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#1 |
Join Date: Dec 2021
Posts: 1
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Kayo Bull 200 Carb or A/F ratio adjustment
Hello all,
First post here. I bought two Kayo Bull 200's for my sons. We've had them for about 3 months. I really didn't ride them much as I have a larger ATV for myself. But yesterday I rode both my sons ATV's and noticed one of them didn't run quite as smoothly as the other. I tested the top speed of both and one went 39 mph in a two block period without hesitation. The other went 37 mph but took an extra block to get there and hesitating a bit. Research told me that if an ATV with a carb bogs its running lean, if it sputters or hesitates while accelerating it's running rich. So it appears this one is running rich. Anybody got pics of the A/F ratio screw on the Kayo Bull 200? Which direction do you turn the screw to make it run more lean? Thanks |
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#2 |
Join Date: Oct 2020
Location: Flower Mound Texas
Posts: 904
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If it hesitates under hard acceleration and there's no black smoke it's usually lean. It can also be the symptom of an old spark plug.
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#3 |
Moderator
Join Date: Oct 2016
Location: Houma, La.
Posts: 11,656
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Depending on what carb you have. If it has a manual choke. It could be on half choke. If auto choke, The auto may not be working properly. At WOT there is no mixture setting. You will have to change the main jet. More than likely running lean.
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