You can adjust the idle on your Polaris 90 by turning the adjustment screw on the side of the fuel pump. Turn the adjustment screw to the left to increase the idle speed.
It may be that the idle is set at max rpm on your carberator
To adjust the idle on a Polaris 250 Trail Boss, locate the idle adjustment screw on the carburetor, typically near the throttle linkage. Start the engine and allow it to warm up, then use a screwdriver to turn the idle screw clockwise to increase the idle speed or counterclockwise to decrease it. Aim for a steady idle around 1,200 to 1,500 RPM. Be sure to check the owner's manual for specific idle specifications and procedures for your model.
Idle speed is controled by the computer, therefore non adjustable.
To adjust the idle on a 2001 Polaris Sportsman 500, locate the idle adjustment screw on the carburetor. Start the engine and let it warm up, then turn the idle screw clockwise to increase the idle speed or counterclockwise to decrease it until you achieve the desired RPM. Ensure the engine runs smoothly without stalling, and make fine adjustments as necessary. Always refer to the owner's manual for specific RPM settings and additional guidance.
To adjust the idle on a 1997 Polaris Sportsman 500, locate the idle adjustment screw on the carburetor. Start the engine and let it warm up, then turn the idle adjustment screw clockwise to increase the idle speed or counterclockwise to decrease it until you reach the desired RPM, typically around 1200-1400 RPM. Ensure the engine runs smoothly at this setting, and make any necessary fine adjustments. Finally, check for any unusual noises or vibrations during operation.
You don't, fix the vacuum leak that's causing the eratic idle conditions
I assume it has carb's. If so, follow the cable to the carb's. There is a little screw you can tighten to increase the idle or lower it. Just a long screwdriver and watch the tach.
You have two adjusting screws at the top of the dieselpump. And the outer screw is for idle if i dont remember wrong. but that you will notice when you adjust the screw.
the idle is set by the comp so u need some sort of programmer
You adjust idle with idle timing
Adjust idle on Mitsubishi diamante