Idle won't adjust

3100 Views 4 Replies 3 Participants Last post by Helmut, Oct 30, 2010

garlinbl

Discussion Starter · Oct 30, 2010

I have an 88 fourtrax 300, been fixing last odds and ends on to get to trail riding shape. I will ride for a while with the idle consistent even while not moving, but eventually idle revs higher and won't calm back down to normal idle either in gear or in neutral...I have tried to adjust the idle with the black knob under the seat, as I did on my 90 before, but the adjust knob seems very loose and doesn't seem to be doing any adjusting in either direction...it almost seems stripped...is this possible and how to fix?

Thanks.

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shadetree

· #2 · Oct 30, 2010

garlinbl said:
I have an 88 fourtrax 300, been fixing last odds and ends on to get to trail riding shape. I will ride for a while with the idle consistent even while not moving, but eventually idle revs higher and won't calm back down to normal idle either in gear or in neutral...I have tried to adjust the idle with the black knob under the seat, as I did on my 90 before, but the adjust knob seems very loose and doesn't seem to be doing any adjusting in either direction...it almost seems stripped...is this possible and how to fix?

Thanks.

more than likely..your idle jet is stopped up..take the carb off..and check the idle jet.

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