red side

Incorrect idle or maximum speed

Incorrect Idle or Maximum Speed

Possible Cause


Possible Remedy

Low idle misadjusted


Readjust idle stop screw

Maximum speed misadjusted


Readjust maximum speed screw

Cold-start device malfunction


Check cold-start mechanism

Overflow fitting interchanged with inlet fitting


Install fittings in their proper positions

Fuel injection pump defective or cannot be adjusted


Remove pump and service


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