From what i read its a boxer 4 with a single carb idk the mm size its rated at 6hp because it is super ristrictive with dual 22mm carb it will have 20-28hp and loads of tourqe
not really from specs online the engine weighs 122 pound a predator 670 weighs about 120 and yes it is heavier but it is a 20-25 hp from what i have read
or make a custom one these work well also if it has front and rear suspension how will you tighten the chain if it is underneath your seat go karts that have front and rear suspension use these
Question when you start it
1 dose it have compression
2 dose it pop (like there is a explosion happening in the engine)
3 is it getting air and fuel
4 is the kill switch on