AY50 Katane 'Ped Carburettor

[Straw Walker]

I've just replaced the piston and barrel on my grandsons ped. It's fairly well run in now but I'm having trouble setting up the idle. It's a slide type that I know well from the old Amal Monobloc but I can't work out if the idle mixture screw is fuel or air bleed. It's a right sod to get at without taking off loads of plastic so it would be handy to know if I'm turning it the right way.

[eastanglianbiker]

the idle screw is often air mix basic rule is turn it all the way in and then out 1 1/2 turns as a starting point

[Straw Walker]

Thanks, the basic setting according to Mr Haynes is 1 3/4 turns out but it's not happy there and difficult to tell with these little 2 strokes if it's getting richer or leaner as the revs go up whichever way I turn it. It'd probably be easier with the drive belt off as the auto clutch cuts in as soon as the revs rise. 4 strokes and model glow motors are much easier

[eastanglianbiker]

the further out it is the more air its getting so runs leaner

[Straw Walker]

Thanks for the info. I now have another rebuild to do as the boy has seized it again after just 150 miles. He says he wasn't ragging it but -------------? This is its final chance, next time it's spares or repair on E-bay.

[eastanglianbiker]

make sure if its 2 stroke that the oil pump is bleed properly and pumping correct amount of oil in if not sure add small amount of 2 stroke oil directly into petrol tank so that will help prevent it cooking might smoke slightly more but if its smoking then its getting oil........lol