1990-1998 Arctic Cat Snowmobiles Repair Manual, Page 305Get this manual
Chapter Ten
011 Injection System
The most desirable fueVoil ratio for snowmobile engines depends upon engine speed and loadWithout oil injection, oil must be handmixed with gasolineSince the mixture of gasoline and oil does not change, oil must be mixed at the highest ratio necessary to ensure sufficient lubrication at all operating speeds and engine load conditionsThis ratio contains more oil than required to lubricate the engine properly at idle speeds without loadThe result is the spark plug is sometimes oil fouled due to excessWith oil injection, the amount of oil injected varies to provide the optimum amount to lubricate the engine while it runs at varying speeds and load conditionsAll engines used in Arctic Cat snowmobiles are equipped with an oil injection systemThe system consists of an external oil tank (reservoir), oil injection hoses, control cable and mechanical gear-driven pump with variable controlThe oil pump control cable is attached to the control lever of the pump and it is also joined to the throttle control cable so they operate simultaneously