Tell ur mechanic to fix the mixture of carb and then open the carb throttle needle to adjust petrol
there is mark on it 4 normal higher and lower fuel make it higher ...use T2 side oil or any other good
oil that has thin layer ....adjust your oil pump to mid level so that it can give less smoke ..use NGK
IRADIUM 7HS plugs...check ur plug to ensure how they look black or brown that will give u idea abt
engine internals..yamaha 2 stroke will over REV if it go beyond 140km i have a 87 it easily goes to 137
km/hr .....