Exmark Lazer Z Operator's Manual page 34

b) Check the kill circuits. Run engine at one-third throttle, disengage parking
brake and raise off of seat (but do not get off of machine) engine must
stop after approx. 1/2 second has elapsed (seat has time delay kill switch
to prevent cut-outs on rough terrain).
Run engine at one-third throttle, engage PTO and raise off of seat (but do
not get off of machine) engine must stop after 1/2 second has elapsed.
Run engine at one-third throttle, with brake disengaged, move levers in and
raise off seat (but do not get off of machine) engine must stop after 1/2
second has elapsed.
Again, run engine at one-third throttle, brake engaged, and move left
motion control lever in - engine must stop.
Repeat again moving the right lever in, then moving both levers in -
engine must stop whether operator is on seat or not.
NOTE: If machine does not pass any of these tests, do not operate.
Contact your authorized EXMARK SERVICE DEALER.
IMPORTANT: It is essential that operator safety mechanisms be
connected and in proper operating condition prior to use for mowing.
5.1.7 Check rollover protections systems (roll bar) pins
Service Interval: Daily
a) Make sure latch pin and hair pin are fully installed and lanyard is in good
condition.
5.1.8 Check for loose hardware.
Service Interval: Daily
a) Stop engine, wait for all moving parts to stop, and remove key.
b) Visually inspect machine for any loose hardware or any other possible
problem. Tighten hardware or correct the problem before operating.
5.1.9 Service air cleaner.
a) Stop engine, wait for all moving parts to stop, and remove key.
b) Loosen retaining clips and remove air cleaner compartment cover.
c) Remove paper element. Check the condition of the paper element.
Replace if dirty, bent or damaged.
d) Check the condition of the inner element. Replace whenever it appears
dirty, typically every other time the paper element is replaced. Clean the
base around the inner element before removing, so dirt does not get into
the engine.
e) DO NOT wash or use pressurized air to clean paper element or inner element.
f) Reinstall elements. Position the cover so that the rubber dust ejector is
pointing downward and secure with retaining clips.
Service Interval: 50 hrs.
More often under severe conditions.
See Engine manual for additional information.
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