Description
Carburetor Rebuild Kit for Yamaha WaveRunner III, Raider, VXR, GP — 650/700/701
Get your Yamaha WaveRunner back on the water with this complete Mikuni carburetor rebuild kit. Designed for the Yamaha 650, 700, and 701cc two-stroke marine engines powering the WaveRunner III, WaveRaider, VXR, and GP series (1990-1998). Includes all gaskets, diaphragms, needle/seat, and seals for single or dual Mikuni BN/SBN carburetors.
What's Included
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Pump diaphragm — Mikuni-spec reinforced diaphragm restores fuel pump pressure
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Metering diaphragm — Correct thickness and stiffness for proper fuel metering
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Needle & seat assembly — Viton-tipped for positive fuel shut-off
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Carburetor base gasket — Carb-to-manifold seal with exact port alignment
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Internal O-ring set — For fuel pump cover, metering block, and mixture screws
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Fuel inlet screen/filter — Replace the clogged factory screen
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Check valve flapper — Replacement for the fuel pump one-way valve
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Adjustment limiter cap set — Replace damaged or missing plastic limiter caps
Compatible Models
| Model |
Years |
Engine |
Carb |
| WaveRunner III |
1990-1996 |
650cc (6M6) |
Single Mikuni BN-38 |
| WaveRaider 700/760 |
1994-1998 |
700/760cc |
Dual Mikuni SBN |
| VXR / VXR Pro |
1992-1995 |
650/701cc |
Dual Mikuni BN-38 |
| GP760/GP1200 |
1997-1998 |
700/701cc |
Dual Mikuni SBN-44 |
Pre-mix note: The Yamaha 650/701 engines use an oil injection system. Verify your oil pump is functioning correctly after carb rebuild — a lean carb + failed oil pump = seized engine in seconds at WOT.
Frequently Asked Questions
Q: Will this fit my 1995 Yamaha WaveRaider 700?
A: Yes. The 1995 WaveRaider 700 (RA700) with the 701cc engine uses dual Mikuni SBN carburetors that this kit is designed to service.
Q: Does this kit rebuild one carb or two?
A: This kit provides parts for one complete carburetor rebuild. If your watercraft has dual carbs (most 700/701 models), you'll need two kits — one for each carburetor.
Q: How often should I rebuild the carbs on my WaveRunner?
A: Every 2-3 seasons of regular use, or anytime the watercraft has been stored for more than 6 months without running. Diaphragms stiffen during storage, causing poor performance or hard starting.
Q: Do I need to synchronize carbs after rebuilding a dual-carb model?
A: Yes. Dual carb setups require synchronization of both throttle plates and idle mixture screws. Use a carb synchronizer tool (manometer) to balance vacuum between the two carbs after installation.
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