Generac — Spark Plugs (Inspect, Regap or Replace)
Maintenance
From a Generac owner's manual — check it applies to your exact model before use.
Applies to: Generac In Line engine
Procedure
- Clean the area around the base of the spark plugs to keep dirt and debris out of the engine.
- Clean by scraping or washing using a wire brush and commercial solvent; do not blast the spark plugs.
- Remove the spark plugs and check the condition; replace if worn or if reuse is questionable.
- Check the spark plug gap using a wire feeler gauge.
- Adjust the gap to 1.07-1.17 mm (0.042-0.046 inch) by carefully bending the ground electrode.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Spark plug gap 1.07-1.17 mm (0.042-0.046 inch)
Source: Generac 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.