Yamaha Big Bear runs but??
#1
Yamaha Big Bear runs but??
My old Big Bear runs and cuts out and burns rich no matter what you do to it. New plug, cleaned carb, rebuilt carb, adjusted valves, new air filter, new float. Got to be fuel related??? The only time the motor sounds like it is going to run right is when I shut the gas off and let it run out of gas. When I do this and when the fuel bowl is running out of gas the motor will scream. Any thoughts? Thanks very much.
#2
If it's running too rich then it could be getting too much gas or not getting enough air, or both. The way to get too much gas is the wrong size jet (or somebody drilled it out) or the needle is raised too high. You might could adjust the air screw to let it get more air. I would verify the jets are correct, make sure the needle is set right, and make sure the air screw is adjusted correctly. You could always drop the needle to see if it helps, it won't cost anything.
#3
If it's running too rich then it could be getting too much gas or not getting enough air, or both. The way to get too much gas is the wrong size jet (or somebody drilled it out) or the needle is raised too high. You might could adjust the air screw to let it get more air.
#4
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