Exmark 4500-367 manual Pre-Start, Operating Instructions

Page 17

Operation

Drive Wheel Release Valves

Located on the top left front corner of hydrostatic pumps.

Drive wheel release valves are used to release the hydrostatic drive system to allow the machine to be pushed without the engine running. Tilt seat up to gain access to pumps.

With a 7/16 wrench, turn both valves one turn counterclockwise to release drive system. Turn clockwise to reset system. Do Not overtighten. Do

Not tow machine.

Tracking Adjustment Knob

Located under the seat on the left pump control link.

Rotating this knob allows fine tuning adjustments so that the machine tracks straight with the drive levers in the full forward position.

Run unit at 3/4 speed for at least 5 minutes to bring hydraulic oil up to operating temperature. Stop machine and wait for all moving parts to stop. Engage park brake. Tilt seat forward to gain access to the tracking knob. Rotate the knob towards the right to steer right and rotate towards the left to steer left. Adjust in 1/8 turn increments until the machine tracks straight. Check that the machine does not creep when in neutral with the park brakes disengaged.

Important: Do Not rotate the knob too far, as this may cause the machine to creep in neutral. Refer to the Motion Control Linkage Adjustment section in Maintenance.

PTO Engagement Lever

Located immediately left of the left console.

Lever must be moved up to the “ROTATE” position to engage the PTO and blower drives. Lever is moved down to the “STOP” position to stop the drives.

Engine Oil Temperature Light and Buzzer

Located on the right console.

The engine oil temperature light monitors the temperature of the engine oil. An illuminated engine oil temperature light and intermittent buzzing sound signals the engine is overheating.

Pre-Start

Fill fuel tanks. For best results use only clean, fresh regular grade unleaded gasoline with an octane rating of 87 or higher. Regular grade leaded gasoline may also be used; however, combustion chamber and cylinder head will require more frequent service. See Engine Owner’s Manual.

Do Not add oil to gasoline.

Do Not overfill fuel tank. Never fill the fuel tank so that the fuel level rises above a level that is 1/2 inch (13 mm) below the bottom of the filler neck to allow for fuel expansion and prevent fuel spillage.

Make sure you understand the controls, their locations, their functions, and their safety requirements.

Refer to the Maintenance section and perform all the necessary inspection and maintenance steps.

Operating Instructions

Open the Fuel Shut-Off Valve

The fuel shut-off valve is located on the right side of unit in fuel line next to the fuel filter. Raise the hopper to access. Rotate the valve 1/4 counterclockwise to turn on fuel.

Starting the Engine

1.Move the speed control lever to the neutral position.

2.Pull up and back on the parking brake lever to engage the parking brake.

3.Push the PTO engagement lever down to the “STOP” position.

Note: It is not necessary for the operator to be in the seat to start the engine.

4.Place the throttle midway between the “SLOW” and “FAST” positions.

5.On a cold engine, push the choke lever forward into the “ON” position.

On a warm engine, leave the choke in the “OFF” position.

6.Turn ignition switch to the “START” position. Release the switch as soon as the engine starts.

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Contents Navigator California Introduction Contents Safety Alert Symbol SafetySafe Operating Practices TrainingSafety Operation Slope Operation Maintenance and Storage Safety and Instructional Decals 103-9034 103-9724 109-4273 109-4638 109-7318 116-0404 116-1175 Molded in LH Console Molded into Front of Hopper Systems SpecificationsModel Numbers Dimensions Torque Requirements Curb WeightProduct Overview Controls OperationOperating Instructions Pre-StartDisengaging the PTO Engaging the PTOStopping the Engine Driving the MachineEmptying Hopper TransportingClearing Hopper Screen Transporting a UnitLoading a Unit Recommended Maintenance Schedules MaintenanceCheck Engine Oil Level Check Battery ChargeService Air Cleaner Check Safety Interlock SystemCheck for Loose Hardware Change Engine OilCheck Tire Pressures Check Hydraulic Oil LevelCheck Condition Of Belts Lubricate Grease FittingsLubricate Rear Caster Wheel Hubs Service Interval YearlyLubricate Brake Rod Bushings Lubricate Brake Handle PivotLubricate Steering Linkage Rod Ends Lubricate Hopper ActuatorChange Hydraulic System Filter PTO Belt Replacement Fuel Tank Mounting Hardware SpecificationsCheck Wheel Hub Locknuts Check Wheel Lug NutsBelt Guide Adjustment Pump Drive Belt ReplacementAdjust Speed Control Lever Tension Adjust Safety SwitchBrake Adjustment Speed Control Linkage Adjustment Steering Control Lever Response AdjustmentPump Drive Pulley Alignment Tracking AdjustmentPTO Drive Pulley Alignment PTO Brake Spring Adjustment Rear Caster Pivot Bearings Pre-Load AdjustmentHopper Door Adjustment Remove Engine Shrouds and Clean Cooling Fins Clean Engine and Exhaust System AreaClean Debris From Machine Waste DisposalProblem Possible Cause Corrective Action TroubleshootingTroubleshooting Electrical Diagram SchematicsStart Electrical Logic SchematicHydraulic Diagram Exmark Commercial Turf Equipment Page Page See EXMARK’S Complete Line of Accessories and Options