Exmark FR23KC - Manual (Page 35)

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4.1.23 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.
4.1.24 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.
4.1.25 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) Line shaft sheave setscrews.
c) Square head setscrews on Hydro pump control arms.
d) Sheave retaining bolt in the end of engine crankshaft.
e) Caster wheel spacer nuts.
f) Fuel tank bulkhead fitting nuts.
g) Motion control tab retaining bolt.
4.1.26 Dielectric grease is used on blade type electrical connections to prevent corrosion
and loss of contact.
4.2 ADJUSTMENTS
IMPORTANT: Disengage PTO, shut off engine, wait for all moving parts to stop,
engage parking brake, and remove key before servicing, cleaning, or making any
adjustments to the unit.
4.2.1 Pump Drive Belt Tension.
Spring Tensioned - No adjustment necessary.
4.2.2 Pump Drive Belt Replacement.
a) Stop engine, wait for all moving parts to stop, and remove key. Engage
parking brake.
b) Remove pump drive belt.
c) Route new belt onto sheaves as shown in the decal located on the right
hand side of the left hood support. See Figure 6.
FIGURE 6
4.2.3 Park Brake Adjustment.
Check to make sure each brake is adjusted properly.
a) Stop engine, wait for all moving parts to stop, and remove key. Engage
parking brake.
b) Tilt seat forward and raise hood.
c) Pull the brake lever up into the engaged position.