Exmark Lazer Z Air-cooled series Operator's Manual page 28

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.
c) Clean out any grass build-up from underside of deck and in discharge chute.
4.1.5 Check mower blades:
Service Interval: Daily
a) Stop engine, wait for all moving parts to stop, and remove key.
b) Lift deck and secure in raised position as stated in Section 4.1.4.
c) Inspect blades and sharpen or replace as required.
d) Re-install the blades (if they were removed) in the following order (See
Figure 3):
1) Install bushing through blade with bushing flange on bottom (grass)
side of blade.
2) Install bushing/blade combo into spindle.
3) Install blade bolt and spring disc washer. Be sure the spring disc
washer cone is installed towards the bolt head. Place a block of wood
between front or rear baffles and the blade then torque the blade bolts
to 55-60 ft-lbs. (75-81 N-m).
CAUTION
FIGURE 3
BLADE BOLT INSTALLATION
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