just bought a 1978 yamaha dt175 and seems to run fine. However everytime i stop runnin it, tons of gas pours out of the overflow tube hanging from the carb. How do i fix this?

just bought a 1978 yamaha dt175 and seems to run fine. However everytime i stop runnin it, tons of gas pours out of the overflow tube hanging from the carb. How do i fix this?

Its likely to be the carburetor float height setting, it should be set to 21mm

i'm trying to get almost the same bike working , what does yours rev to wide open ?

i've had a problem similar to yours. I would say its an adjustment to your floats , or your float valve is getting stuck. You may just need to replace your float valve.

hi mate just seen your question ,you have a float problem ,either its not set correctly or its sticking ,could also have a hole in it but thats rare..regards martin

Thanks I have the same problem. I'm waiting for a manual for the bike. The float height is 21mm, how is this measured? With the float hanging down or with the needle just touching the float?

Thanks I have the same problem. I'm waiting for a manual for the bike. The float height is 21mm, how is this measured? With the float hanging down or with the needle just touching the float?

Measure wit the float just touching the needle and measure to the carb flange, not the gasket that sits thereon

Measure wit the float just touching the needle and measure to the carb flange, not the gasket that sits thereon

Thanks I'll measure it tomorrow!

Measure wit the float just touching the needle and measure to the carb flange, not the gasket that sits thereon

is that with gasket removed or not

regards Jim

Measure wit the float just touching the needle and measure to the carb flange, not the gasket that sits thereon

is that with gasket removed or not

regards Jim

For you Jim, measure to the carb flange, not to the gasket...