Maintenance

10.With the open end of the wheel facing up, fill the area inside the wheel around the axle full of NGLI grade #1 multi-purpose grease.

11.Insert the second bearing and new seal into the wheel.

12.Apply a thread locking adhesive to the 2nd spacer nut and thread onto the axle with the wrench flats facing outward.

13.Torque the nut to 75-80 in-lb (8-9 N-m), loosen, then re-torque to 20-25 in-lb (2-3 N-m). Make sure axle does not extend beyond either nut.

14.Reinstall the seal guards over the wheel hub and insert wheel into caster fork. Reinstall caster bolt and tighten nut fully.

Important: To prevent seal and bearing damage, check the bearing adjustment often. Spin the caster tire. The tire should not spin freely (more than 1 or 2 revolutions) or have any side play. If the wheel spins freely, adjust torque on spacer nut until there is a slight amount of drag. Reapply thread locking adhesive.

1.Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake.

2.Unhook seat latch and tilt seat up.

3.Lubricate bronze bushings on flange bearings securing the motion control arm shafts with a light oil or a spray type lubricant.

Lubricate Motion Control Shaft

Service Interval: Yearly

1.Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake.

2.Tilt seat forward.

3.Remove tab at rear of motion control shaft.

4.Pull motion control shaft out and lubricate with an NGLI grade #2 multi-purpose gun grease.

5.Re-install shaft and tab.

Lubricate Brake Handle Pivot

Service Interval: Every 160 hours

1.Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake.

2.Tilt seat forward.

3.Lubricate bronze bushings on brake handle pivot with a spray type lubricant or light oil.

Lubricate Brake Rod

Bushings

Service Interval: Every 160 hours

1.Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake.

2.Tilt seat forward and raise hood.

3.Lubricate bronze bushings on each end of the brake rod shaft with a spray type lubricant or light oil (bushings are located to the inside of the flange bearings).

Lubricate Motion Control Bronze Bushings

Service Interval: Every 160 hours

Lubricate Steering Linkage Rod Ends

Service Interval: Every 160 hours

1.Stop engine, wait for all moving parts to stop, and remove key. Engage parking brake.

2.Tilt seat forward.

3.Lubricate each end of both steering linkage rods with a spray lubricant or light oil

Check Spark Plugs

Service Interval: Every 160 hours

Remove spark plugs, check condition and reset gaps, or replace with new plugs. See Engine Owner’s Manual.

Change Fuel Filter

Service Interval: As required

A fuel filter is installed between the fuel tanks and the engine. Replace when necessary.

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Exmark 4500-497 manual Lubricate Motion Control Shaft, Lubricate Brake Handle Pivot, Lubricate Brake Rod Bushings