Table of Contents
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Table of Contents
Related Manuals for Exmark Quest 4500-450
Summary of Contents for Exmark Quest 4500-450
- Page 1 QUEST ® For Serial Nos. 790,000 & Higher Part No. 4500-450 Rev. A...
- Page 2 SAE J1940. As configured to meet safety, emission, and operating requirements, the actual engine horsepower on this class of lawn mower will be significantly lower. © 2009—Exmark Mfg. Co., Inc. Industrial Park Box 808 Beatrice, NE 68310 Contact us at www.Exmark.com.
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Page 3: Introduction
Whenever you need service, genuine Exmark parts, or additional information, contact an Authorized Service Dealer or Exmark Customer Service and have the model and serial numbers of your product ready. Figure 1 identifies the location of the model and serial numbers on the product. -
Page 4: Table Of Contents
Contents Introduction ... 3 Safety ... 5 Safety Alert Symbol ... 5 Safe Operating Practices ... 5 Safety and Instructional Decals ... 8 Specifications ... 13 Model Numbers ... 13 Systems ... 13 Dimensions... 14 Torque Requirements ... 15 Product Overview ... 15 Operation ... -
Page 5: Safety
Safety Safety Alert Symbol This manual identifies potential hazards and has safety messages identified by the safety alert symbol (Figure 2), which signals a hazard that may cause serious injury or death if you do not follow the recommended precautions. Figure 2 1. -
Page 6: Slope Operation
Towing • Use for towing only if equipped with an Exmark hitch kit. Do Not attach towed equipment except at the hitch point. • Follow Exmark’s recommendation for weight limits for towed equipment and towing on slopes. - Page 7 Adjust and service as required. • Maintain or replace safety and instruction decals as necessary. • Use only genuine Exmark replacement parts to ensure that original standards are maintained. Exmark Riding Mower Safety The following list contains safety information specific...
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Page 8: Safety And Instructional Decals
Safety Safety and Instructional Decals Safety decals and instructions are easily visible to the operator and are located near any area of potential danger. Replace any decal that is damaged or lost. 93-7009 1. Warning–Do Not operate 2. Cutting/dismemberment the mower with the hazard of hand or foot, discharge deflector up mower blade–stay away... - Page 9 109-6035 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.
- Page 10 Safety 110-6691 1. Thrown objects 3. Cutting/dismemberment hazard–keep bystanders of hand or foot–stay a safe distance from the away from moving parts. machine. 2. Thrown objects hazard, mower–keep the discharge deflector or collection system in place. 116-0531 116-0532 QST20BE422 Unit 1.
- Page 11 PTO Symbols 1. PTO—Off 2. PTO—On 1. Read the instructions before servicing or performing maintenance. 2. Time interval 3. Check oil level. 109-6016 4. Refer to the Operator’s manual for grease instructions. 5. Check hydraulic oil level and refer to the Operator’s Manual for further instructions.
- Page 12 Safety 1. Warning–read the Operator’s Manual. 2. Read the instructions before servicing or performing maintenance; apply parking brake, remove the ignition key and disconnect the spark plug wire. 3. Thrown object hazard—keep bystanders a safe distance from the machine, pick up debris before operating, keep the discharge deflector in place.
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Page 13: Specifications
Specifications Model Numbers Serial Nos: 790,000 and Higher QST20BE422; QST22BE482; QST24BE522 Systems Engine • Engine Specifications: See your 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) RPM Fuel System... -
Page 14: Dimensions
Interlock System. Hydrostatic Ground Drive System • Hydrostatic Pumps: Two Hydro Gear ZT2800 Integrated drive systems. • Hydraulic Oil Type: Exmark Premium Hydro oil. • Speeds: – 42 inch unit ◊ 0-6.0 mph (9.7 km/hr) forward. ◊ 0-4.0 mph (6.4 km/hr) reverse. -
Page 15: Torque Requirements
Overall Height: All Units 41.8 inches (106 cm) Tread Width: (Center to Center of Tires, Widthwise) 42 inch 48 inch Deck Deck Drive 36.0 inches 36.0 inches Wheels (91 cm) (91 cm) Caster 27.9 inches 33.5 inches Wheels (71 cm) (85 cm) Wheel Base: (Center of Caster Tire to Center of Drive Tire) -
Page 16: Operation
Operation Operation Controls Note: Become familiar with all of the controls in Figure 3 and Figure 4 before you start the engine and operate the machine. Ignition Switch Located on control panel. The ignition switch is used to start and stop the engine. -
Page 17: Operating Instructions
Parking Brake Lever Located on left side of the console (Figure 3). The brake lever engages a parking brake on the drive wheels. Pull the lever up and rearward to engage the brake. Push the lever forward and down to disengage the brake. -
Page 18: Recommended Gasoline
Operation See inside back cover to determine the approximate slope angle to be mowed. Recommended Gasoline Use UNLEADED Regular Gasoline suitable for automotive use (87 pump octane minimum). Important: Never use methanol, gasoline containing methanol, or gasohol containing more than 10% ethanol because the fuel system could be damaged. -
Page 19: Checking The Engine Oil Level
Using Stabilizer/Conditioner Use a fuel stabilizer/conditioner in the machine to provide the following benefits: • Keeps gasoline fresh during storage of 30 days or less. For longer storage it is recommended that the fuel tank be drained. • Cleans the engine while it runs. •... -
Page 20: Operating The Blades
Operation Figure 7 1. Throttle/Choke lever 5. Run 2. Blade control 6. Start switch—Off position 3. Ignition key 7. Choke 4. Off 8. Throttle–fast (detent position) 3. Move the lever forward, beyond the detent, to engage the choke before starting a cold engine (Figure 7). -
Page 21: The Safety Interlock System
- engine must initiate shutdown whether operator is on seat or not. Note: If machine does not pass any of these tests, Do Not operate. Contact your authorized EXMARK SERVICE DEALER. Important: It is essential that operator safety mechanisms be connected and in proper operating condition prior to use for mowing. -
Page 22: Stopping The Machine
Operation CAUTION Machine can spin very rapidly by positioning one lever too much ahead of the other. Operator may lose control of the machine, which may cause damage to the machine or injury. • Use caution when making turns. • Slow the machine down before making sharp turns. -
Page 23: Adjusting The Anti-Scalp Rollers
Figure 10 1. Transport release handle 3. Height adjuster pin 2. Height-of-cut positions 4. Foot actuated height-of-cut lever 2. Move the deck height adjuster pin to the desired cut height. 3. Push the foot lever forward, pull the transport release handle up and let the deck lower down to the predetermined cut height by slowly decreasing foot pressure allowing the foot lever to travel rearward. -
Page 24: Changing The Seat Ride Suspension
Operation 1. Tip the seat forward. 2. Loosen the knob. 3. Move the seat to the desired position. 4. Tighten the knob. 5. Tip the seat back tot he closed position. Changing the Seat Ride Suspension The number of seat springs can be changed to maximize rider comfort. -
Page 25: Side Discharge
engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 3. Locate the bypass release knobs on either side of the engine deck (Figure 15). Figure 15 1. Front of the machine. 5. Lever position for pushing the machine 2. -
Page 26: Operating Tips
Operation WARNING Loading a unit on a trailer or truck increases the possibility of backward tip-over. Backward tip-over could cause serious injury or death. • Use extreme caution when operating a unit on a ramp. • Use only a single, full width ramp; Do Not use individual ramps for each side of the unit. -
Page 27: Cutting Speed
File down any nicks and sharpen the blades as necessary. If a blade is damaged or worn, replace it immediately with a genuine Exmark replacement blade. Only Exmark blades are to be used with this unit. No other blades are approved. -
Page 28: Maintenance
Maintenance Maintenance Note: Determine the left and right sides of the machine from the normal operating position. While maintenance or adjustments are being made, someone could start the engine. Accidental starting of the engine could seriously injure you or other bystanders. Remove the key from the ignition switch, engage parking brake, and pull the wire(s) off the spark plug(s) before you do any maintenance. -
Page 29: Premaintenance Procedures
Maintenance Service Maintenance Procedure Interval • Charge the battery and disconnect the battery cables. • Perform all maintenance procedures before storage. Before storage • Paint any chipped surfaces. Monthly • Check the battery charge. Important: Refer to your Engine Operator’s Manual for additional maintenance procedures. Premaintenance Procedures Raising the Seat... -
Page 30: Engine Maintenance
Maintenance Figure 18 Located on the back of the seat. 1. Read the instructions 5. Check hydraulic oil level before servicing or and refer to Operator’s performing maintenance manual for further instructions. 2. Grease idler pivot—All 6. Check tire pressure. units. -
Page 31: Servicing The Engine Oil
3. Remove the foam sleeve 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. Replace a dirty, bent, or damaged element. -
Page 32: Checking The Hydraulic Oil Level
16. Start the engine and check for leaks. Checking the Hydraulic Oil Level Service Interval: Before each use or daily Check expansion tank and if necessary add Exmark Premium Hydro oil to the FULL COLD line. Figure 23 1. Engine... -
Page 33: Change The Hydraulic System Filter
4. Unscrew filters to remove and allow oil to drain from drive system. Important: Before reinstalling new filters, apply a thin coat of Exmark Premium Hydro oil on the surface of the filters rubber seal. Turn the filters clockwise until rubber seal contacts the filter adapter then tighten the filter an additional 3/4 to 1 full turn. -
Page 34: Cleaning The Blower Housing
Maintenance As stated in the maintenance intervals, remove the spark plug, check condition, and reset the gap or replace with a new plug as necessary. The spark plug is RFI compliant. Equivalent alternate brand plugs can also be used. Type: Champion XC92YC Champion RC12YC or QC12C may be used if your area does not require compliance with Canadian ICES-002, ISO 14982, or EN 55012. -
Page 35: Fuel System Maintenance
Fuel System Maintenance Replacing the Fuel Filter Service Interval: Every 100 hours/Yearly (whichever comes first) DANGER In certain conditions, gasoline is extremely flammable and highly explosive. A fire or explosion from gasoline can burn you and others and can damage property. •... -
Page 36: Charging The Battery
Maintenance Charging the Battery Removing the Battery WARNING Battery terminals or metal tools could short against metal machine components causing sparks. Sparks can cause the battery gasses to explode, resulting in personal injury. • When removing or installing the battery, Do Not allow the battery terminals to touch any metal parts of the machine. -
Page 37: Servicing The Fuses And Relay
Voltage Percent Maximum Reading Charge Charger Settings 12.6 or 100% 16 volts/7 greater amps 12.4 – 12.6 75–100% 16 volts/7 amps 12.2 – 12.4 50–75% 16 volts/7 amps 12.0–12.2 25–50% 14.4 volts/4 amps 11.7–12.0 0–25% 14.4 volts/4 amps 11.7 or less 14.4 volts/2 amps 4. -
Page 38: Drive System Maintenance
File down any nicks and sharpen the blades as necessary. If a blade is damaged or worn, replace it immediately with a genuine Exmark replacement blade. For convenient sharpening and replacement, you may want to keep extra blades on hand. -
Page 39: Removing The Blades
The blades must be replaced if a solid object is hit, if the blade is out of balance, or the blade is bent. To ensure optimum performance and continued safety conformance of the machine, use genuine Exmark replacement blades. Replacement blades made by other manufacturers may result in an unsafe machine. -
Page 40: Mower Belt Maintenance
Incorrect installation of the blade or components used to retain the blade cause the blade to come loose and could seriously injure or kill you or bystanders. Always install the original Exmark blades, washers and blade bolts as shown. Mower Belt Maintenance Inspecting the Belts... -
Page 41: Leveling The Mower Deck
off the clutch pulley as shown in Figure 38 and Figure 39. WARNING The spring is under tension when installed and can cause personal injury. Be careful when removing the belt. Figure 38 48 and 52 Inch Decks 4. Mower belt 1. -
Page 42: Adjusting The Blade Slope
Maintenance Figure 41 42 Inch Deck 1. Blades side to side 2. Measure here 6. Set anti-scalp rollers to top holes or remove completely for this adjustment. 7. Set the height-of-cut lever to the 3 inch (76 mm) position. Place two “B” thick blocks (see Block Height and Rake Table) under the rear edge of the cutting deck skirt;... - Page 43 two “A” thick blocks (see Block Height and Rake Table in Leveling the Mower Deck) under each side of the front edge of the deck, but not under the anti-scalp roller brackets. 7. Loosen the leveling adjust locking nuts (item 4) on all four corners so that the deck is sitting securely on all four blocks.
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Page 44: Replacing The Discharge Deflector
Replacing the Discharge Deflector DANGER An uncovered discharge opening could allow the lawn mower to throw objects in the operator’s or bystander’s direction and result in serious injury. Also, contact with the blade could occur. Never operate the lawn mower unless you install a mulch plate, discharge deflector, or grass collection system. -
Page 45: Adjustments
Adjustments Tracking Adjustment If the machine turns right or left when handles are pushed forward together, adjust the tracking plate on the side opposite the direction of turn (see Figure 47). Loosen the hardware that holds the tracking plate. Move the plate back until the unit drives straight. Tighten the hardware to lock the tracking plate in place. - Page 46 Maintenance Note: If the mower is not clean after one washing, soak it and let it stand for 30 minutes. Then repeat the process. 8. Run the mower again for one to three minutes to remove excess water. WARNING A broken or missing washout fitting could expose you and others to thrown objects or blade contact.
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Page 47: Storage
Storage Cleaning and Storage 1. Disengage the blade control switch, move the motion controls outward to the neutral position, engage parking brake, stop the engine, and remove the key. 2. Remove grass clippings, dirt, and grime from the external parts of the entire machine, especially the engine. -
Page 48: Troubleshooting
Troubleshooting Troubleshooting Important: It is essential that all operator safety mechanisms be connected and in proper operating condition prior to mower use. When a problem occurs, Do Not overlook the simple causes. For example: starting problems could be caused by an empty fuel tank. The following table lists some of the common causes of trouble. - Page 49 Problem Engine loses power The machine does not drive. Abnormal vibration Uneven cutting height. Blades do not rotate. Possible Cause 1. Engine load is excessive. 2. Air cleaner is dirty. 3. Oil level in the crankcase is low. 4. Cooling fins and air passages for the engine are plugged.
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Page 50: Schematics
Schematics Schematics Electrical Diagram ENGINE BLUE ORANGE PINK PINK VIOLET PINK BROWN BROWN GREEN BROWN GREEN BLUE GREEN BLACK BLACK G009785... - Page 51 Electrical Logic Schematic GREEN GREEN BROWN BROWN VIOLET ORANGE ORANGE VIOLET ORANGE ORANGE PINK PINK VIOLET BLUE ORANGE VIOLET PINK PINK PINK BROWN BROWN BROWN GRAY Schematics BROWN GREEN BLUE GREEN GREEN GREEN BLACK BLACK BLACK WHITE YELLOW YELLOW G009777...
- Page 52 (in the exercise of our reasonable discretion) to be defective in factory materials or workmanship for a period of three years for residential usage of Exmark Quest turf equipment. Residential usage means use of the product on the same lot as your home.
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Page 53: Service Record
Service Record Date: Description of Work Done: Service Done By:... - Page 56 SEE EXMARK’S COMPLETE LINE OF ACCESSORIES AND OPTIONS MID-MOUNT RIDING ACCESSORIES AND OPTIONS CUSTOM RIDE SEAT SUSPENSION SYSTEM FULL SUSPENSION SEAT DECK LIFT ASSIST KIT HITCH KIT LIGHT KIT V POWER PORT MICRO-MULCH SYSTEM OUT-FRONT RIDING ACCESSORIES AND OPTIONS CUSTOM RIDE SEAT SUSPENSION SYSTEM...