Generac NP-30G — Engine Spark Plug Service
Maintenance
For the Generac NP-30G, from the Generac owner's manual.
Applies to: Generac NP-30G, Generac GN-220 engine
Before you start
- DO NOT BLAST CLEAN SPARK PLUG
Parts for this job
- 72347 Spark plug Amazon eBay $9.99
Part numbers from the service-parts list for Generac NP-30G. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Clean or replace engine spark plug and set gap to 0.030 inch (0.76mm).
- Clean by scraping or wire brushing and washing with commercial solvent.
- Reform wire terminal if it does not fit firmly over spark plug terminal end.
Specs & values
- Spark plug gap 0.030 inch (0.76mm)
- Every 100 hours of operation
Full service-parts list: Generac NP-30G →
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.