Generac IQ3500 / iQ3500 — Service Spark Plug
Maintenance
For the Generac IQ3500 / iQ3500, from the Generac owner's manual.
Applies to: Generac IQ3500, Generac iQ3500 engine
Before you start
- Replace spark plug if electrodes are pitted, burned, or porcelain is cracked
Parts for this job
- 0J00620106 Spark plug Amazon eBay $35.00 NAPA $2.82 FridayParts $32.07
Part numbers from the service-parts list for Generac IQ3500. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Remove spark plug cover.
- Clean area around spark plug.
- Remove and inspect spark plug.
- Inspect electrode gap with wire feeler gauge and reset gap to 0.6-0.7mm (0.024-0.028 in).
- Install spark plug finger tight, then tighten an additional 3/8 to 1/2 turn using spark plug wrench.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Gap 0.024-0.028 in (0.6-0.7 mm)
Full service-parts list: Generac IQ3500 →
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.