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post #1 of Old 11-23-2009 Thread Starter
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Tohastsu - 8hp 4cycle - tech questions

Here's the story - purchased the Tohatsu 8hp 4 cycle last summer - so it's relatively new.

Used it frequently traveling on the Chesapeake and down the ICW. All of a sudden, it would not run slow. It would start right up, first pull, but when taking it down to idle to put it into gear, it stalls.

A friend who has the same engine told me that he had the same problem and it cost about $200.00 for a mechanic to fix it. Apparently, the slow jet in the carburetor clogs because of ethanol in the fuel.

I got busy and downloaded the parts manual PDF, located the slow jet, removed it - cleaned it, put it back together, and miracle of miracles, it worked!


Damn. I mean, darn.

I thought maybe the idle had to be adjusted - but not so. And I hate to take the carburetor apart every time it clogs - which so far is every time.

My questions:

Is there something I'm missing / don't understand?

Is there a downloadable repair manual on line anywhere? I can't find one.

Is there some kind of fuel additive, or cleaner that I could add to the fuel or spray in the air cleaner? (I have been told there is not - but not by professionals.)

Apparently I need to purchase non-ethanol fuel in the future to prevent this from happening. I am told that marinas in the south have it. Is this true? And what do I do when I get back north where apparently it is not available?

Is there some kind of slow jet for that engine which would accommodate the ethanol fuel?

Am I asking too many questions?

Right now, we're sitting at anchor in St. Augustine and the weather is beautiful - and we can't go to shore cause the dinghy engine is crapped. Soon, I will probably feel the wrath of Saltwater Suzi, so, HELP!!!

Saltwater Suzi and Cap'n Larry

"A sailboat is a fickle mistress. You’ve got to buy her things. You’ve got to understand everything about her. What you don’t know she’ll use against you." -Captain Larry

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