Exmark TT4817KAC - Manual (Page 36)

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a) Stop engine and wait for all moving parts to stop. Remove ignition key or
spark plug wire(s).
b) Remove cooling shrouds from engine and clean cooling fins. Also clean dust,
dirt, and oil from external surfaces of engine, which can cause improper
cooling.
c) Make sure cooling shrouds are properly reinstalled. Operating the engine
without cooling shrouds will cause engine damage due to overheating.
5.1.17 Change fuel filter.
Service Interval: As Required
a) A fuel filter is installed in the fuel line between the fuel tank and the engine.
Replace when necessary.
5.1.18 Refer to Engine Operators Manual for detailed maintenance regarding the engine.
5.1.19 Wheel hub - slotted nut torque specification.
When tightening the slotted nut on the wheel motor tapered shaft:
a) Torque the slotted nut to 100 ft. lbs.
b) Further tighten the nut until the next set of slots line up with the cross hole in
the shaft.
c) Replace cotter pin.
5.1.20 Thread locking adhesives such as “Loctite 242” or “Fel-Pro, Pro-Lock Nut-Type”
are used on the following fasteners:
a) Pump drive sheave setscrews.
b) Square head setscrews on Hydro pump control arms.
c) OPC lever setscrews.
d) Sheave retaining bolt in end of engine crankshaft.
e) Lower Sheave retaining bolt on clutch arm.
f) Shoulder bolts in ends of speed control crank.
Adhesives such as “Loctite RC/609 or RC/680” or “Fel-Pro Pro-Lock Retaining I or
Retaining II” are used on the following:
a) OPC lever hubs and cross-shaft
NOTE: Care must be used not to bond the bearing, next to each OPC hub,
to the cross shaft which could cause binding of the OPC levers and erratic
operation.
5.1.21 An anti-seize compound is used on the following locations:
a) Between engine crankshaft and pump and blade drive sheaves.
b) On clutch arm assembly between bearings and shaft and between lower
sheave and shaft.
c) Between pump shafts and sheaves.
5.1.22 Dielectric grease is used on all blade type electrical connections to prevent
corrosion and loss of contact.
5.1.23 Check battery charge: (Electric start units only)
Service Interval: Monthly
Allowing batteries to stand for an extended period of time without recharging
them will result in reduced performance and service life. To preserve optimum
battery performance and life, recharge batteries in storage when the open circuit
voltage drops to 12.4 volts.