VALVE GP-SOL 5242039 - Caterpillar

The machine may lurch forward if the neutral start switch is out of adjustment. Be sure the area is clear of all personnel and equipment before performing this test.
Illustration 1 g00642400
Depress the parking brake knob (1) .
Illustration 2 g00642403
Move the propel lever to the FORWARD position. Hold the engine start switch (2) in the START position. Slowly move the propel lever (3) toward the NEUTRAL position.
If the engine starts before you move the propel lever to the NEUTRAL position, the neutral start switch requires adjustment. Do not operate the machine until the repairs have been made. Consult your Caterpillar dealer for instructions.