Yamaha EF6300iSDE — Spark plug inspection
Maintenance
For the Yamaha EF6300iSDE, from the Yamaha owner's manual.
Procedure
- Remove bolts and pull outward on front cover.
- Remove spark plug cap and spark plug.
- Check for discoloration and remove carbon.
- Check plug type and gap with a wire thickness gauge.
- Install the spark plug.
- Install the spark plug cap.
- Install front cover and tighten bolts.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Standard spark plug: BPR4ES FridayParts $49.00 (NGK)
- Spark plug gap: 0.7–0.8 mm (0.028–0.031 in)
- Spark plug torque: 20.0 N·m (2.0 kgf·m, 14.8 lbf·ft)
Source: Yamaha 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.