Yamaha 40/50 hp

paperduck

Cadet
Joined
Feb 7, 2002
Messages
17
What is the difference between a 40 and 50 horsepower Yamaha? They seem to be the same engine as for as the specs. except for the difference in horsepower. Is the difference in the carbs, exhaust or something else?
 

Jammu

Petty Officer 3rd Class
Joined
Jan 25, 2003
Messages
85
Re: Yamaha 40/50 hp

Carbs, reed valves and exhaust are different. :rolleyes:
 

JUICED

Recruit
Joined
Aug 3, 2008
Messages
3
Re: Yamaha 40/50 hp

does anyone know exactly what the changes are to upgrade a 40hp 2stroke to 50hp yamaha?

has anyone done this and what costs were involved?
 
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