So after having the carbs on and off AGAIN AND AGAIN AGAIN AND AGAIN !!
It now ticks over at 1000 rpm, steady as a rock ! carbs balanced, 2.5 turns out on the mixture.

(ticks over smoother than my blackbird !! (injection))

She revs dead smooth , no lumps of farts! and the revs drop almost instantly so I'm happy (I think )

BUT....I have a question, the idle adjust is not even contacting the carb. Throttle cable is ever so slightly slightly slack, Is this ok ?
Also at 1000 rpm sounds slightly "clonky" but as soon as the revs rise, all is quiet.

thanks for any answers in advance

Geoff 916

Should be around 1300rpm. Throttle should have a little play . Can't remember exactly, Haynes is you best friend.


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Hi Geoff, a well setup set of carbs will idle at 1000rpm but the engine will normally be happier at 1350. These little engines have very little crank mass so can seem a bit clonky when the idle is set too low

Thanks for that.

I will leave well alone now its working, although the little sod started first time a cpl mins ago, ticked over for two mins then died. Now it wont start again !! GRRRR

Before anyone says anything, yes it has half a tank !! lol

could it be the fuel pump? Try bypassing the pump (disconnect the wiring too) and running the bike from a remote tank or even the main tank as long as it's over half full so the fuel level is above the carbs.