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a) Disengage blades.
b) Stop engine and remove spark plug wire(s).
c) Raise deck, support properly using safety precautions.
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 for the sharp cutting edges of the
blades.
g) Re-install the blades (if they were removed) and torque blade bolts to 75-80
ft/lbs. Be sure the spring disc washer cone is installed toward the bolt head
(See Figure 14).
h) Remove jack stands (or equivalent support) and lower deck to ground.
FIG. 14
BLADE BOLT INSTALLATION
5.1.4 Check safety interlock system.
Service Interval: Daily
a) For your safety, your Exmark mower is equipped with Operator Presence
Controls, referred to as (OPC). When either the mower blades are engaged,
or the transmission shifter lever is not in neutral and the operator removes
both hands from the handles, the mower engine
must stop
.
b) To determine if the OPC is in operating condition, clear area of bystanders.
Run the engine at one-third throttle, then with the drive levers and neutral lock
latches in the
“park brake”
position
, shift the transmission into gear and
release the OPC levers –
the engine MUST stop
.
Again, run the engine at one-third throttle, move the transmission shifter lever
to neutral, engage the blade clutch and release the OPC levers -
the engine
MUST stop
.
If the mower engine does not stop under any of the above mentioned
conditions, 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 Brake and Wheel Drive Linkage Adjustment.
Service Interval: Daily
Refer to Sections 3.8.5 and 3.8.6
. Note any bent linkage or hardware which
may need servicing or replacing.