So I picked up an unknown 250 utility body atv. Turns out to be a jianshe 250. Has the hensing 230cc engine on it. It was a basketcase. Cdi hooked up wrong. Has a 7 wire cdi. 16 coil stator, and everything is outrageously priced for this thing. Luckily I think everything is working now that I completely rewired the thing and got new coil. Except for the fuel system. It has the mv30 carb. 30mm intake and 45 mm airbox side. First link is what I have. Second is what I want. You all reckon it should work. I did not know if I could change to top load throttle because I have a side operated butterfly. On the kc30 carbs, there are two diaphragms that seem not in the best shape and a plastic fitting on the side that is barbed that looks like a vacuum line or vent tube and can't find anywhere a vacuum line may run to so I was assuming its a vent. Won't run more than 3 seconds. Ether has no effect. I think the enrichener is flooding it out I've soaked the carb, so I'm just buying new thanks for any insight
Carburetor 18 for Chinese 250JS Engines Only - Ca279-18 - 150cc-250cc Carbs - Chinese Carburetors

30mm YAMAHA SUZUKI KAWASAKI ATV BIKE CARBURETOR CARB 30 | eBay

 

ether has no effect? wow, so you don't have spark or is your compression gone?
is that one hose/vent you're talking about the overflow vent hose? i wouldn't think it'd run to the intake as a vacuum inducer hose. 2 diaphragms? hmmm...... for a vacuum operated fuel pump? is it similiar to the old suzuki diaphragm fuel pumps from the late 80x to the early 90s?

 

I'm having issues with the same atv I got it with the carb off it has a electric choke I can't figure out where my vaccum and vent hoses go any help?