Page 2 - WARNING; CALIFORNIA
WARNING CALIFORNIA Proposition 65 Warning The engine exhaust from this productcontains chemicals known to the State ofCalifornia to cause cancer, birth defects, orother reproductive harm. Important: This engine is not equipped with a spark arrester muffler. It is a violation ofCalifornia Public Reso...
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. You may contact Exmark directly atwww.Exmark.com for product and accessoryinformation or hel...
Page 4 - Contents
Contents Introduction ........................................................... 3Safety ..................................................................... 5 Safety Alert Symbol ......................................... 5Safe Operating Practices .................................. 5Safety and Ins...
Page 5 - Safety; Safety Alert Symbol; Important; Safe Operating Practices; General Operation
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 - Use only an approved container.; Exmark Riding Mower Safety; The left and right sides of the machine are
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 - 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 13 - Specifications; Model Numbers
Specifications Specifications Model Numbers Serial Nos: 790,000 and Higher QST20BE422; QST22BE482; QST24BE522 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 Full Speed: 3650 ±100 (max...
Page 14 - 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 15 - 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 16 - 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 17 - Parking Brake Lever; Operating Instructions; Think Safety First; DANGER
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 18 - Recommended Gasoline; Never use methanol, gasoline; Avoid prolonged breathing of vapors.
Operation See inside back cover to determine the approximateslope angle to be mowed. Recommended Gasoline Use UNLEADED Regular Gasoline suitable forautomotive use (87 pump octane minimum). Important: Never use methanol, gasoline containing methanol, or gasohol containingmore than 10% ethanol because...
Page 19 - 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 20 - 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 21 - The Safety Interlock System; Testing the Safety Interlock System; Driving Forward or Backward
Operation The Safety Interlock System CAUTION If safety interlock switches are disconnectedor damaged the machine could operateunexpectedly causing personal injury. • Do Not tamper with the interlockswitches. • Check the operation of the interlockswitches daily and replace any damagedswitches before...
Page 22 - CAUTION; Use caution when making turns.; Forward; To stop, pull the motion control levers to neutral.; Backward; To go backward, slowly pull the motion control; Stopping the Machine
Operation CAUTION Machine can spin very rapidly by positioningone lever too much ahead of the other.Operator may lose control of the machine,which may cause damage to the machineor injury. • Use caution when making turns. • Slow the machine down before makingsharp turns. Forward 1. Move the levers t...
Page 23 - For Maximum Deck Flotation,; Positioning the Seat
Operation Figure 10 1. Transport release handle 3. Height adjuster pin 2. Height-of-cut positions 4. Foot actuatedheight-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 tothe...
Page 24 - Adjusting the Height; Always push the machine by hand.; To Push the Machine
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 RideSuspension The number of seat springs can be changed tomaximize rider comfort. More springs should be usedwith heav...
Page 25 - Locate the bypass release knobs on either side of; Loosen the knob by turning counterclockwise.; To Operate the Machine; Side Discharge; Transporting a Unit
Operation engine, remove the key, and wait for all movingparts 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 forpushing the machine 2. Rotate bypass releaseknob cou...
Page 26 - Do Not attempt to turn the unit; Operating Tips
Operation WARNING Loading a unit on a trailer or truck increasesthe possibility of backward tip-over.Backward tip-over could cause serious injuryor death. • Use extreme caution when operating aunit on a ramp. • Use only a single, full width ramp; DoNot use individual ramps for each sideof the unit. ...
Page 27 - Cutting Speed; To improve cut quality, use a slower ground speed.; Avoid Cutting Too Low
Operation Cutting Speed To improve cut quality, use a slower ground speed. Avoid Cutting Too Low If the cutting width of the mower is wider than themower you previously used, raise the cutting heightto ensure that uneven turf is not cut too short. Long Grass If the grass is ever allowed to grow slig...
Page 28 - Maintenance
Maintenance Maintenance Note: Determine the left and right sides of the machine from the normal operating position. WARNING While maintenance or adjustments are being made, someone could start the engine. Accidentalstarting of the engine could seriously injure you or other bystanders. Remove the key...
Page 29 - 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 30 - Connect a grease gun to each fitting (Figure 17; Engine Maintenance; Servicing the Air Cleaner; Operating the engine with loose or damaged; Servicing Paper Element; Remove the air cleaner element with the integral
Maintenance Figure 18 Located on the back of the seat. 1. Read the instructionsbefore servicing orperforming maintenance 5. Check hydraulic oil leveland refer to Operator’smanual for furtherinstructions. 2. Grease idler pivot—Allunits. 6. Check tire pressure. 3. Time interval (hours). 7. Grease idle...
Page 31 - Servicing the Engine Oil; Service Interval: Before each use or daily; Changing the Oil and Filter; Service Interval: After the first 5 hours
Maintenance 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 elementor use pressurized air, as this will damage theelement. Replace a dirty, bent, or damagedelement. Handle new elements carefully; Do Notuse if the...
Page 32 - Checking
Maintenance 3. Stop the engine, remove the key, and wait for all moving parts to stop before leaving the operatingposition. 4. Clean the area around the drain plug and on the machine frame. Place a pan underneath machinedirectly below the drain hole in the frame asshown in Figure 21. Figure 21 1. Oi...
Page 33 - Service Interval: After the first 250 hours; Servicing the Spark Plug; Service Interval: Every 200 hours/Every 2
Maintenance Change the HydraulicSystem Filter Service Interval: After the first 250 hours Every 500 hours thereafter(Every 250 hours if usingMobil 1 15W50) 1. Stop engine, wait for all moving parts to stop, and allow engine to cool. Remove key and engageparking brake. 2. Locate the two filters under...
Page 34 - Removing the Spark Plug; Checking the Spark Plug; Never clean the spark plug.; Installing the Spark Plug; Cleaning the Blower Housing; Operating the engine with a blocked
Maintenance As stated in the maintenance intervals, remove thespark plug, check condition, and reset the gap orreplace with a new plug as necessary. The spark plug is RFI compliant. Equivalent alternatebrand plugs can also be used. Type: Champion XC92YC Champion RC12YC or QC12C may be used if yourar...
Page 35 - Fuel System Maintenance; Replacing the Fuel Filter
Maintenance Fuel System Maintenance Replacing the Fuel Filter Service Interval: Every 100 hours/Yearly (whichever comes first) DANGER In certain conditions, gasoline is extremelyflammable and highly explosive. A fire orexplosion from gasoline can burn you andothers and can damage property. • Perform...
Page 36 - Removing the Battery; Charging the Battery; Removing the Battery
Maintenance Charging the Battery Removing the Battery WARNING Battery terminals or metal tools could shortagainst metal machine components causingsparks. Sparks can cause the battery gassesto explode, resulting in personal injury. • When removing or installing the battery,Do Not allow the battery te...
Page 37 - Installing the Battery
Maintenance VoltageReading PercentCharge MaximumChargerSettings ChargingInterval 12.6 orgreater 100% 16 volts/7amps NoChargingRequired 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 H...
Page 38 - Drive System Maintenance; 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 Drive System Maintenance Checking the Tire Pressure Service Interval: Every 25 hours/Monthly (whichever comes first) Maintain the air pressure in the front and rear tires asspecified. Uneven tire pressure can cause uneven cut.Check the pressure at the valve stem (Figure 31). Check the ti...
Page 39 - Removing the Blades; Removing the Blades
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. 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 ...
Page 40 - Installing the Blades; The curved part of the blade; Inspecting the Belts
Maintenance Figure 35 1. Blade 2. Washer 3. Bolt and washer assembly. Apply lubricant tothreads—torque to 32-42 ft-lb (43-57 N-m). Sharpening the Blades 1. Use a file to sharpen the cutting edge at both ends of the blade (Figure 36). Maintain the originalangle. The blade retains its balance if the s...
Page 41 - Be careful when removing the belt.; Leveling the Mower Deck; Checking the Tire Pressure
Maintenance off the clutch pulley as shown in Figure 38 andFigure 39. WARNING The spring is under tension when installedand can cause personal injury. 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 b...
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 BlockHeight and Rake Table) under the rear edge of...
Page 43 - Carefully rotate the blades so they are facing front; the rear blade tip, adjust the front deck hanger.; Leveling the Mower
Maintenance two “A” thick blocks (see Block Height and RakeTable in Leveling the Mower Deck ) under each side of the front edge of the deck, but not underthe anti-scalp roller brackets. 7. Loosen the leveling adjust locking nuts (item 4) on all four corners so that the deck is sittingsecurely on all...
Page 44 - Orient the spring so that the short leg points; The discharge deflector must be
Maintenance Replacing the DischargeDeflector DANGER An uncovered discharge opening could allowthe lawn mower to throw objects in theoperator’s or bystander’s direction and resultin serious injury. Also, contact with the bladecould occur. Never operate the lawn mower unless youinstall a mulch plate, ...
Page 45 - Adjustments; Tracking Adjustment; Cleaning
Maintenance Adjustments Tracking Adjustment If the machine turns right or left when handles arepushed forward together, adjust the tracking plate onthe 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 stra...
Page 46 - 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 47 - 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 48 - 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 50 - 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 51 - Electrical Logic Schematic
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 ...
Page 52 - 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 53 - Service Record
Service Record Date: Description of Work Done: Service Done By: 53
Page 56 - 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...
