Exmark Lazer HP - Manual (Page 36)

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5.1.7 Check safety interlock system.
Service Interval: Daily
For Kohler units with Serial Nos. 251,999 and Lower and all 22 & 23 HP
Kawasaki Liquid-cooled units:
a) Check starting circuit. Starter should crank with operator in seat, parking
brake engaged, cutting blades disengaged and motion control levers moved
out in the neutral lock position.
Try to start with operator out of seat, parking brake engaged, blades
disengaged and motion control levers in neutral lock position - starter must
not crank.
For Air-cooled units Serial Nos. 252,000 and Higher and 27 HP Kawasaki units:
b) Check starting circuit. Starter should crank with, parking brake engaged,
cutting blades disengaged and motion control levers moved out in the neutral
lock position. The operator does not need to be in the seat to start the engine.
For All units:
Try to start with operator in seat, parking brake disengaged, blades
disengaged and motion control levers in the neutral lock position - starter
must not crank.
Try to start with operator in seat, parking brake engaged, blades
engaged and motion control levers in the neutral lock position - starter
must not crank.
Try to start with operator in seat, parking brake engaged, blades
disengaged, and the left motion control lever in, starter must not
crank, repeat again with the right lever in, then with both levers in -
starter must not crank.
c) 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 cutting blades and raise off of seat
(but do not get off of machine) engine must stop after1/2 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.
5.1.8 Check for loose hardware.
Service Interval: Daily
a) Stop engine and remove key.
b) Visually inspect machine for any loose hardware or any other possible
problem. Tighten hardware or correct the problem before operating.