Caution – Exmark NAV20KC User Manual
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CAUTION
POTENTIAL HAZARD
♦ Raising the mower deck for service or
maintenance relying solely on mechanical
or hydraulic jacks could be dangerous.
WHAT CAN HAPPEN
♦ The mechanical or hydraulic jacks may
not be enough support or may
malfunction allowing the unit to fall, which
could cause injury.
HOW TO AVOID THE HAZARD
♦
DO NOT rely solely on mechanical or
hydraulic jacks for support. Use adequate
jack stands or equivalent support.
e)
Raise the drive wheels off of the ground and support with jack stands (or
equivalent support) just high enough to allow drive wheels to turn freely.
f)
Start engine and move throttle control ahead to full throttle position. Move
the speed control lever 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.
4.1.21 Wheel
Hub – lock nut torque specification
Service Interval: 500 hrs
When tightening the lock nut on the wheel motor tapered shaft:
a)
Torque the lock nut to 125 ft-lbs (169 N-m).
NOTE: Do not use antisieze on wheel hub.
4.1.22 Fuel
Tank – mounting hardware specification
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.
4.1.23
Thread locking adhesives such as “Loctite 242” or “Fel-Pro, Pro-Lock Nut Type”
are used on the following fasteners:
a)
Pump drive sheave set screws.
b)
Square head setscrews on Hydro pump control arms.
c)
Sheave retaining bolt in the end of engine crankshaft, blower shaft and
jackshaft.
d)
Caster wheel spacer nuts
e)
Fuel tank bulkhead fitting nuts.
4.1.24 Dielectric
grease is used on blade type electrical connections to prevent corrosion
and loss of contact. Do not apply grease to sealed connectors inside hopper.