Exmark FR20KC, FR27KC Service Interval: Daily aCheck starting circuit, bCheck the kill circuits

4.1.4Check safety interlock system.

Service Interval: Daily

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 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 rise 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.

c)Check the PTO circuit:

See the FR524 and FR604 Operator’s manual to become familiar with the deck operation. Open the folding deck latches, disengage the park brake, move the motion control levers in to neutral, and disengage the PTO.

Lower the deck until the PTO switch arm is no longer depressing the PTO “kill” switch. See Figure 3.

FIGURE 3

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