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Turn all the way in then about 1/4 turn out. This should get you close may have to twik alittle.
1-1/2 to 2 turns out.
If it's an EFI engine you do not adjust the mixture screw. The mixture is computer controlled.
Try 1.5 turns out on the mixture screw for an initial setting.
If the Polaris 50 Scrambler only runs for about five seconds and shuts off, it could be a problem with the idle setting. This type of ATV has an adjustment screw on the carburetor for turning the idle up. This should fix the problem.
the best way to set the idle mixture screw is with a gas analyzer. setting the mixture to 14:1. if you dont have one use a vacuum gage and set for the highest vacuum. If you dont have one of them then turn the screw in til the engine starts to stumble. then turn the screw out til the engine starts to stumble. turn the screw back in half the distance. that will be your best setting. Any leaner and the engine wont start, any richer and the engine will flood.
The only setting is one screw on the top of each carb its the mixture screw and should is 1.5 turns out by default.
Set idle speed to proper r.p.m, by adjusting the IDLE SPEED SCREW. Turn the IDLE MIXTURE SCREW or the AIR SCREW to for correct procedure, achieve highest speed and best response. The IDLE MIXTURE SCREW (FCR) controls fuel delivery to the idle port and the SCREW is located on the engine side of the carburetor slide. Turning the IDLE MIXTURE SCREW out will make idle and off-idle richer. Turning IDLE MIXTURE SCREW (CR, PWK, PJ, PE) controls the amount of air to the IDLE and SLOW CIRCUIT. This SCREW is located on the air cleaner side of the throttle slide and turning the SCREW out will lean the mixture and turning the SCREW in (clockwise) will richen the mixture.
Basically get lighter parts and also fiddle wid the tickover screw
Start at 1 1/2 turns from seat and then adjust for the best idle
Cant say from experience with this particular model whether it is an air or fuel screw, however; If there is only one screw then it does both. If there are 2 others near it then one does the air, the other two do the fuel. The factory standard setting for the main idle-adjustment screw on most bikes is 1 and 1half turns out from closed position. This is often the case with the other adjuster screws as well, but the mixture will need to be altered as the engine wears.
1 - You can control the angle of the screw cutting tools. 2 - setting screw cutting lathe control. 3 - reduce the depth at every step. 4 - Adjust the speed milling machine. 5 - Barry screws to release the lever, do not screw cutting lathe.