the brake light switch as follows. 1. Rear brake light switch 2. Adjusting nut Turn the adjusting nut whi[...]

8-28 N O TE: Turn the adjusting bolt counterclockwise to decrease the clutch free play and turn it clock- wise to increase the free play. EBU00356 Cable inspection and lubrication Lubricate the inner cables and the cable ends. If the cables do not operate smoothly, ask a Yamaha dealer to replace them. WA R N I N G POTENTIAL HAZARD Damaged control c[...]

8-29 EBU00717 Brake lever and brake pedal lubrication Lubricate the pivoting parts. Recommended lubricant: Lithium-soap-based grease (all-purpose grease) U4XE16.book Page 29 Monday , March 24, 2003 3:14 PM[...]

8-30 EBU14060 Steering shaft lubrication Lubricate the pivot point with a grease gun. 1. Grease nipple EBU0111 2 Wheel removal 1. Loosen the wheel nuts. 2. Elevate the ATV and place a suitable stand under the frame. 3. Remove the nuts from the wheel. 4. Remove the wheel. Recommended lubricant: Lithium-soap-based grease (all purpose grease) U4XE16.b[...]

8-31 EBU01121 Wheel installation 1. Install the wheel and the nuts. NO TE: _ ● Tapered nuts are used for both the front and rear wheels. Install the nut with its ta- pered side towards the wheel. ● The arrow mark on the tire must point toward the rotating direction of the wheel. _ 1. Arrow mark 1. Tapered nut 2. Lower the ATV so that the wheel [...]

8-32 EBU00378 Battery Check the level of the battery fluid and see if the terminals are tight. Add distilled water if the fluid level is low. CAUTION: Do not leave or store the battery on its side. When inspecting the battery, be sure the breather hose is routed correctly. If it touches the frame or exists in such a way as to cause battery electrol[...]

8-33 WA R N I N G POTENTIAL HAZARD Failure to handle batteries or battery electrolyte carefully. WHAT CAN HAPPEN You could be poisoned. You could be severely burned by the sulfuric acid in battery electrolyte. Batteries produce explosive gases. HOW TO AVOID THE HAZARD Avoid contact with skin, eyes or cloth- ing. Always shield eyes when working near[...]

8-34 EBU00542 Replenishing the battery fluid A poorly maintained battery will corrode and discharge quickly. The battery fluid should be checked at least once a month. 1. The level should be between the upper and lower level marks. Use only distilled water if refilling is necessary. 1. Maximum level ma rk 2. Minimum level mark 3. Bolt ( × 2) 4. Ba[...]

8-35 EBU00390 Fuse replacement 1. The fuse case is located under the seat. 2. If the fuse is blown, turn off the main switch and install a new fuse of the spec- ified amperage. Then turn on the switch- es. If the fuse immediately blows again, consult a Yamaha dealer. 1. Fuse 2. Spare fuse CAUTION: To prevent accidental short-circuiting, turn off th[...]

8-36 EBU10721 Replacing a headlight bulb If a headlight bulb burns out, replace the bulb as follows. 1. Remove the headlight cover by removing the screws. 1. Headlight cover 2. Screw ( × 3) 2. Remove the bulb holder cover. 1. Bulb holder cover ( × 2) 3. Turn the bulb holder counterclockwise to remove the defective bulb. 1. Bulb holder U4XE16.book[...]

8-37 4. Put a new bulb into position and secure it in place with the bulb holder. 5. Install the bulb holder cover and head- light cover. 6. Install the headlight cover by installing the screws. 7. Adjust the headlight beam if necessary. EBU01089 Headlight beam adjustment CAUTION: _ It is advisable to have a Yamaha dealer make this adjustment. _ To[...]

8-38 EBU09451 Tail/brake light bulb replacement 1. Open the storage box. (See page 4-15.) 2. Remove the nuts together with the wash- ers. 1. Storage box 2. Nut ( × 2) 3. Remove the bulb holder (together with the bulb) by turning it counterclockwise. 1. Bulb holder 4. Remove the defective bulb from the bulb holder by pushing it inward and turning i[...]

8-39 1. Bulb holder 2. Bulb 5. Install a new bulb in the bulb holder by pushing it inward and turning it clockwise. 6. Install the bulb holder (together with the bulb). 7. Install the washers, and then install the nuts. EBU00412 Troubleshooting Although Yamaha machines receive a rigid in- spection before shipment from the factory, trouble may occur[...]

8-40 WA R N I N G POTENTIAL HAZARD Checking the fuel system while smok- ing or near an open flame. WHAT CAN HAPPEN Fuel can ignite or explode, causing se- vere injury or property damage. HOW TO AVOID THE HAZARD Do not smoke when checking the fuel system. Make sure there are no open flames or sparks in the area, including pilot lights from water hea[...]

8-41 EBU00440 Troubleshooting chart 1. Fuel Check if there is fuel in the fuel tank. There is fuel. Turn the fuel cock to “ OFF ” . Remove the fuel hose. No fuel. Fuel cock clogged. Clean fuel cock. Some fuel. Turn the fuel cock to “ RES ” . Restart engine. No fuel. Supply fuel. 2. Compression Use electric starter to see if there is compres[...]

9-1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 EBU00419 CLEANING AND STORAGE A. CLEANING Frequent, thorough cleaning of your machine will not only enhance its appearance but will improve its general performance and extend the useful life of many components. 1. Before cleaning the machine: a. Block off the end of the exhaust pipe to prevent water entry. A pla[...]

9-2 6. Clean the seat with a vinyl upholstery cleaner to keep the cover pliable and glossy. 7. Automotive type wax may be applied to all painted and chrome plated surfaces. Avoid combination cleaner-waxes. Many contain abrasives which may mar the paint or protective finish. When finished, start the engine and let it idle for several minutes. WA R N[...]

9-3 EBU00530 B. STORAGE Long term storage (60 days or more) of your machine will require some preventive proce- dures to guard against deterioration. After thoroughly cleaning the machine, prepare for storage as follows: 1. Fill the fuel tank with fresh fuel and add the specified amount of Yamaha Fuel Stabilizer and Conditioner or an equiva- lent p[...]

9-4 7. Remove the battery and charge it. Store it in a dry place and recharge it once a month. Do not store the battery in an ex- cessively warm or cold place (less than 0 ° C (30 ° F) or more than 30 ° C (90 ° F)). NO TE: _ Make any necessary repairs before storing the machine. _ U4XE16.book Page 4 Monday, March 24, 2003 3:14 PM[...]

10-1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 EBU00428 1- SPECIFICATIONS MODEL YFM250X Dimension: Overall length Overall width Overall height Seat height Wheel base Minimum ground cle arance Minimum turning radiu s 1,940 mm ( 7 6.4 in) 1,005 mm ( 3 9.6 in) 1,118 mm ( 4 4.0 in) 780 mm ( 3 0.7 in) 1,170 mm ( 4 6.1 in) 150 mm ( 5 .91 in) 2,900 mm (114.2 in) B[...]

10-2 Engine oil: Type Recommended engine oil classification : API Service SE, SF, SG type or higher Quantity: Without oil filter element removal With oil filter element removal 1.5 L (1.3 Imp qt, 1.6 US qt) 1.6 L (1.4 Imp qt, 1.7 US qt) MODEL YFM250X 0˚ 10˚ 30˚ 50˚ 70˚ 90˚ 110˚ 130˚F YAMALUBE 4 (10W30) or SAE 10W30 SAE 5W30 -20˚ -10˚ 0˚ [...]

10-3 Final gear case oil: Type Quantity: Periodic oil change SAE 80 API “ GL-4 ” Hypoid gear oil 0.25 L (0.22 Imp qt, 0.26 US qt) Air filter: Dry element Fuel: Type Tank capacity Reserve amount UNLEADED GASOLINE ONLY 12 L (2.64 Imp gal, 3.17 US gal) 1.6 L (0.35 Imp gal, 0.42 US gal) Carburetor: Type × quantity Manufactur er BST34 × 1 MIKUNI S[...]

10-4 Gear ratio: 1st 2nd 3rd 4th 5th Reverse 34/12 (2.833) 34/19 (1.789) 29/22 (1.318) 26/25 (1.040) 23/28 (0.821) 73/22 × 34/12 × 19/18 (9.9 24) Chassis: Frame type Caster angle Trail Steel tube 4 ° 20 mm (0.79 in) Tire: Type Size: Front Size: Rear Tubeless AT22 × 7-10 AT22 × 10-10 Brake: Front brake type Operatio n Rear brake type Operatio n[...]

10-5 Wheel travel: Front Rear 125 mm (4.9 in) 135 mm (5.3 in) Electrical: Ignition system Generator system Battery type/voltage, capacity DC. C.D.I. A.C. magneto YB14A-A2/12V, 14Ah Headlight type: Incandescence Bulb voltage, wattage × quantity: Headlight Tail/brake light Indicator light: Neutral Reverse 12V, 25/25W × 2 12V, 5/21W × 1 12V, 1.7W ?[...]

11-1 EBU00430 NOISE REGULATION TAMPERING WITH NOISE CONTROL SYS TEM PROHIBITED: Federal law prohibits the following acts or the causing thereof: (1) The removal or rendering inop- erative by any person other than for purposes of maintenance, repair, or replacement of any de- vice or element of design incorporated into any new vehicle for the purpos[...]

12-1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 EBU13651 1 - MAINTENANCE RECORD Copies of work orders and/or receipts for parts you purchase and insta ll will be required to docu- ment maintenance done in accordance with the warranty. The chart below is printed only as a re- minder to you that the maintenance work is required. It is not acceptable proof of m[...]

13-1 EBU00432 1- YAMAHA MOTOR COR PORATION, U.S.A . ATV LIMITED WARRANTY U4XE16.book Page 1 Monday, March 24, 2003 3:14 PM[...]

13-2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 U4XE16.book Page 2 Monday, March 24, 2003 3:14 PM[...]

14-1 EBU00435 1 - YAMAHA EXTENDE D SERVICE (Y.E.S.) U4XE16.book Page 1 Monday, March 24, 2003 3:14 PM[...]

14-2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 U4XE16.book Page 2 Monday, March 24, 2003 3:14 PM[...]

EBU00436 W ARNING Indicates a potential hazard that could result in serious injury or death. U4XE16.book Page 3 Monday, March 24, 2003 3:14 PM[...]

EBU00437 U4XE16.book Page 5 Monday, March 24, 2003 3:14 PM[...]

4XE-F8199-16 LIT-11626-17-22 READ THIS MANUAL CAREFULLY! It contains important safety information. This ATV should not be ridden by anyone under 16 years of age. WARNING YFM250XS OWNER’S MANUAL PRINTED IN USA 2003.04-4.0 × 1 CR (E) PRINTED ON RECYCLED PAPER Y AMAHA MO T OR CO . , L TD . EBU00438 LOCATE AND READ OWNER’S MANUAL. FOLLOW ALL INSTR[...]

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