Fuel System Operation and Tests
CHECK FAST IDLE SPEED--IN-LINE FUEL
1. Remove speed control rod. With the engine running,
move governor control lever (A) against the fast idle
stop screw (B).
NOTE: The governor control lever on injection pump may
be inboard (next to engine block) or outboard
(away from engine block), depending upon engine
2. Using a tachometer, check fast idle speed to see if it is
A--Governor Control Lever
B--Fast Idle Stop Screw
IMPORTANT: If fast idle speed must be adjusted, see
your authorized diesel repair station.
NOTE: For each application, refer to the appropriate
machine technical manual for fast idle speed
NOTE: For some applications such as generator sets,
special equipment may be required for fast idle
adjustment in conjunction with droop adjustment.
See your OEM dealer or John Deere Engine