Exmark FMD524 - Manual (Page 28)

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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 of the sharp cutting edges of the
blades.
g) Re-install the blades (if they were removed) by placing a block of wood
between the front or rear baffles and the blade then torquing 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 6.
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 103-0862 –
blade bolt and PN 103-0865 – spring disc washer).
♦
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)
h) Remove jack stands (or equivalent support) and lower deck to ground.
FIGURE 6
BLADE BOLT INSTALLATION
5.1.4 Check safety interlock system.
Service Interval: Daily
a) Check starting circuit. Starter should crank with: Operator Presence
Control levers depressed, speed control lever in neutral, and PTO
disengaged.
Try to start the engine with OPC levers disengaged, speed control lever in
neutral and PTO disengaged - starter MUST NOT crank.
Try to start with, OPC levers depressed, speed control lever in any speed
but neutral and PTO disengaged - starter MUST NOT crank.
DO NOT USE WRENCH HERE.
FOR BLADE INSTALLATION MAINTAIN
140-145 ft-lbs. (190-197 N-m) ON THIS NUT