To decrease governor cutoff rpm, shims are removed from governor spring pack.
To increase rpm, shims are added. Each 0.001 in. thickness of shim will change
the governor cutoff speed approximately 2 rpm. Shims are available in 0.005,
0.010, and 0.020 in. (0.127, 0.254, and 0.508 mm) thicknesses. If over 0.150 in.
(3.81 mm) of shim thickness is required to be added, replace governor spring.
Shims are to be placed between governor spring and spring retainer.
(e) Remove spring retainer and remove or ins tall (as required) shims.
(f) Reinstall spring retainer and secure with retaining ring.
(g) Reinstall governor spring pack cover.
(5) Purge fuel pump of air as initially done during pump run-in.
(6) Recheck governor cutoff rpm.