Mikuni Vm20-151

T

The Swede

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22 März 2026
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46495 Dalskog
Fahrzeug(e)
Hercules supra 4 gp
I bought one original carburator whith 30 low jet and 95 main jet.Good on idle and litlle over that and hopeless the rest 80%.Change needle from middle possition to lowest so it get more petrol=Better but not good.Change main jet up to 135=Little better but it still seems to get to little fuel between 30-85 of the trottle.Read that it neccesary too check/ adjust brass-float-measurment from factory.So i have 19mm and change as picture to 22mm.Then engine works perfect over the whole trootle.Good on idle and the whole trottle and full speed.I have a sachs 506/4 engine Hercules supra 4gp 1981 Parmakit set 70cc whith this carburator.Mabe there is other people whith simular problem that can be helpt.
 

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