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5.1.3 Clean grass build-up under deck and check mower blades.
Service Interval: Daily
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 misfunction 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.
a) Disengage PTO.
b) Stop engine and wait for all moving parts to stop. Remove ignition key or
spark plug wire(s).
c) Raise deck and block up using proper safety precautions.
d) Clean out any grass build-up from underside of deck and in deck discharge
chute.
e) Inspect blades and sharpen or replace as required.
f) If blade removal is necessary, be careful for the sharp cutting edges of the
blades.
g) Re-install the blades (if they were removed) and torque blade bolts to 115-
120 ft. lbs. Be sure the spring disc washer cone is installed toward the bolt
head (See Figure 8).
CAUTION
POTENTIAL HAZARD
♦ Operating a mower deck with loose or weakened
blade bolts can be dangerous.
WHAT CAN HAPPEN
♦ A loose or weakened blade bolt could allow a blade
rotating at a high speed to come out from under the
deck, causing serious injury or property damage.
HOW TO AVOID THE HAZARD
♦ Replace the blade bolt after striking a foreign object.
(Use only Exmark replacement parts PN 103-1026 -
blade bolt and PN 1-513208 – spring disc washer).
♦ DO NOT lubricate the threads of the bolt or spindle
before assembly.
♦ Torque the blade bolt to 115-120 ft. lbs.
g) Remove jack stands (or equivalent support) and lower deck to ground.