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Yamaha 60hp 4 stroke outboard wont run over 4000 rpm

searay_43

New member
We have a 2002 outboard that won't run over 4000 rpm causing the boat (16' G3) to never get up on a plane. Here is what has been done:
1. New plugs
2. New fuel filter
3. Check Fuel pump
4. New water separator
5. New Prop (Old one was damaged) Dealer replacement so pitch is correct
6. New anti-syphon valve
7. New Fuel bulb
8 Mechanic in a bottle run through in the last outing

Any thoughts on why this won't run over 4k ? Other than that it runs perfect
Thanks
 
Sounds like it's still not propped correctly.
when you say dealer replaced, did they water test it ?
it could be incorrect diameter vs just pitch
 
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