Generac 004583-0 — Replacing the Spark Plug

Maintenance · Engine

For the Generac 004583-0, from the Generac owner's manual.

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Procedure

Stop engine and pull spark plug wire off spark plug.
Clean area around spark plug and remove it from cylinder head.
Set spark plug gap to 1.01 mm (0.040 in.).
Install correctly gapped spark plug into cylinder head.

Tools required

Spark plug wrench Amazon

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

Specs & values

Champion RC14YC Amazon eBay $10.00 NAPA $4.94 or equivalent
Gap 1.01 mm (0.040 in.)

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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