Exmark Lazer Z Operator's Manual page 33

d) Re-install the blades (if they were removed) by placing a block of wood
between the front or rear baffles and the blade then torque the blade bolts
to 115-120 ft-lbs. (156-163 N-m). Be sure the spring disk washer cone is
installed toward the bolt head (See Figure 7).
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 the following replacement parts:
Blade bolt – PN 103-0862
Spring disc washer – PN 103-0865
DO NOT lubricate the threads of the bolt or spindle before
assembly.
Torque the blade bolt to 115-120 ft. lbs. (156-163 N-m)
5.1.6 Check safety interlock system.
Service Interval: Daily
a) Check starting circuit. Starter should crank with, parking brake engaged,
PTO disengaged and motion control levers moved out in the neutral lock
position. The operator does not need to be in the seat to start the engine.
Try to start with operator in seat, parking brake disengaged, PTO
disengaged and motion control levers in the neutral lock position - starter
must not crank.
Try to start with operator in seat, parking brake engaged, PTO engaged and
motion control levers in the neutral lock position - starter must not crank.
Try to start with operator in seat, parking brake engaged, PTO
disengaged, and the left motion control lever in, starter must not
crank, repeat again with the right lever in, then with both levers in -
starter must not crank.
CAUTION
TORQUE TO
115-120 ft-lbs.
(156-163 N-m)
FIGURE 7
BLADE BOLT INSTALLATION
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