Tanaka 1.2 hp tob-120 lean rich setting???

[kenpearce]

I've recently acquired a Tanaka 1.2 hp engine and am having trouble getting it to run at full power. It starts ok, runs a little rough I'm assuming because the mix is too rich? I'm not finding any documentation or discussion that this engine has a lean/rich mixture adjustment. I recently replaced a missing float needle which would explain why fuel was running everywhere, but it still runs too rich. When I shut off the fuel stopcock it runs beautifully when it's finally running out of gas, but only momentarily of course. <br /><br />Is there any adjustment on the carb jet? <br /><br />I precisely mixed my fuel 50:1 and used 2-cycle oil made for chainsaws and outboards...<br /><br />Thanks in advance, <br /><br />Ken<br />Bellingham, WA

 

[steelespike]

Re: Tanaka 1.2 hp tob-120 lean rich setting???

There could be a low speed adjust but not likely a high speed.Be sure the high speed jet is in place.<br />My guess is the float is set wrong,bent,gas soaked.Float valve may be hanging up.Flip the carb over and blow into the gas line.Usually the float is roughly level when closed.

 

[wv fisherman]

Re: Tanaka 1.2 hp tob-120 lean rich setting???

Ken, Ive had the same problem, one word will sum it up.... points, make sure they are "perfect" you can get a manual from tanaka.com they will email it to you... wv fisherman