First time poster from Aus.
picked up a "chopper" 49cc aircooled which is 2 years old and riden 3 times for $100au. took a bit to get her started but now running is a bit of a hoot.
just a question regarding 2 strokes, and i appoligise if i am in the wrong section for this. i'm a carby 4 stroke car motor man but never worked with a typical 2 stroke and need a bit of help. the old girl gets 15mph down hill and 10mph just uphill on a 1 in 5 gradient but splutters at highspeed.
carb has an idle adjuster and a mix screw, is the mix screw just for idle mix or can i mess with it to get a bit more go out of it, and how do i tell if it is lean or rich?
mix of fuel and oil is errr about 1:20 as written on the tank. any help is appreciated
and loving the site!