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4.1.21 Check spark plug
:
Service Interval: 160 hrs.
a) Remove spark plug, check condition and reset gap, or replace with new
plug. See Engine Owners Manual.
4.1.22 Change fuel filter
:
Service Interval: As Required
a) A fuel filter is installed between the fuel tanks and the engine. Replace
when necessary.
For Kohler engines use Kohler P/N 2405002.
For Kawasaki engines use Kawasaki P/N 49019-7001
4.1.23 Change hydraulic system filter
:
Service Interval: After First 250 hrs.
Then yearly thereafter
NOTE: Use only Exmark Part No. 1-513211 for Summer use above
32° F
(0°C) or Part No. 1-523541 for Winter use below 32°
F (0°C).
a) Stop engine, wait for all moving parts to stop, and remove key.
b) Locate filter under right rear corner of engine deck.
c) Carefully clean area around filter. It is important that no dirt or
contamination enter hydraulic system.
d) Unscrew filter to remove and allow oil to drain from reservoir.
IMPORTANT: Before reinstalling new filter, fill it with Mobil 1 15W-50 and
apply a thin coat of oil on the surface of the rubber seal.
Turn the filter clockwise until rubber seal contacts the filter adapter then
tighten the filter an additional 2/3 to 3/4 turn.
e) Fill reservoir as stated in Section 4.1.10.
f) Raise the rear of machine up and support with jack stands (or equivalent
support) just high enough to allow drive wheels to turn freely.
g) Start engine and move throttle control ahead to full throttle position. Move
the speed control levers to the full speed and run for several minutes. Shut
down machine and recheck oil level.
Do not change hydraulic system oil (except for what can be drained when
changing filter), unless it is felt the oil has been contaminated or been
extremely hot.
Changing oil unnecessarily could damage hydraulic system by
introducing contaminates into the system.
4.1.24 Wheel hub
- slotted nut torque specification
When tightening the slotted nut on the wheel motor tapered shaft:
a) Torque the slotted nut to 125 ft. lbs (169 N-M).
b) Check distance from bottom of slot in nut to inside edge of hole. Two
threads (0.1”) or less should be showing.
c) If more than two threads (0.1”) are showing remove nut and install washer
(PN 1-523157) between hub and nut.
d) Torque the slotted nut to 125 ft. lbs (169 N-M)
e) Then tighten the nut until the next set of slots line up with the cross hole in
the shaft.
f) Replace cotter pin.
Note: Do not use antiseize on the wheel hub.