Tohatsu 8hp to 9.8hp

dstark

Recruit
Joined
Sep 26, 2009
Messages
5
I apologize if this a stupid question, I have done lots of searching and can't find a direct answer. Can I put a 9.8 carb on my 2010 8hp 4 stroke to increase hp? If not,is there anything I can do besides buy 9.8?

Thanks, Dan
 

Sea Rider

Supreme Mariner
Joined
Sep 20, 2008
Messages
12,345
Re: Tohatsu 8hp to 9.8hp

I apologize if this a stupid question, I have done lots of searching and can't find a direct answer. Can I put a 9.8 carb on my 2010 8hp 4 stroke to increase hp? If not,is there anything I can do besides buy 9.8?

Thanks, Dan

Theorically you could as both engines have 209 CC block , changing interior parts as main & slow jets whatever, would be more economical than having to buy a complete new 9.8 carb. Get a spare parts manual and see carb parts differences.

Happy Boating
 

pvanv

Admiral
Joined
Apr 20, 2008
Messages
6,573
Re: Tohatsu 8hp to 9.8hp

The carb bodies are different; changing jets and tubes (if you can even find them) will result in improper fuel/air ratios. You need the 9.8 carb (with the larger venturi), and yes, it will work fine.
 
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