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10
GREASE FITTING LUBRICATION CHART
FITTING
LOCATIONS
INITIAL
PUMPS
NO. of
PLACES
SERVICE
INTERVAL
1. Drive Shaft 1 3 40 hours
2. Front Caster Wheel Hub 1 2 8 hours
3. Deck Flip-Up
1 4 100 hours
4. Push Arm Tubes
1 2 100 hours
5. Caster Pivots *0 3 *yearly
∗ See Section 4.2.5 c) for special lubrication instructions on
the front caster pivots and Section 5.2.6 for special
lubrication instructions on the rear caster wheel hub.
c) Lubricate caster pivots once a year. Remove hex plug
and cap. Thread grease zerk in hole and pump with
grease until it oozes out around top bearing. Remove
grease zerk and thread plug back in. Place cap back on.
4.2.6 Lubricate caster wheel hub:
Service Interval: Once Yearly
a) Stop engine, wait for all moving parts to stop,
and remove key.
b) Remove caster wheel from caster forks.
c) Remove seal guards from the wheel hub.
d) 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.
e) Pry out seals, and inspect bearings for wear or
damage and replace if necessary.
f) Pack the bearings with a NGLI grade #1 multi-purpose grease.
g) Insert (1) bearing, (1) new seal into the wheel.
NOTE: Seals (Exmark PN 103-0063) must be replaced.
h) If the axle assembly has had both spacer nuts removed (or broken loose), apply
a thread locking adhesive to (1) 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” (3 mm) from the outer surface of the
spacer nut to the end of the axle inside the nut.
i) Insert the assembled nut and axle into the wheel on the side of the wheel with
the new seal and bearing.
j) 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.
k) Insert the second bearing and new seal into the wheel.
l) Apply a thread locking adhesive to the 2
nd
spacer nut and thread onto the axle
with the wrench flats facing outward.
m) Torque the nut to 75-80 in-lbs. (8-9 N-m), loosen, then re-torque to 20-25 in-lbs.
(2-3 N-m). Make sure axle does not extend beyond either nut.
FIGURE 8
CASTER WHEEL ASSEMBLY