Exmark Metro HP Operator's Manual page 26

POTENTIAL HAZARD
♦ Operating a mower deck with loose or weakened
blade bolts can be dangerous.
WHAT CAN HAPPEN
♦ A loose or weakend 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.
h) Remove jack stands (or equivalent support) and lower deck to ground.
5.1.4 Check safety interlock system.
Service Interval: Daily
a) For your safety, your Exmark mower is equipped with Operator Presence
Controls (OPC). When either the PTO is engaged, or the transmission shift
lever is not in neutral and both hands are removed from the handles, the
mower engine MUST stop.
b) Check OPC circuits. Clear the area. Run engine at one-third throttle, then
with drive levers and neutral lock/park brake latches in "park brake"
position, Shift the transmission into gear and release OPC levers – engine
MUST stop.
Again, run engine at one-third throttle, move the transmission shifter lever to
neutral, engage PTO and release OPC levers - engine MUST stop.
c) If machine does not pass any of these tests, DO NOT operate. Contact your
authorized EXMARK SERVICE DEALER.
IMPORTANT: It is essential that all Operator Safety Mechanisms, be in
place and in proper operating condition prior to mowing.
5.1.5 Check for loose hardware.
Service Interval: Daily
a) Stop engine and wait for all moving parts to stop. Remove ignition key or
spark plug wire(s).
CAUTION
FIGURE 11
BLADE BOLT INSTALLATION
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