2003-2006 Yamaha Snowmobile RX1 Service Manual, Page 83Get this manual

2003-2006 Yamaha Snowmobile RX1 Service Manual, Page 83

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HIGH ALTITUDE TUNING
Test the low speed setting OK Adjust the engine idle speed by turning the stop screw of carburetorCheck to see if the gearing is too high or low OK

Try high alt