Generac Impact-36G / NP-36G — Clean and Gap Spark Plug

Maintenance · Engine spark plug

For the Generac Impact-36G / NP-36G, from the Generac owner's manual.

Applies to: Generac GN-220 engine

Before you start

DO NOT BLAST CLEAN SPARK PLUG
Sparking can occur if wire terminal does not fit firmly over spark plug terminal end

Procedure

Remove spark plug.
Clean by scraping or wire brushing and washing with commercial solvent.
Set gap to 0.030 inch (0.8mm).
Reinstall plug and press boot on securely.

Tools required

Feeler gauge Amazon
Wire brush Amazon

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Specs & values

Gap 0.030 inch (0.8mm)
Every 100 hours of operation

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.

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