Throttle Valve Tohatsu M3.5B2

daveson

Cadet
Joined
Mar 2, 2011
Messages
12
Hello,
another question concerning my Tohatsu M3.5B2 outboard.
Today i took a closer look at the carburetor, and i noticed, that the throttle valve is never automatically in its lowest possible position. I can always push the valve (the upper pin) further down by hand. From the service manual i think a spring should pull the valve down, which works, but it never pulls it down completely. I can always push it down some millimeters by hand.

I tried pushing the throttle valve further down by hand, and it worked, but once i move the throttle lever up and then down again, the valve doensn't go back in the lowest position but stops some millimeters before.
Is this normal? Or is the spring too weak? Any suggestions?

Dave
 

Sea Rider

Supreme Mariner
Joined
Sep 20, 2008
Messages
12,345
Re: Throttle Valve Tohatsu M3.5B2

It's something I've always wondered. Have several engine's carb doing same, seems factory standard, as long it does not affect performance will be nothing to worry about.

Happy Boating
 
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