Hi everyone,

I was looking on the internet for carb info and found this forum. I am working on my first Polaris as a project 4 wheeler. 1991 Trail Boss 250 2-stroke.

Could anyone please help me with routing the carb vent lines. My polaris repair book is not too clear on what is what. There is supposed to be a "T" in the lines somewhere which I have.

There are two small black plastic barb connections, one on the top, and one on the bottom of the carb. There is also another hose connection that is smaller than the fuel line connection on the top. I put a vent line on each of the 3 connections. When I first turned on the gas it started comming out of the bottom vent connection. I don't know where the "T" goes and I think the float must be stuck.

Thanks in advance for any help.

 

You can disregard the "T" fitting and run 3 separate lines,the top 2 are for air intake, route them upwards under tank and zip tie. Bottom on carb bowl is overflow tube. If gas flowing out of bottom then possible needle valve assembly or float problems as you posted,usually needle valve assy worn(I always call em needle and seats,but confuses some people) Good luck

 

Thanks Old Polaris Tech! I appreciate your detailed response. I understand the routing now. You can only learn so much from a book. The really valuable info comes directly from experienced folks!