Exmark Lazer Z HP Operator's Manual page 29

POTENTIAL HAZARD
♦ Incorrect installation of the blade or
WHAT CAN HAPPEN
♦ Failure to use all original components and
HOW TO AVOID THE HAZARD
♦ Always install the original Exmark blades,
4.1.6 Check safety interlock system.
a) Check starting circuit. Starter should crank with parking brake engaged,
PTO 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.
Try to start with operator in seat, parking brake disengaged, PTO
disengaged and motion control levers in the neutral lock position - starter
must not crank.
Try to start with operator in seat, parking brake engaged, PTO engaged and
motion control levers in the neutral lock position - starter must not crank.
Try to start with operator in seat, parking brake engaged, PTO
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.
b) Check 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
initiate shutdown 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 initiate shutdown 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 initiate
shutdown after 1/2 second has elapsed.
Again, run engine at one-third throttle, brake engaged, and move left
motion control lever in - engine must initiate shutdown.
Repeat again moving the right lever in, then moving both levers in -
engine must initiate shutdown 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.
WARNING
components used to retain the blade can be
dangerous.
assembled as shown could allow a blade or
blade component to be thrown out from
under the deck resulting in serious personal
injury or death.
blade bushings, spring disc washers, and
blade bolts as shown.
Service Interval: Daily
24