it may be that iol got into yur muffler an it is stuck i there... tis actually ju happened to me a day ago... u probably just have to taoff yor muffler and le it sit overnight with the screened exit facing down...the oil will come out and your mini bike should work fine...
.02"-.03" for exhaust, .03"-.04" for intake
You can find them here...http://www.bajamotorsportsonline.com/parts_category.php
there are a lot of homelite machines out there weed eater chainsaws you didnt tell us what it is but i can tell you the best thing to do is go to your nearest dealer tell them what it is they can get you a plug.you can also call to save on costly gas.
The Tractor Supply website lists 15-19MPH
I'm pretty sure its a #420... hit up your motorcycle shop to find out for sure
There are two things that control the throttle. One is a steel rod, and the other is a spring. Remove the spring and replace it with a steel rod (you will have to fabricate something) and that's it. The gas tank will have to be removed to get at the linkage.
It rounds out to 6.5hp!
Under the actual gas tank, there will be a screw and a spring on the screw(governor). loosen up that screw until there is only about 2mm on the inside.
6.5
6.03 hp.
A Hisun 196cc engine is better
it will probably be around 15HP