Exmark 4500-450 manual

QUEST ® For Serial Nos. 790,000 & Higher Part No. 4500-450 Rev . A[...]

W ARNING CALIFORNIA Proposition 65 W ar ning The engine exhaust from this product contains chemicals known to the State of Califor nia to cause cancer , birth defects, or other reproductiv e har m. Important: This engine is not equipped with a spark arr ester mufer . It is a violation of Califor nia Public R esource Code Section 4442 to use or o[...]

Introduction R ead this infor mation carefully to learn how to operate and maintain y our product properly and to av oid injury and product damage. Y ou are responsible for operating the product properly and safely . Y ou may contact Exmark directly at www .Exmark.com for product and accessor y infor mation or help nding a dealer . Whenever y ou[...]

Contents Introduction .. . . .. . . .. . . .. . . .. . . .. . . .. . . . .. . . .. . . .. . . .. . . .. . . .. . . .. . . .. 3 Safety .. . . .. . . . .. . . .. . . .. . . .. . . .. . . .. . . .. . . .. . . .. . . .. . . . .. . . .. . . .. . . .. . . .. . 5 Safety Alert Symbol . . .. . . .. . . .. . . .. . . .. . . .. . . .. . . .. . . .. . . .. . 5[...]

Safety Safety Safety Alert Symbol This man ual identies potential hazards and has safety messages identied by the safety alert symbol (Figure 2), which signals a hazard that ma y cause serious injury or death if you do not follo w the recommended precautions . Figure 2 1. Safety alert symbol This manual uses tw o other w ords to highlight inf[...]

Safety safely enough to protect themselves and others from serious injury . • Alwa ys follow the recommendations for wheel weights or counterw eights . Slope Operation Slopes are a major factor related to loss of control and tip-ov er accidents , which can result in sev ere injur y or death. Operation on all slopes requires extra caution. If you [...]

Safety • Extinguish all cigarettes , cigars, pipes and other sources of ignition. • Use only an approv ed container . • Never remo ve the gas cap or add fuel when the engine is r unning . Allo w the engine to cool before refueling . • Never refuel the machine indoors . • Never store the mac hine or fuel container inside where there is an [...]

Safety Safety and Instructional Decals Safety decals and instr uctions are easily visible to the operator and are located near any area of potential danger . R eplace any decal that is damaged or lost. 93-7009 1. W arning–Do Not operate the mower with the discharge deector up or removed; keep the discharge deector in place. 2. Cutting/disme[...]

Safety 109-6035 Deck Drive Belt Routing 109-6036 1. Read the Operator ’ s Manual. 2. Remove the ignition key and read the instructions before servicing or performing maintenance. 3. Height of cut. 109-6210 1. Read the Operator ’ s Manual. 2. Cutting/dismemberment hazard, fan and entanglement hazard, belt–stay away from moving parts. 109-6459 [...]

Safety 1 10-6691 1. Thrown objects hazard–keep bystanders a safe distance from the machine. 3. Cutting/dismemberment of hand or foot–stay away from moving parts. 2. Thrown objects hazard, mower–keep the discharge deector or collection system in place. 1 16-0531 1 16-0532 QST20BE422 Unit 1. Choke–on 2. Throttle–fast 3. Continuous variab[...]

Safety PTO Symbols 1. PTO—Of f 2. PTO—On 109-6016 1. Read the instructions before servicing or performing maintenance. 4. Refer to the Operator ’ s manual for grease instructions. 2. T ime interval 5. Check hydraulic oil level and refer to the Operator’s Manual for further instructions. 3. Check oil level. 6. Check tire pressure. 1 1[...]

Safety 109-8965 1. W arning–read the Operator’s Manual. 5. T ipping hazard–avoid sudden and sharp turns while on slopes, only mow across slopes less than 15 degrees, keep a safe distance from water , and only mow up and down slopes less than 15 degrees. 2. Read the instructions before servicing or performing maintenance; apply parking brake, [...]

Specications Specications Model Numbers Serial Nos: 790,000 and Higher QST20BE422; QST22BE482; QST24BE522 Systems Engine • Engine Specications: See y our Engine Owner’ s Manual • RPM: – 20HP Full Speed: 3300 ±100 (max) RPM (No Load) Idle: 1650 (min) RPM – 22HP & 24HP Full Speed: 3650 ±100 (max) RPM (No Load) Idle: 1650 (min[...]

Specications • Ar mrests: Standard–foam padded ip-up adjustable height ar mrests (optional on the 42 inch unit). • Seat Safety Switch: Incorporated into the Safety Interlock System. Hydrostatic Ground Drive System • Hydrostatic Pumps: T w o Hy dro Gear ZT2800 Integ rated driv e systems . • Hydraulic Oil T ype: Exmark Premium Hydro o[...]

Product Overview Overall Height: All Units 41.8 inches (106 cm) T read Width: (Center to Center of Tires, W idthwise) 42 inch Deck 48 inch Deck 52 inch Deck Driv e Wheels 36.0 inc hes (91 cm) 36.0 inc hes (91 cm) 36.8 inc hes (93 cm) Caster Wheels 27.9 inc hes (71 cm) 33.5 inc hes (85 cm) 33.5 inc hes (85 cm) Wheel Base: (Center of Caster T ire to [...]

Operation Operation Controls Note: Become familiar with all of the controls in Figure 3 and Figure 4 before y ou start the engine and operate the mac hine. Ignition Switch Located on control panel. The ignition switch is used to start and stop the engine. T he switch has three positions “OFF”, “RUN” and “ST ART” ( Figure 4). Insert key [...]

Operation Parking Brake Lever Located on left side of the console (Figure 3). The brak e lev er engages a parking brake on the dri ve wheels . Pull the lev er up and rearward to engag e the brak e . Push the lev er forw ard and down to disengag e the brake . Height-of-Cut Foot Lever The height of cut lever allows the operator to lo wer and raise th[...]

Operation See inside bac k co ver to deter mine the appro ximate slope angle to be mow ed. Recommended Gasoline Use UNLEADED R egular Gasoline suitable for automotiv e use (87 pump octane minimum). Important: Nev er use methanol, gasoline containing methanol, or gasohol containing more than 10% ethanol because the fuel system could be damaged. Do N[...]

Operation Using Stabilizer/Conditioner Use a fuel stabilizer/conditioner in the mac hine to provide the following benets: • Keeps gasoline fresh during storage of 30 da ys or less . F or longer storage it is recommended that the fuel tank be drained. • Cleans the engine while it runs. • Eliminates gum-lik e v arnish buildup in the fuel sys[...]

Operation Figure 7 1. Throttle/Choke lever 5. Run 2. Blade control switch—Off position 6. Start 3. Ignition key 7. Choke 4. Off 8. Throttle–fast (detent position) 3. Mov e the lev er forw ard, beyond the detent, to engag e the chok e before starting a cold engine (Figure 7). Note: A war m or hot engine ma y not require choking . 4. T urn the ig[...]

Operation The Safety Interlock System CAUTION If safety inter lock s witches are disconnected or damaged the machine could operate unexpectedly causing personal injur y . • Do Not tamper with the interlock switches. • Check the operation of the inter lock switches daily and replace an y damaged switches before operating the machine. Understandi[...]

Operation CAUTION Machine can spin v er y rapidly by positioning one lev er too much ahead of the other . Operator may lose control of the machine, which may cause damage to the machine or injur y . • Use caution when making tur ns. • Slow the machine down before making shar p tur ns. Forward 1. Mov e the lev ers to the center , unlock ed posit[...]

Operation Figure 10 1. T ransport release handle 3. Height adjuster pin 2. Height-of-cut positions 4. Foot actuated height-of-cut lever 2. Mov e the dec k height adjuster pin to the desired cut height. 3. Push the foot lev er forw ard, pull the transport release handle up and let the deck low er down to the predeter mined cut height by slowly decre[...]

Operation 1. Tip the seat forw ard. 2. Loosen the knob . 3. Mov e the seat to the desired position. 4. Tighten the knob . 5. Tip the seat bac k tot he closed position. Changing the Seat Ride Suspension The number of seat springs can be changed to maximize rider comfort. More springs should be used with heavier operators and on rough ter rain. F ew [...]

Operation engine, remov e the k ey , and wait for all mo ving parts to stop before leaving the operating position. 3. Locate the bypass release knobs on either side of the engine dec k (Figure 15). Figure 15 1. Front of the machine. 5. Lever position for pushing the machine 2. Rotate bypass release knob counterclockwise 6. Rotate bypass release kno[...]

Operation W ARNING Loading a unit on a trailer or tr uck increases the possibility of backw ard tip-o ver . Backw ard tip-o ver could cause serious injur y or death. • Use extreme caution when operating a unit on a ramp . • Use only a single, full width ramp; Do Not use indi vidual ramps for each side of the unit. • If individual ramps must b[...]

Operation Cutting Speed T o improv e cut quality , use a slow er ground speed. A void Cutting T oo Low If the cutting width of the mo wer is wider than the mow er y ou previously used, raise the cutting height to ensure that unev en turf is not cut too short. Long Grass If the g rass is ev er allo wed to grow slightly longer than nor mal, or if it [...]

Maintenance Maintenance Note: Deter mine the left and right sides of the machine from the nor mal operating position. W ARNING While maintenance or adjustments are being made, someone could start the engine. Accidental star ting of the engine could seriously injure y ou or other bystanders. Remo ve the key from the ignition s witch, engage parking [...]

Maintenance Maintenance Ser vice Inter v al Maintenance Procedure Before storage • Charge the battery and disconnect the battery cables . • P erform all maintenance procedures before storage. • P aint any chipped surfaces . Monthly • Check the battery c harge. Important: Refer to y our Engine Operator’ s Manual for additional maintenance [...]

Maintenance Figure 18 Located on the back of the seat. 1. Read the instructions before servicing or performing maintenance 5. Check hydraulic oil level and refer to Operator ’ s manual for further instructions. 2. Grease idler pivot—All units. 6. Check tire pressure. 3. T ime interval (hours). 7. Grease idler pivot—48 and 52 inch only . 4. Ch[...]

Maintenance 3. R emov e the foam sleev e from the element. 4. Gently tap the pleated side of the paper element to dislodge dirt. Do Not wash the paper element or use pressurized air , as this will damage the element. R eplace a dirty , bent, or damaged element. Handle new elements carefully; Do Not use if the r ubber seal or foam sleeve is damaged.[...]

Maintenance 3. Stop the engine , remo ve the key , and wait for all moving parts to stop before lea ving the operating position. 4. Clean the area around the drain plug and on the machine frame. Place a pan underneath mac hine directly belo w the drain hole in the frame as shown in Figure 21. Figure 21 1. Oil drain 3. Pan 2. Oil drain plug 5. R emo[...]

Maintenance Change the Hydraulic System Filter Service Interval: After the rst 250 hours Every 500 hours thereafter (Every 250 hours if using Mobil 1 15W50) 1. Stop engine, w ait for all moving parts to stop , and allow engine to cool. R emov e key and engag e parking brake . 2. Locate the tw o lters under the transmissions . R emov e lter[...]

Maintenance As stated in the maintenance inter v als , remo ve the spark plug, check condition, and reset the gap or replace with a new plug as necessar y . The spark plug is RFI compliant. Equi valent alternate brand plugs can also be used. T ype: Champion X C92Y C Champion R C12YC or QC12C may be used if y our area does not require compliance wit[...]

Maintenance Fuel System Maintenance Replacing the Fuel Filter Service Interval: Every 100 hours/Y early (whichever comes rst) DANGER In cer tain conditions, gasoline is extremely ammable and highly explosiv e. A re or explosion from gasoline can bur n y ou and others and can damage proper ty . • Perfor m any fuel related maintenance when[...]

Maintenance Charging the Battery Removing the Battery W ARNING Batter y ter minals or metal tools could shor t against metal machine components causing sparks. Sparks can cause the batter y gasses to explode, resulting in personal injur y . • When removing or installing the batter y , Do Not allow the batter y ter minals to touch an y metal par t[...]

Maintenance V oltage Reading Percent Charge Maximum Charger Settings Charging Inter v al 12.6 or g reater 100% 16 v olts/7 amps No Charging R equired 12.4 – 12.6 75–100% 16 v olts/7 amps 30 Min utes 12.2 – 12.4 50–75% 16 volts/7 amps 1 Hour 12.0–12.2 25–50% 14.4 v olts/4 amps 2 Hours 11.7–12.0 0–25% 14.4 volts/4 amps 3 Hours 11.7 or[...]

Maintenance Drive System Maintenance Checking the T ire Pressure Service Interval: Every 25 hours/Monthly (whichever comes rst) Maintain the air pressure in the front and rear tires as specied. Unev en tire pressure can cause unev en cut. Check the pressure at the v alv e stem (Figure 31). Check the tires when they are cold to get the most ac[...]

Maintenance Figure 33 48 and 52 Inch Deck 1. Blades front to rear 2. Measure here Figure 34 42 Inch Deck 1. Blades front to rear 2. Measure here 2. R otate the opposite ends of the blades forward. 3. Measure from a lev el surface to the cutting edge of the blades at the same position as in step 1. The difference between the dimensions obtained in s[...]

Maintenance Figure 35 1. Blade 2. W asher 3. Bolt and washer assembly . Apply lubricant to threads—torque to 32-42 ft-lb (43-57 N-m). Sharpening the Blades 1. Use a le to sharpen the cutting edge at both ends of the blade (Figure 36). Maintain the original angle. The blade retains its balance if the same amount of material is remo ved from bot[...]

Maintenance off the clutc h pulley as shown in Figure 38 and Figure 39. W ARNING The spring is under tension when installed and can cause personal injur y . Be careful when removing the belt. Figure 38 48 and 52 Inch Decks 1. Outside puley 4. Mower belt 2. Spring 5. Engine pulley 3. Idler pulley 6. Pull belt strands in this direction. Figure 39 42 [...]

Maintenance Figure 41 42 Inch Deck 1. Blades side to side 2. Measure here 6. Set anti-scalp rollers to top holes or remov e completely for this adjustment. 7. Set the height-of-cut lev er to the 3 inch (76 mm) position. Place tw o “B” thic k bloc ks (see Bloc k Height and Rak e T able) under the rear edge of the cutting dec k skirt; one on eac [...]

Maintenance tw o “ A ” thick blocks (see Bloc k Height and Rak e T able in Leveling the Mower Deck ) under eac h side of the front edge of the deck, but not under the anti-scalp roller brac kets . 7. Loosen the lev eling adjust loc king nuts (item 4) on all four corners so that the deck is sitting securely on all four blocks . Make sure that th[...]

Maintenance Replacing the Discharge Deector DANGER An unco vered discharge opening could allo w the lawn mower to throw objects in the operator’s or bystander’s direction and result in serious injur y . Also, contact with the blade could occur . Never operate the la wn mow er unless y ou install a mulch plate, discharge deector , or grass[...]

Maintenance Adjustments T racking Adjustment If the mac hine turns right or left when handles are pushed forw ard together , adjust the trac king plate on the side opposite the direction of turn (see Figure 47). Loosen the hardware that holds the trac king plate . Mov e the plate bac k until the unit dri ves straight. Tighten the hardw are to loc k[...]

Maintenance Note: If the mow er is not clean after one washing, soak it and let it stand for 30 min utes . Then repeat the process . 8. R un the mo wer again for one to three minutes to remo ve ex cess water . W ARNING A broken or missing w ashout tting could expose y ou and others to thrown objects or blade contact. Contact with blade or thrown[...]

Storage Storage Cleaning and Storage 1. Disengag e the blade control switch, mo ve the motion controls outw ard to the neutral position, engag e parking brak e, stop the engine , and remov e the key . 2. R emov e grass clippings , dir t, and grime from the external parts of the entire machine , especially the engine. Clean dirt and chaff from the o[...]

T roubleshooting T roubleshooting Important: It is essential that all operator safety mechanisms be connected and in proper operating condition prior to mow er use. When a problem occurs , Do Not o verlook the simple causes . F or example: star ting problems could be caused by an empty fuel tank. The follo wing table lists some of the common causes[...]

T roubleshooting Problem Possible Cause Cor rectiv e Action 1. Engine load is excessiv e. 1. R educe the g round speed. 2. Air cleaner is dirty . 2. Clean or replace the air cleaner element. 3. Oil level in the crankcase is low . 3. Add oil to the crankcase . 4. Cooling ns and air passages for the engine are plug ged. 4. R emove the obstructions[...]

Schematics Schematics Electrical Diagram FUEL SOLENOID BRAKE SWITCH RH MOTION CONTROL LH MOTION CONTROL STARTER LOCKOUT & KILL RELAY START SOLENOID GROUND START SOLENOID SIGNAL START SOLENOID B+ PTO CLUTCH GROUND ALTERNATOR OIL SWITCH HOUR METER ACCESSORIES FUSE BLOCK IGNITION SWITCH SEAT SWITCH PTO SWITCH ORANGE ORANGE Y S X A B ORANGE PINK PI[...]

Schematics Electrical Logic Schematic START SOLENOID B+ START SOLENOID GROUND SHOWN WITH CONTROL LEVERS IN NEUTRAL LOCK POSITION (HANDLES OUT) SHOWN WITH BRAKE DISENGAGED TERMINAL I TERMINAL A TERMINAL R TERMINAL B TERMINAL S GROUND GROUND - HOUR METER + 25 20 15 4 3 6 5 8 7 S R B A I START RUN OFF B + R + I + A NONE CIRCUIT "MAKE" S + B [...]

Consumer Warranty Conditions and Pr oducts Covered Exmark Mfg. Co. Inc. and its aff iliate, Exmark W arranty Company , pursuant to an agreement between them, jointly warrant on the terms and conditions herein, that we will repair , replace or adjust any part on these products and found by us (in the exercise of our reasonable discretion) to be defe[...]

Service Record Date: Description of W ork Done: Service Done By: 53[...]

54[...]

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MID-MOUNT RIDING A CCESSORIES AND OPTIONS SEE EXMARK’S COMPLETE LINE OF A CCESSORIES AND OPTIONS W ALK-BEHIND A CCESSORIES AND OPTIONS GRASS CA TCHER MICRO-MULCH SYSTEM TURF STRIPER ST ANDON CUST OM RIDE SEA T SUSPENSION SYSTEM FULL SUSPENSION SEA T DECK LIFT ASSIST KIT HITCH KIT LIGHT KIT 12 V PO WER PORT MICRO-MULCH SYSTEM OPERA T OR CONTROLLED[...]