[aussieidiot]

i used to use a product called "redex" which was a deposit cleaner for jets in carbies. i would pull each spark plug and put a teaspoon of this stuff in each cylinder with a little fuel and turn the motor without the plugs in. then pour some cleaner into the carby throat. and then add whats left in the bottle to about 5 liters of fuel. put the spark plugs back in

try to start the bike. it won't start for quite a few turns. (its like trying to start a whipper-snipper on full choke). leave it soak for 5-10 minutes and try again.

ps don't do this in your garage. open space only as when it starts, there is so much smoke, it's like your in the middle of a burnout comp.