Last Summer I took a job of spot-spraying thistles in some CRP farmland (tall grasses, flowers, some weeds). Part way through the season my 2012 Sportsman 500 starts acting up. When I get to about 1/4 throttle, the motor seems to hesitate... kind of fall on it's face. If I let up on the throttle it will run fine, or if I keep advancing the throttle it will get pas the hesitation and run fine. I don't use this machine a lot so I didn't get around to fixing it yet. Now that it's cold outside, the hesitation seems hardly noticeable , if at all... but I haven't used it very much in cold weather yet to be 100% sure. This leads me to think the mixture is too rich, not too lean as I first suspected.
I've cleaned the air filter and foam sleeve, the hesitation at 1/4 throttle is still there. Are there any carb adjustments that I could try before removing the carb ?
IIRC, I've got around 200 hours on this ATV. If I have to remove the carb, is this something that could be cured with a can of carb cleaner and compressed air ? I used to rebuild my own Holley and Rochester carbs 40 years ago, but haven't done that kind of work since.
I've cleaned the air filter and foam sleeve, the hesitation at 1/4 throttle is still there. Are there any carb adjustments that I could try before removing the carb ?
IIRC, I've got around 200 hours on this ATV. If I have to remove the carb, is this something that could be cured with a can of carb cleaner and compressed air ? I used to rebuild my own Holley and Rochester carbs 40 years ago, but haven't done that kind of work since.


