Exmark Turf Tracer Operator's Manual page 25

IMPORTANT: DO NOT use components other than the original blade, blade
bushing, spring disc washer, and blade bolt supplied with the unit. Failure to use
all original components and assembled as shown will increase the risk of a blade
bolt becoming loose or weak after striking a foreign object.
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
♦ Always re-install original Exmark blades, blade bushings,
spring disc washers, and blade bolts in the correct
positions as shown.
4.1.5 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.
Try to start with OPC levers depressed, speed control lever in neutral and
PTO engaged - starter MUST NOT crank.
b) Check OPC circuits. Clear the area. Run engine at one-third throttle, then,
with drive levers and neutral lock latches in neutral lock position, move the
speed control lever out of neutral and release OPC levers engine MUST
stop. Again, run engine at one-third throttle, move the speed control lever
to neutral, engage PTO and release OPC levers - engine MUST stop.
FIGURE 6
BLADE BOLT INSTALLATION
(Serial Nos. 540,000 and higher)
CAUTION
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