Firman W01785 — Spark Plug Maintenance
Maintenance · spark_plug
For the Firman W01785, from the Firman owner's manual.
Browse Firman generators & specs →
Procedure
- Remove maintenance cover
- Remove spark plug boot
- Remove spark plug using provided wrench
- Inspect plug for damage, clean with wire brush before reinstalling, replace if damaged
- Adjust electrode gap to 0.028-0.031 in (0.7-0.8mm)
- Seat spark plug and thread by hand
- Tighten plug with provided wrench and reattach spark plug boot
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
- Gap 0.028-0.031 in (0.7-0.8mm)
Source: Firman 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.