International — Constant speed governor adjustment (C-549 engines)
Adjustments
From a International owner's manual covering: C-152, C-196, C-304, C-345, C-392, C-446, C-537, C-605. Check it applies to your exact model before use.
Applies to: International C 549 engine
Before you start
- Do not allow governor spring to twist, otherwise damage to spring may result
- Do not use the bumper screw for speed adjustment
Procedure
- Adjust speed control screw to dimension A (approximately 7/8 in) by turning speed control nut; hold screw from turning.
- Adjust throttle rod: with governor lever in the weights-closed position, rod should just hold throttle lever wide open against internal stop; then shorten rod 1-1/2 to two turns.
- Tighten rod locknuts; check for binding in both ball joints.
- Set speed regulation adjustment screw to dimension B (approximately 1/2 in).
- Set high idle by turning the speed control nut to produce the required high idle speed; dampen surge with bumper screw if needed.
- Load engine to maximum rated power; adjust speed control nut to attain rated power speed.
- Remove load and note high idle speed; back out or turn in speed regulation screw to correct regulation.
- Load engine to maximum rating and reset speed nut if required; run engine through varying step load values.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Dimension A approximately 7/8 in
- Dimension B approximately 1/2 in
Source: International owner's 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.