Hercules G-1600 — Governor Adjustment for Constant Speed
Adjustments
For the Hercules G-1600, from the Hercules service manual.
Before you start
- Do not set the maximum engine speed above that specified by the equipment manufacturer.
Procedure
- With engine stopped, spring (A) holds lever (B) in full throttle position.
- Adjust length of rod assembly (C) to obtain clearance between throttle stop pin and lever on back side of carburetor.
- Start engine, attach speed indicating tachometer, and open throttle while noting engine speed.
- Turn screw (F) in (clockwise) to increase speed, out (counter-clockwise) to decrease engine speed.
- After correct speed is obtained, lock the screw with lock nut (G).
- Adjust spring eye clip and bolt (H) to set governor sensitivity: lengthening distance (I) decreases sensitivity, shortening increases sensitivity.
- Adjust bumper screw (J) to dampen high-speed surging.
- Recheck throttle closed or idle position.
Tools required
- tachometer Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: Hercules service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.