Exmark Lazer Z User Manual
Page 41
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5.1.25
Wheel hub - slotted nut torque specification.
Service Interval: 500 hrs
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” (.25 cm)) or less should be showing.
c) If more than two threads (0.1” (2.5 mm)) 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 nut until the next set of slots line up with the cross hole in shaft.
f) Replace cotter pin.
Note: Do not use antisieze on wheel hub.
5.1.26
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.
5.1.27 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.
d)
Engine mount retaining bolts.
e)
Stub shaft-to-flywheel retaining bolts.
f)
Front engine crankshaft hub retaining bolts.
g)
Fuel tank bulkhead fitting threads.
h)
Caster wheel spacer nuts.
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.
5.1.28
Mobil HTS grease (or a food-grade antisieze) is used in the following locations:
a)
Between the jackshaft and bearings
b)
Between the jackshaft and sheaves.
c)
Between the cutter housing spindle and bearings.
d)
Between the cutter housing spindle and sheaves.
e)
Under top cutter housing bearing guard.
f)
On the fan pump shafts and motor shafts next to the seal.
5.1.29
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 and remove key before servicing,
cleaning or making any adjustments to the unit.
5.2.1
Cutting Height Adjustment.
a)
Stop machine and move drive levers out to neutral lock position.
b)
Disengage PTO.
c)
Raise the deck lever to the transport position (also the 5” (12.7 cm) cutting
height position). See Figure 11.