RedMax BT250 manual

OWNER / OPERA T OR MANUAL LINE TRIMMER BT25-00000 (404) The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. W ARNING Before using our products, please read this manual carefully to understand the proper use of your unit. W ARNING DRIVE UNIT 40400101 and [...]

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SAFETY FIRST Instructions contained in warnings within this manual marked with a symbol concern critical points which must be taken into consideration to prevent possible serious bodily injury, and for this reason you are requested to read all such instructions carefully and follow them without fail. ■ WARNINGS IN THE MANUAL This mark indicates i[...]

2. Specifications ■ BT250 Overall size(LxWxH) ······················································ 63.0(1600)x13.0(330)x12.0(305) in(mm) Dry weight w/o acc.····································································[...]

(1) Read owner's manual before operating this machine. (2) Wear head, eye and ear protection. (3) Warning/Attention (4) Keep all children, bystanders and helpers 15 meters away from the brushcutter If warning label peel off or become soiled and impossible to read, you should contact the dealer from which you purchased the product to order new [...]

 6  For safe operation and maintenance, symbols are carved in relief on the machine. According to these indications, please be careful not to make a mistake. (a) The port to refuel the "MIX GASOLINE" Position: FUEL TANK CAP (b) The direction A to close the choke The direction B to open the choke Position: AIR CLEANER COVER 4. Symbol[...]

 7  5. For safe operation 1. Read this manual carefully until you completely understand and follow all safety and operating instructions. 2. Keep this manual handy so that you may refer to it later whenever any questions arise. Also note, if you have any questions which cannot be answered herein, contact the dealer from whom you purchased the[...]

 8  b. At night, at times of heavy fog, or at any other times when your field of vision might be limited and it would be difficult to gain a clear view of the working area. c. During rain storms, during lightning storms, at times of strong or gale-force winds, or at any other times when weather conditions might make it unsafe to use the produ[...]

■ BEFORE STARTING THE ENGINE 1. The area within a perimeter of 50 feet (15m) of the person using the product should be considered a hazardous area into which no one should enter. If necessary yellow warning rope, warning signs should be placed around the perimeter of the area. When work is to be performed simultaneously by two or more persons, ca[...]

 10  Never place the throttle into the high speed position when starting the engine. 3. After starting the engine, check to make sure that the cutting attachment stops rotating when the throttle is moved fully back to its original position. If it continues to rotate even after the throttle has been moved fully back, turn off the engine and ta[...]

• IF SOMEONE COMES 1. Guard against hazardous situations at all times. Warn adults to keep pets and children away from the area. Be careful if you are approached. Injury may result from flying debris. 2. If someone calls out or otherwise interrupts you while working, always be sure to turn off the engine before turning around. ■ MAINTENANCE 1. [...]

 12  5. For safe operation refill the tank of the unit in any place where there is a boiler, stove, wood fire, electrical sparks, welding sparks, or any other source of heat or fire which might ignite the fuel. 2. Never smoke while operating the unit or refilling its fuel tank. 3. When refilling the tank, always turn off the engine and allow [...]

■ INSTALLING HANDLE (SE1) •M ount the handle to the shaft tube and clamp it at your best operating position. ■ INSTALLING DEBRIS GUARD (SE2) • Put the debris guard on the shaft tube near the gear box, attach it with the screw, washer and nut provided. ■ INSTALLING CUTTING HEAD (SE3) 1. While locking the gear shaft by inserting the attache[...]

 14  7. Fuel ■ RECOMMENDED MIXING RATIO GASOLINE 50:OIL 1 • Exhaust emission are controlled by the fundamental engine parameters and components(eq., carburation, ignition timing and port timing) without addition of any major hardware or the introduction of an inert material during combustion. • These engines are certified to operate on [...]

7. Fuel  15  again for at least one minute. As some oils may be difficult to agitate depending on oil ingredients, sufficient agitation is necessary for the engine to last long. Be careful that, if the agitation is insufficient, there is an increased danger of early piston seizing due to abnormally lean mixture. 5. Put a clear indication on t[...]

 16  ■ STARTING ENGINE The cutting head will start rotating upon the engine starts. 1. Rest the unit on a flat, firm place. Keep the cutting head off the ground and clear of surrounding objects as it will start rotating upon starting of the engine. 2. Push the primer pump several times until overflown fuel flows out in the return tube. (OP1[...]

8. Operation ■ STOPPING ENGINE 1. Release the throttle lever and run the engine for a half minute. 2. Shift the ignition switch to the STOP position. • Except for an emergency, avoid stopping the engine while pulling the throttle lever. ■ ADJUSTING IDLING SPEED (OP5) 1. When the engine tends stop frequently at idling mode, turn the adjusting [...]

 18  3. Use a slow, deliberate action to cut heavy growth. The rate of cutting motion will depend on the material being cut. Heavy growth will require slower action than will light growth. 4. Never swing the unit so hard as you are in danger of losing your balance or control of the unit. 5. Try to control the cutting motion with the hip rathe[...]

9. Maintenance Maintenance, replacement, or repair of the emission control device and systems may be performed by any non-road engine repair establishment or individual. •A lways be sure to stop the engine before inspecting the brushcutter for problems or performing maintenance. • Never alter the brushcutter or take the engine apart. •W hen r[...]

 20  9. Maintenance 8 11 14 1 2 9 10 12 13 15 THIS SIDE UP THIS SIDE UP WIND LINE[...]

•M ake sure that the engine has stopped and is cool before performing any service to the brushcutter. Contact with moving cutting head or hot muffler may result in a personal injury. ■ AIR FILTER • The air filter, if clogged, will reduce the engine performance. Monthly check and clean the filter element in warm, soapy water as required. Dry c[...]

 22  ■ MUFFLER •I nspect periodically, the muffler for loose fasteners, any damage or corrosion. If any sign of exhaust leakage is found, do not use the brushcutter and have it repaired immediately. • Note that failing to do so may result in the engine catching on fire. ■ SPARK ARRESTER • The muffler is equipped with a spark arreste[...]

9. Maintenance hours of use for blockage, and remove any waste which has attached itself to the brushcutter. Note that it is necessary to remove the plug guard shown in Figure 20 in order to be able to view the upper part of the cylinder. • If waste gets stuck and causes blockage around the intake air cooling vent or between the cylinder fins, it[...]

 24  11 . T roubleshooting guide Case 1. Starting failure CHECK PROBABLE CAUSES ACTION fuel tank ➞ incorrect fuel ➞ drain it and with correct fuel fuel filter ➞ fuel filter is clogged ➞ clean carburetor adjustment screw ➞ out of normal range ➞ adjust to normal range sparking (no spark) ➞ spark plug is fouled/wet ➞ clean/dry ?[...]

12. Parts list NOTE : 1. Use KOMATSU ZENOAH genuine parts as specified in the parts list for repair and/or replacement. 2. KOMATSU ZENOAH does not warrant the machines, which have been damaged by the use of any parts other than those specified by the company. 3. When placing parts orders for repair and/or replacement, check if the model name and th[...]

12. Parts list  26  Fig.1 DRIVE UNIT BT250 (S/N 40400101 and up)[...]

Fig.1 DRIVE UNIT BT250 (S/N 40400101 and up)  27  Key# Part Number Description Q'ty 1 BT25-50810 PIPE COMP. 1 2 BT25-50710 DRIVE SHAFT 1 3 BT25-50910 HOUSING ASSY 1 4 BT25-50610 GRIP 1 5 BT25-50510 LEVER ASSY 1 6 BT25-50520 SCREW 1 7 1855-82100 CABLE ASSY 1 8 BT25-80100 TUBE 1 9 BT25-50400 HANDLE ASSY 1 10 BT25-50410 • HANDLE 1 11 0263[...]

Fig.2 ENGINE UNIT BT250 (S/N KU40001 and up)  28  12. Parts list[...]

Fig.2 ENGINE UNIT BT250 (S/N KU40001 and up)  29  Key# Part Number Description Q'ty 1 6634401 SCREW 4 2 3075406 FRONT HOUSING 1 3 6635301 SCREW CLUTCH 2 4 6969601 WASHER CURVED 2 5 3075603 CLUTCH ASSY 1 6 6969501 WASHER PLAIN 2 7 6968901 NUT 1 8 6457403 ROTOR 1 9 4309501 CRANKCASE&SHAFT ASSY 1 10 6968501 • BEARING 2 11 5987501 • [...]

EMISSION-RELATED PARTS, FOR TWO (2) YEARS FROM THE DATE OF ORIGINAL DELIVERY OF THE UNIT, KOMATSU ZENOAH AMERICA INC. (THE COMPANY), THROUGH ANY RedMax DEALER, WILL REPAIR OR REPLACE, FREE OF CHARGE, FOR THE ORIGINAL AND EACH SUBSEQUENT PURCHASER, ANY PART OR PARTS FOUND TO BE DEFECTIVE IN MATERIAL AND/OR WORKMANSHIP. EMISSION-RELATED PARTS ARE: TH[...]

Pièces en rapport avec les émissions de gaz d'échappement : KOMATSU ZENOAH AMERICA INC., par l'intermédiaire de n'importe quel revendeur RedMax, réparera gratuitement ou remplacera gratuitement pour l'acheteur initial et chaque acheteur successif toute(s) pièce(s) se révélant de constitution et/ou de montage défectueux [...]