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Maintenance
Change Fuel Filter
Service Interval: As required
A fuel lter is installed between the fuel tanks and the
engine. Replace when necessary.
Replacement Filters
Kohler
Kohler P/N 2405010
Change Hydraulic System
Filter
Service Interval: After the rst 250 hours
Yearly thereafter
Note: Use only Exmark Part No. 109-4180 for
summer use above 32°F (0°C) or Part No. 1-523541
for winter use below 32°F (0°C).
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Raise seat.
3. Carefully clean area around lter. It is important
that no dirt or contamination enter hydraulic
system.
4. Unscrew lter to remove and allow oil to drain
from reservoir.
Important: Before reinstalling new lter, ll
it with Mobil 1 15W-50 and apply a thin coat
of oil on the surface of the rubber seal.
Turn lter clockwise until rubber seal contacts the
lter adapter, then tighten the lter an additional
2/3 to 3/4 turn.
5. Fill reservoir as stated in Check Hydraulic Oil
Level section.
6. Raise the rear of machine up and support with
jack stands (or equivalent support) just high
enough to allow drive wheels to turn freely.
7. 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.
Note: Do Not change hydraulic system oil (except
for what can be drained when changing lter), 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.
Wheel Hub - Slotted Nut
Torque Specication
Service Interval: After the rst 100 hours
Every 500 hours thereafter
When tightening the slotted nut on the wheel motor
tapered shaft:
1. Torque the slotted nut to 125 ft-lb (169 N-m).
2. Check distance from bottom of slot in nut to
inside edge of hole. Two threads (0.1 inch) or less
should be showing.
3. If more than two threads (0.1 inch) are showing
remove nut and install washer (P/N 1-523157)
between hub and nut.
4. Torque the slotted nut to 125 ft-lb (169 N-m).
5. Then tighten nut until the next set of slots line up
with the cross hole in shaft.
6. Replace cotter pin.
Note: Do Not use anti-seize on wheel hub.
Fuel Tank — Mounting
Hardware Specications
Service Interval: As required
When installing the nuts on the fuel tank studs, fully
tighten the nyloc nut and back off 1/2 turn. This
allows for normal fuel tank expansion and contraction
with changes in temperature and fuel levels.
Thread Locking Adhesives
Thread locking adhesives such as “Loctite 242”
or “Fel-Pro, Pro-Lock Nut Type” are used on the
following fasteners:
• Pump drive sheave set screws.
• Square head setscrews on Hydro pump control
arms.
• Sheave retaining bolt in the end of engine
crankshaft.
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