Awkward little things, these...anyway, use a 25:1 ratio of petrol to two stroke oil. If your machine has a primer bulb, press it 4 or 5 times. Then, put the choke full on, and hold the throttle fully open. Its best if you have 3 hands for this until you get used to it! Pull the recoil starter really briskly a few times and the engine should fire then stop. Open the choke, keep the throttle fully open, pull the starter again and off you (should) go.
John, May 2009