Dave:

I bought an used YS 140FZ, no instruction, just the box.

I tried to downlow the online manual from from YSperformance without success.
sure it is my bad computer skills.

Can You help me with the hoses, there are neeples in the back plate I do not know what to do with then!

Engine starts and as soon as I throtlle up it dies, I have not connected any of the 2 nipples in the back plate.

please help.

You must hook the lines up correctly or the engine will not run.

1. Left fitting on the backplate hooks to left front fitting on the top of the crankcase.

2. Right fitting goes through the check valve and into the fuel tank.

3. Right front fitting on crankcase is for fuel from the tank.

4. The other left front connects to the carb.