Yamaha, F4BMH 4-stroke 4HP, 2021

by Arie
(Netherlands)

Hi can i upgrade this engine to become a 6 HP by changing the carburator only?. Or are there more parts that needs to be changed

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Aug 24, 2023
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starstarstarstarstar 		4hp to 6hp
by: Anonymous

I did change the carb and gained 1 nt speed, hahah, but it was taking more gas. Best to do is invest in good prop, not plastic. At the end of the day I upgraded the motor to 9hp and I'm happy now.

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