Generac NP-50G — Clean Engine Spark Plug
Maintenance
For the Generac NP-50G, from the Generac owner's manual.
Applies to: Generac NP-50G, Generac GN-410 engine
Before you start
- Sparking can occur if wire terminal does not fit firmly on spark plug terminal end.
Parts for this job
- 72347 Spark plug Amazon eBay $9.99
Part numbers from the service-parts list for Generac NP-50G. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Clean engine spark plug and set gap to 0.030 inch (0.76mm) every 100 hours of operation.
- Clean by scraping or wire brushing and washing with commercial solvent.
- Do not blast clean spark plug.
- Reform wire terminal if it does not fit firmly on spark plug terminal end.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 0.030 inch (0.76mm)
Full service-parts list: Generac NP-50G →
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.