Adjustments - Exmark Laser Z CT Operator's Manual

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.
5.1.24 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.
5.1.25 Fuel Tank – mounting hardware specification.
When installing the nuts onto 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.
5.1.26 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) Clutch retaining bolt in the end of engine crankshaft.
d) Caster wheel spacer nuts.
e) Fuel tank bulk head fitting nuts.
f) Cutter housing spindle nut
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) Fuel tank studs where studs are inserted into tank.
5.1.27 Mobil HTS grease (or food-grade antisieze) is used in the following locations:
a) Between the cutter housing spindle and bearings.
b) Between the cutter housing spindle and sheave.
c) Under top cutter housing bearing guard.
5.1.28 Dielectric grease is used on all blade type electrical connections to prevent
corrosion and loss of contact.

5.2 ADJUSTMENTS

IMPORTANT: Disengage PTO, shut off engine, wait for all moving parts to stop,
and remove key before servicing, cleaning or making adjustments to the unit.
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