120
A 300cc quad goes 60mph+
It is fast but not the fastest 4-Wheeler.
if it an actually 4 wheeler your talking about i can't help you but a side by side is a 4 wheeler and the fastest in that is the polaris razar S it runs an 800 cc enigine auto tran 4wd and run the industry leading 63 mph
because it has a problem . go to home depot
A Yamaha warrrior is a good 4 wheeler mine all stock would go 59 to 65mph
your main jet is plugged
If you are looking for a gas efficient four wheeler than I would recommend buying the fuel efficient Cherokee which can save you a lot on gas in a economy where gas prices are very high.
Go downhill.
No
check the fuel filters
You probably have to mix it in with the gas.