Honda EB5000 / EB6500 — Spark Plug Service
Maintenance
For the Honda EB5000 / EB6500, from the Honda owner's manual.
Applies to: Honda EB6500, Honda GX390T2 engine
Before you start
- If the engine is hot, allow it to cool before servicing the spark plug.
Parts for this job
Part numbers from the service-parts lists for Honda EB6500, Honda GX390T2 engine. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Disconnect the spark plug cap and remove dirt from around the spark plug area.
- Remove the spark plug with a spark plug wrench.
- Inspect the spark plug; replace if worn, fouled, cracked, or chipped.
- Measure the electrode gap with a wire-type feeler gauge and correct by bending the side electrode.
- Thread the spark plug in by hand to prevent cross-threading.
- Tighten with a spark plug wrench; 1/8–1/4 turn used, 1/2 turn new, after seating.
- Attach the spark plug cap.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Spark plug gap: 0.028–0.031 in (0.7–0.8 mm)
- Torque: 13.0 lbf·ft (17.7 N·m, 1.8 kgf·m)
Full service-parts list: Honda EB6500 →, Honda GX390T2 engine →
Source: Honda 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.