Cummins/Onan — Distributor Point Gap Adjustment
Adjustments
From a Cummins/Onan operator's manual — check it applies to your exact model before use.
Applies to: Cummins/Onan EC series
Before you start
- Do not use file, sandpaper, or emery cloth on points.
Procedure
- Crank engine until movable arm rubbing block rests on high point of cam.
- Check gap with 0.025 inch feeler gauge.
- If adjustment needed, loosen point assembly lock screws.
- Insert screwdriver in adjustment slots; set gap to 0.025 inch.
- Tighten lock screws; recheck gap.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 0.025 inch gap
- 0.024-0.026 inch specification
Source: Cummins/Onan 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.