Page 2 - WARNING
WARNING CALIFORNIA Proposition 65 Warning The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. Important: The engine in this product is not equipped with a spark arrester muffler. It is aviolation of Cali...
Page 3 - Introduction
Introduction Read this information carefully to learn how tooperate and maintain your product properly and toavoid injury and product damage. You are responsiblefor operating the product properly and safely. Exmark parts manuals are available online athttp://www.exmark.com/manuals.htm. You maycontac...
Page 4 - Contents
Contents Introduction ........................................................... 3Safety ..................................................................... 5 Safety Alert Symbol ......................................... 5Safe Operating Practices .................................. 5Safety and Ins...
Page 5 - Safety; Safety Alert Symbol; Important; calls attention to special; Note; emphasizes; Safe Operating Practices; General Operation; Never carry passengers.
Safety Safety Safety Alert Symbol This manual identifies potential hazards and hassafety messages identified by the safety alert symbol(Figure 2), which signals a hazard that may causeserious injury or death if you do not follow therecommended precautions. Figure 2 1. Safety alert symbol This manual...
Page 6 - Slope Operation; Do Not mow slopes greater than 15 degrees.; Children; Never allow children to operate the machine.; Towing; Travel slowly and allow extra distance to stop.; Service; Safe Handling of Gasoline
Safety safely enough to protect themselves and othersfrom serious injury. • Always follow the recommendations for wheelweights or counterweights. Slope Operation Slopes are a major factor related to loss of controland tip-over accidents, which can result in severeinjury or death. Operation on all sl...
Page 7 - Exmark Riding Mower Safety
Safety • Extinguish all cigarettes, cigars, pipes and othersources of ignition. • Use only an approved container. • Never remove the gas cap or add fuel when theengine is running. Allow the engine to cool beforerefueling. • Never refuel the machine indoors. • Never store the machine or fuel containe...
Page 8 - The left and right sides of the machine are
Safety • Use only Exmark approved attachments.Warranty may be voided if used with unapprovedattachments. • If loading the machine onto a trailer or truck, usea single, full-width ramp only. The ramp angleshould not exceed 15 degrees. Note: The left and right sides of the machine are determined while...
Page 9 - Safety and Instructional Decals
Safety Safety and Instructional Decals Safety decals and instructions are easily visible to the operator and are located near any areaof potential danger. Replace any decal that is damaged or lost. 93-7009 1. Warning–Do Not operatethe mower with thedischarge deflector upor removed; keep thedischarge...
Page 14 - Specifications; Model Numbers
Specifications Specifications Model Numbers Serial Nos: 850,000 and Higher QST20BE422; QST22BE482; QST24BE522; QST22BE482C; QST24BE522C Systems Engine • Engine Specifications: See your Engine Owner’sManual • RPM: – 20HP Full Speed: 3300 ±100 (max) RPM (No Load)Idle: 1650 (min) RPM – 22HP & 24HP ...
Page 15 - Hydrostatic Ground Drive System; Hydraulic Oil Type: Exmark Premium Hydro oil.; Cutting Deck; Dimensions
Specifications • Armrests: Standard–foam padded flip-upadjustable height armrests (optional on the 42inch unit). • Seat Safety Switch: Incorporated into the SafetyInterlock System. Hydrostatic Ground Drive System • Hydrostatic Pumps: Two Hydro Gear ZT2800Integrated drive systems. • Hydraulic Oil Typ...
Page 16 - Torque Requirements; Product Overview
Product Overview Overall Height: All Units 41.8 inches (106 cm) Tread Width: (Center to Center ofTires, Widthwise) 42 inchDeck 48 inchDeck 52 inchDeck DriveWheels 36.0 inches(91 cm) 36.0 inches(91 cm) 36.8 inches(93 cm) CasterWheels 27.9 inches(71 cm) 33.5 inches(85 cm) 33.5 inches(85 cm) Wheel Base...
Page 17 - Operation; Controls; Become familiar with all of the controls in; Ignition Switch; Located on control panel.; Brake must be engaged, motion control levers; Motion Control Levers
Operation Operation Controls Note: Become familiar with all of the controls in Figure 3 and Figure 4 before you start the engine andoperate the machine. Ignition Switch Located on control panel. The ignition switch is used to start and stop theengine. The switch has three positions “OFF”,“RUN” and “...
Page 18 - Parking Brake Lever; Operating Instructions; Think Safety First; To avoid loss of control and possibility of rollover:; Recommended Gasoline
Operation Parking Brake Lever Located on left side of the console (Figure 3). The brake lever engages a parking brake on the drivewheels. Pull the lever up and rearward to engage the brake. Push the lever forward and down to disengage thebrake. Height-of-Cut Foot Lever The height of cut lever allows...
Page 19 - Never use methanol, gasoline; DANGER; Avoid prolonged breathing of vapors.
Operation Important: Never use methanol, gasoline containing methanol, gasohol containing morethan 10% ethanol, premium gasoline, or whitegas because the fuel system could be damaged.Do Not mix oil with gasoline. DANGER In certain conditions gasoline is extremelyflammable and vapors are explosive. A...
Page 20 - Using Stabilizer/Conditioner; Checking the Oil Level; Starting the Engine
Operation Using Stabilizer/Conditioner Use a fuel stabilizer/conditioner in the machine toprovide the following benefits: • Keeps gasoline fresh during storage of 30 days orless. For longer storage it is recommended thatthe fuel tank be drained. • Cleans the engine while it runs. • Eliminates gum-li...
Page 21 - Do Not engage the starter for; Operating the Blades; Engaging the Blades; Disengaging the Blades; Stopping the Engine
Operation Figure 7 1. Throttle/Choke lever 5. Run 2. Blade controlswitch—Off position 6. Start 3. Ignition key 7. Choke 4. Off 8. Throttle–fast (detentposition) 3. Move the lever forward, beyond the detent, to engage the choke before starting a cold engine(Figure 7). Note: A warm or hot engine may n...
Page 22 - The Safety Interlock System; Driving Forward or Backward; CAUTION
Operation The Safety Interlock System CAUTION If the safety interlock switches are disconnectedor damaged the machine could operateunexpectedly causing personal injury. • Do not tamper with the interlock switches. • Check the operation of the interlock switchesdaily and replace any damaged switchesb...
Page 23 - Forward; Backward; Stopping the Machine; Adjusting the Height of Cut
Operation Forward 1. Move the levers to the center, unlocked position. 2. To go forward, slowly push the motion control levers forward (Figure 9). Figure 9 1. Neutral position 3. Backward 2. Center unlock position 4. Forward To go straight, apply equal pressure to bothmotion control levers (Figure 9...
Page 24 - For Maximum Deck Flotation,; Positioning the Seat
Operation Adjusting the Anti-ScalpRollers It is recommended to change the anti-scalp rollerposition when the height of cut has changed. 1. Stop the machine and move the drive levers to the neutral lock position. 2. Disengage the PTO. 3. Engage the park brake. 4. Stop the engine, remove the key and w...
Page 25 - Adjusting the Height; Always push the machine by hand.; To Push the Machine
Operation Figure 13 1. Bolt 3. Nut 2. Spring 4. Additional mountingholes Up to five springs can be secured to the seat box witha nut and bolt, see Figure 13. Refer to your Parts Manual for spring and hardwarepart numbers. Adjusting the Motion ControlLevers Adjusting the Height The motion control lev...
Page 26 - Loosen the knob by turning counterclockwise.; To Operate the Machine; Side Discharge; Transporting; Transporting a Unit; Do Not drive a unit on a public street or roadway.
Operation Figure 15 1. Front of the machine. 5. Lever position forpushing the machine 2. Rotate bypass releaseknob counterclockwise 6. Rotate bypass releaseknob clockwise 3. Lever position foroperating the machine. 7. Release lever 4. Pull lever in this direction 4. Loosen the knob by turning counte...
Page 27 - Do Not attempt to turn the unit; Operating Tips; To improve cut quality, use a slower ground speed.
Operation WARNING Loading a unit on a trailer or truck increasesthe possibility of backward tip-over. Backwardtip-over could cause serious injury or death. • Use extreme caution when operating a uniton a ramp. • Use only a single, full width ramp; Do Notuse individual ramps for each side of the unit...
Page 28 - Long Grass
Operation Long Grass If the grass is ever allowed to grow slightly longerthan normal, or if it contains a high degree ofmoisture, raise the cutting height higher than usualand cut the grass at this setting. Then cut the grassagain using the lower, normal setting. When Stopping If the machine’s forwa...
Page 29 - Maintenance
Maintenance Maintenance Note: Determine the left and right sides of the machine from the normal operating position. WARNING While maintenance or adjustments are beingmade, someone could start the engine.Accidental starting of the engine could seriouslyinjure you or other bystanders. Remove the key f...
Page 30 - Raising the Seat; Periodic Maintenance; Lubrication; Greasing the Bearings
Maintenance Maintenance Service Interval Maintenance Procedure Before storage • Charge the battery and disconnect the battery cables.• Perform all maintenance procedures before storage.• Paint any chipped surfaces. Monthly • Check the battery charge. Important: Refer to your Engine Operator’s Manual...
Page 31 - Engine Maintenance; Servicing the Air Cleaner; Servicing Paper Element; Servicing the Engine Oil; Service Interval: Before each use or daily
Maintenance Engine Maintenance Servicing the Air Cleaner Service Interval: Every 25 hours/Monthly (whichever comes first)(May need more oftenunder extremely dusty ordirty conditions.) Every 100 hours/Yearly(whichever comesfirst)—Replace the paperelement. (More oftenunder extremely dusty,dirty condit...
Page 32 - Changing the Oil and Filter; Service Interval: After the first 5 hours
Maintenance Figure 19 1. Oil dipstick 3. Oil level 2. Filler tube 5. Remove the dipstick and check the oil level. The oil level should be up to, but not over, the“F” mark on the dipstick. 6. If the level is low, add oil of the proper type, up to the “F” mark on the dipstick. Always check thelevel wi...
Page 33 - Checking; Service Interval: After the first 100 hours
Maintenance in-lb) torque. Wipe up any excess oil on the frame(Figure 20 ). Note: Dispose of the used oil at a recycling center. 9. Apply a thin film of clean oil to the rubber gasket on the new filter. 10. Install the replacement oil filter to the mounting pad. Turn the oil filter clockwise until t...
Page 34 - Servicing the Spark Plug; Service Interval: Every 200 hours/Every 2; Removing the Spark Plug
Maintenance Figure 23 1. Oil filter 3. Left rear tire 2. Vent plug 6. Raise the rear of machine up and support with jack stands (or equivalent support) just highenough to allow drive wheels to turn freely. CAUTION Raising the mower for service or maintenancerelying solely on mechanical or hydraulicj...
Page 35 - Checking the Spark Plug; Never clean the spark plug.; Installing the Spark Plug; Cleaning the Blower Housing; Operating the engine with a blocked; Fuel System Maintenance; Replacing the Fuel Filter
Maintenance Figure 24 1. Spark plug and wire location Checking the Spark Plug 1. Look at the center of the spark plug (Figure 25). If you see light brown or gray on the insulator, theengine is operating properly. A black coating onthe insulator usually means the air cleaner is dirty. Important: Neve...
Page 36 - Turn fuel shut off valve 90° to “off ” position.; Charging the Battery; Removing the Battery
Maintenance Figure 26 1. Fuel tank 6. Hose clamps 2. Fuel shut off valve—off 7. Fuel line to engine 3. Fuel shut off valve 8. Filter 4. Fuel shut off valve—on 9. Flow direction arrow 5. Fuel line from tank 4. Turn fuel shut off valve 90° to “off ” position. 5. Squeeze the ends of the hose clamps tog...
Page 38 - Check the weak battery for terminal corrosion; Make sure the booster is a good and fully charged; The following instructions are adapted; Do Not lean over the batteries.; Be sure the vent caps are tight and level.
Maintenance VoltageReading PercentCharge MaximumChargerSettings ChargingInterval 12.4 – 12.6 75–100% 16 volts/7amps 30 Minutes 12.2 – 12.4 50–75% 16 volts/7amps 1 Hour 12.0–12.2 25–50% 14.4 volts/4amps 2 Hours 11.7–12.0 0–25% 14.4 volts/4amps 3 Hours 11.7 or less 0% 14.4 volts/2amps 6 Hours orMore R...
Page 39 - Installing the Battery; Drive System Maintenance
Maintenance 4. Connect the other end of the positive cable to the positive terminal of the booster battery. 5. Connect the black negative (–) cable to the other terminal (negative) of the booster battery. 6. MAKE THE FINAL CONNECTION ON THE ENGINE BLOCK OF THE STALLEDVEHICLE (NOT TO THE NEGATIVE POS...
Page 40 - Mower Maintenance; Replace a worn or damaged blade.; Inspecting the Blades; Sharpening the Blades; Checking for Bent Blades; Rotate the blades until the ends face forward and
Maintenance Figure 30 1. Valve stem Mower Maintenance Servicing the Cutting Blades Service Interval: Before each use or daily Maintain sharp blades throughout the cutting seasonbecause sharp blades cut cleanly without tearing orshredding the grass blades. Tearing and shreddingturns grass brown at th...
Page 41 - Removing the Blades; Removing the Blades
Maintenance Figure 33 42 Inch Deck 1. Blades front to rear 2. Measure here 2. Rotate the opposite ends of the blades forward. 3. Measure from a level surface to the cutting edge of the blades at the same position as in step 1.The difference between the dimensions obtainedin steps 1 and 3 must not ex...
Page 42 - Installing the Blades; The curved part of the blade; Mower Belt Maintenance; Inspecting the Belts; Be careful when removing the belt.
Maintenance Figure 35 1. Sharpen at original angle 2. Check the balance of the blade by putting it on a blade balancer (Figure 36). If the blade stays in ahorizontal position, the blade is balanced and canbe used. If the blade is not balanced, file somemetal off the end of the sail area only (Figure...
Page 43 - Leveling the Mower Deck; Checking the Tire Pressure
Maintenance Figure 37 48 and 52 Inch Decks 1. Outside puley 4. Mower belt 2. Spring 5. Engine pulley 3. Idler pulley 6. Pull belt strands in thisdirection. Figure 38 42 Inch Deck 1. Outside puley 4. Mower belt 2. Spring 5. Engine pulley 3. Idler pulley 6. Pull belt strands in thisdirection. 6. Route...
Page 44 - Adjusting the Blade Slope
Maintenance 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 BlockHeight and Rake Table) under the rear edge of thecutting deck skirt; one on each side of the cuttingdeck. P...
Page 45 - Measure from the tip of the front blade to the; the rear blade tip, adjust the front deck hanger.; Leveling the Mower; Orient the spring so that the short leg points
Maintenance 9. Measure from the tip of the front blade to the flat surface and the tip of the rear blade to theflat surface (Figure 42 and Figure 43). If the frontblade tip is not “R” (see Block Height and RakeTable in Leveling the Mower Deck ) lower than the rear blade tip, adjust the front deck ha...
Page 46 - The discharge deflector must be; Adjustments; Tracking Adjustment; Brake Linkage Adjustment; Pushing the Machine by Hand
Maintenance through the front discharge deflector bracket,discharge deflector, and rear deflector bracket. 5. Make sure that the spring and rod are installed so that the rod is retained from sliding outby the front bracket and the spring holds thedischarge deflector in the down position. Refer to(Fi...
Page 47 - Cleaning
Maintenance 6. If adjustment is necessary, loosen the jam nut from the yoke on the side that needs adjustment.Remove the hairpin and clevis pin (see Figure 46). Figure 46 1. Hairpin 3. Yoke 2. Clevis pin 4. Jam nut • Adjusting the Brake to Engage: Shorten thelinkage by turning the yoke clockwise. • ...
Page 48 - If the mower is not clean after one
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 couldexpose you and others to thrown objects orblade con...
Page 49 - Storage; Cleaning and Storage
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, andremove the key. 2. Remove grass clippings, dirt, and grime from the external parts of the entire machine, especially theengin...
Page 50 - Troubleshooting; condition prior to mower use.
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 becaused by an empty fuel tank. The followi...
Page 52 - Schematics; Electrical Diagram
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...
Page 53 - Electrical Logic Schematic
Schematics Electrical Logic Schematic S TA R T SOLENOID B+ S TA R T SOLENOID G R OUND SH O WN WITH CONT R OL LEVERS IN NEUTRAL LOCK POSITION (HANDLES OUT) SH O WN WITH BRAKE DISENG A GED TERMINAL I TERMINAL A TERMINAL R TERMINAL B TERMINAL S G R OUND G R OUND - HOUR METER + 25 20 15 4 3 6 5 8 7 S R ...
Page 54 - Exmark Quest Turf Equipment
Consumer Warranty Conditions and Products Covered Exmark Mfg. Co. Inc. and its affiliate, Exmark Warranty 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 exer...
Page 57 - Service Record
Service Record Date: Description of Work Done: Service Done By: 57
Page 60 - M I D - M O U N T R I D I N G AC C E S S O R I E S A N D O P T I O N S; SEE EXMARK’S COMPLETE LINE OF ACCESSORIES AND OPTIONS; WALK-BEHIND ACCESSORIES AND OPTIONS
M I D - M O U N T R I D I N G AC C E S S O R I E S A N D O P T I O N S SEE EXMARK’S COMPLETE LINE OF ACCESSORIES AND OPTIONS WALK-BEHIND ACCESSORIES AND OPTIONS GRASS CATCHER MICRO-MULCH SYSTEM TURF STRIPER STANDON CUSTOM RIDE SEAT SUSPENSION SYSTEM FULL SUSPENSION SEAT DECK LIFT ASSIST KIT HITCH KI...
