Generac QT 6.8L 70kW — Spark Plugs — Reset Gap or Replace
Maintenance
For the Generac QT 6.8L 70kW, from the Generac owner's manual.
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Before you start
- Do not blast the spark plugs to clean.
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 to clean.
- 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 1.14 mm (0.045 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 1.14 mm (0.045 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.