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Mend Yamaha FX140 Waverunner Engine

140 FX waverunner 2002?

Cranks, then sputters, when giving gas still sputters,then engine revs normal when giving gas, cuts
off if you let go the throttle! It will crank back up, give it gas runs fine even full throttle doing 52mph. When you let off throttle it dies! Whats up with it?

Steve Brown
August 2009
YamahaYamaha FX140Boats, PowerboatsWaverunner Yamaha Engine
Are they fuel injected ? have you tried new plugs ?

kevin
August 2009

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Yamaha FX140 Waverunner - Troubleshooting