1990-1998 Arctic Cat Snowmobiles Repair Manual, Page 306Get this manual
296 1To ensure adequate lubrication when bleeding the pump, use 50: pre-mix in the fuel tankThis gasolineoil mixture will be used together with the oil supplied by the injection systemNOTE Do not continue to use 50:1 pre-mix after bleeding the oil pump unless the snowmobile is operating in weather conditions where the ambient temperature is _26 (-15 F) or colderUnder these temperature conditions, the 50:1 premix together with the oil injection system will help to ensure sufficient engine lubricationContinuing to use the pre-mix under normal conditions can lead to spark plug fouling and rapid buildup of carbonRefer to Chapter Three for lubrication requirements
CHAPTER TEN
NOTE The carburetors and engine are removed in Figure for clarityThe engine shown is typical