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2. Remove caster wheel from caster forks.
3. Remove seal guards from the wheel hub.
4. Remove one of the spacer nuts from the axle
assembly in the caster wheel. Note that thread
locking adhesive has been applied to lock the
spacer nuts to the axle. Remove the axle (with the
other spacer nut still assembled to it) from the
wheel assembly.
5. Pry out seals, and inspect bearings for wear or
damage and replace if necessary.
6. Pack the bearings with a NGLI grade #1
multi-purpose grease.
7. Insert one bearing, one new seal into the wheel.
Note: Seals (Exmark P/N 103-0063) must be
replaced.
8. If the axle assembly has had both spacer nuts
removed (or broken loose), apply a thread locking
adhesive to one spacer nut and thread onto the
axle with the wrench flats facing outward. Do
Not thread spacer nut all of the way onto the end
of the axle. Leave approximately 1/8 inch (3 mm)
from the outer surface of the spacer nut to the
end of the axle inside the nut.
9. Insert the assembled nut and axle into the wheel
on the side of the wheel with the new seal and
bearing.
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.
Lubricate Deck Lift Pivot
Service Interval: Every 100 hours
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Lubricate deck lift pivot with a spray type
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.
Check LPG Tank
Service Interval: Before each use or daily
Check the LPG tank and components for wear or
leaks. Follow all the inspection checks as specified in
the Inspection section in Safety.
Check LPG Fuel Delivery
System
Service Interval: Every 40 hours
Check the entire LPG fuel delivery system for damage
or deterioration. Follow all the inspection checks as
specified in the Inspection section in Safety.
Change LPG Tank
Service Interval: As required
Change the LPG tank outdoors in a well ventilated
area.
1. Stop the machine on level ground, disengage the
PTO, and engage the parking brake.
2. Close the fuel valve on the tank.
3. Purge all vapors from the hose, by running the
engine until it stops, turn key to "OFF" and
remove it from the ignition.
4. Carefully disconnect the LPG fuel hose.
5. Unlatch the cylinder brackets and remove the
tank.
39
Maintenance
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