Exmark 4500-450 - Manuals

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...

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...

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...

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...

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...

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...

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...

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 “...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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. ...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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 ...

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...

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...

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...

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...

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, ...

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...

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...

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...

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...

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...

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 ...

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...

Service Record Date: Description of Work Done: Service Done By: 53

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...