Detroit Diesel — Adjust Buffer Screw
Adjustments · Governor
From a Detroit Diesel operator's manual — check it applies to your exact model before use.
Procedure
- With engine running at normal operating temperature, turn buffer screw in until it contacts differential lever as lightly as possible and eliminates engine roll.
- Do not increase idle speed more than 15 rpm.
- Recheck maximum no-load speed; if increased more than 25 rpm, back off buffer screw.
- Hold buffer screw and tighten lock nut.
Specs & values
- Idle increase ≤15 rpm; max no-load increase ≤25 rpm
Source: Detroit Diesel operator'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.