SAFETY
Testing the Safety Interlock System (continued) Tests 5-9 test the ‘Engine Run’ function. For each test, start the power unit so that the engine is running. As listed for each test, engage or disengage the parking brake*, place the SDLA in neutral or out of neutral^, and sit on the seat or raise your body weight from the seat. The engine should continue running or stop running as described for each test.
Test Number
Parking Brake* Engaged
Forward/Reverse Control (SDLA) in Neutral^
Operator Present in Seat
Engine Runs
5 6 7 8 9
Yes Yes Yes Yes No
Yes Yes No No Yes
Yes No No Yes No
Yes Yes No No No
Engine Run
Tests 10-13 test the ‘PTO’ function. For each test, turn the ignition key to the RUN position (do not start the engine). As listed for each test, place the PTO switch in the On or OFF position and sit on the seat or raise your body weight from the seat. The electric PTO clutch will make an audible noise when it engages or disengages.
Test Number
PTO Switch
Operator Present in Seat
PTO Clutch
10 11 12 13
Off
Yes No Yes
Off No Yes
Pull to ‘On’ Position Pull to ‘On’ Position
PTO
On PTO Disengages (1/2 second delay) If the power unit fails any one of the safety interlock tests, the issue must be corrected before operating the power unit. *This tests the function of the parking brake switch. The parking brake handle should be engaged the minimum amount necessary to activate the parking brake indicator light on the information gauge. Neutral assist must be off. Raise Operator Body Weight from Seat ^This tests the function of the neutral switch located on the hydraulic pump. Depending on settings and the age of the power unit, the range for neutral for the SDLA control may vary. For this test, the SDLA lever should move 2.5 cm (1 inch) or less forward or backward for neutral switch activation (measured at the top of the lever).
Safety - 17
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