LeonPhelps
Jet Boat Addict
- Messages
- 84
- Reaction score
- 28
- Points
- 87
- Boat Make
- Yamaha
- Year
- 2021
- Boat Model
- FSH Sport
- Boat Length
- 25
Does anyone here have a service manual for a 2021 255FSH that can tell me what to gap the plugs to ?
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2021 255FSH Spark plug gap
- Thread starter LeonPhelps
- Start date
FSH 210 Sport
Jetboaters Fleet Admiral
- Messages
- 7,399
- Reaction score
- 9,244
- Points
- 512
- Location
- Tranquility Base
- Boat Make
- Yamaha
- Year
- 2020
- Boat Model
- FSH Sport
- Boat Length
- 21
From your owners manual…
LeonPhelps
Jet Boat Addict
- Messages
- 84
- Reaction score
- 28
- Points
- 87
- Boat Make
- Yamaha
- Year
- 2021
- Boat Model
- FSH Sport
- Boat Length
- 25
SCSCOTT
Jet Boat Lover
- Messages
- 35
- Reaction score
- 31
- Points
- 77
- Location
- Charleston, SC
- Boat Make
- Yamaha
- Year
- 2021
- Boat Model
- FSH Sport
- Boat Length
- 19
Info from NGK - NGK LFR7A spark plugs are pre-gapped at 0.35 in (0.9 mm), but you can check the gap with a gap gauge and adjust it if needed. NGK recommends using a round wire-style or pin gauge gap tool. If you need to widen the gap, use a tool that only pulls back on the ground electrode, being careful not to touch the center electrode or porcelain. To close the gap, gently tap the plug on a hard surface, electrode first.
