Take it apart but first turn each adjusting screw in until it bottoms out (gently) counting the number of turns and writing the number down for each screw! Then disassemble the carb completely - if you are very careful you may succeed i getting it apart without tearing any of the gaskets and diaphragms - if you save all the gaskets and diaphragms then you will not need a new carb kit in most cases. If you do need a kit they are available at almost any snowmobile shop - or you can order one online from the manufacturer - in either case you will need the make and model of the carburetor and the year and engine size and model of the sled to select the correct kit.
Clean everything thoroughly using carb cleaner and compressed air and reassemble paying particular attention to getting all of the gaskets and diaphragms reassembled in their correct orientations!
Reinstall the mixture screws and adjust them to their correct number of turns out from bottom.
Reconnect the fuel line and set the choke and crank it over until the fuel is drawn up from the tank - this may take quite a few pulls if the fuel level in the tank is low.
Once it starts and is warmed up adjust the idle mixture screw for best idle, adjusting the main mixture screw if your carb has one is a little trickier because you have to perform repeated full power runs making small adjustments each time until it feels strong and smooth from launch to full speed.
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03-25-2009, 11:48 AM
Linear Mode
