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9. If the axle assembly has had both spacer nuts removed
(or broken loose), apply a thread-locking adhesive
to one spacer nut and thread it onto the axle with
the wrench flats facing outward. Do not thread the
spacer nut all the way onto the end of the axle. Leave
approximately 3 mm (1/8 inch) from the outer surface
of the spacer nut to the end of the axle inside the nut.
10. Insert the assembled nut and axle into the wheel on the
side of the wheel with the new seal and bearing.
11. With the open end of the wheel facing up, fill the area
inside the wheel around the axle full of general-purpose
grease.
12. Insert the second bearing and a new seal into the wheel.
13. Apply a thread-locking adhesive to the 2nd spacer nut
and thread it onto the axle with the wrench flats facing
outward.
14. Torque the nut to 8 to 9 N-m (75 to 80 in-lb), loosen it,
then torque it to 2 to 3 N-m (20 to 25 in-lb). Make sure
that the axle does not extend beyond either nut.
15. Install the seal guards over the wheel hub and insert
the wheel into the caster fork. Install the caster bolt
and tighten the nut fully.
16. Remove the jack stands.
Important: To prevent seal and bearing damage, check
the bearing adjustment often. Spin the caster wheel.
The wheel should not spin freely (more than 1 or 2
revolutions) or have any side play. If the wheel spins
freely, adjust the torque on spacer nut until there is a
slight amount of drag. Apply thread-locking adhesive.
Engine Maintenance
WARNING
Contact with hot surfaces may cause personal
injury.
Keep hands, feet, face, clothing and other body
parts away the muffler and other hot surfaces.
Servicing the Air Cleaner
Service Interval: Every 250 hours—Replace the primary air
filter.
Every 250 hours—Check the secondary air filter.
Every 500 hours—Replace the secondary air filter.
Note: Service the air cleaner more frequently if operating
conditions are extremely dusty or sandy.
Removing the Filters
1. Disengage the PTO, move the motion-control levers to
the neutral-locked position, and set the parking brake.
2. Stop the engine, remove the key, and wait for all moving
parts to stop before leaving the operating position.
3. Push down to release the retaining clamps on the air
cleaner and pull the air cleaner cover off of the air
cleaner body (Figure 42).
4. Clean the inside of the air cleaner cover with
compressed air.
5. Gently slide the primary filter out of the air cleaner
body (Figure 42). Avoid knocking the filter into the
side of the body.
6. Remove the secondary filter only if you intend to
replace it.
Important: Never attempt to clean the secondary
filter. If the secondary filter is dirty, then the
primary filter is damaged and you should replace
both filters.
7. Inspect the primary filter for damage by looking into
the filter while shining a bright light on the outside of
the filter. Holes in the filter will appear as bright spots.
If the filter is damaged discard it.
35
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