Testing PTO, RIO Switch

CAUTION: The mower blades should stop in approximately five seconds when the mower or PTO is disengaged.

If you believe that your blades may not be stopping in that period of time, take your machine to your authorized dealer where they can safely check and service your machine.


Test 1:

  1. Depress brake pedal, or lock park brake.

  2. Pull PTO/RIO switch up to engage PTO.

  3. Try to start engine.

Result: Engine must not start. If engine starts, there is a problem with your safety interlock circuit.


Test 2:

  1. Start engine.

  2. Unlock park brake and release brake pedal.

  3. Move throttle lever up to maximum engine speed.

  4. Pull PTO/RIO switch up to engage PTO.

  5. Depress brake pedal.

Result: PTO should shut off and engine should continue to run. If PTO continues to run, there is a problem with your safety interlock circuit.

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