Is you know how to adjust the air governor it is easy to do. But if you never did it it can be very tricky and long to explain ober e-mail's your best think to do since you want fix your lift is to invest in a repair manuel. For adjusting the governor you need the 4Y engine repair manuel.
There a two adjustment on the governor fast idle 2600 rpm and loaded 2400 rpm. The round **** is for the 2600 rpm and the screw is for the 2400 rpm. good luck
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