Join Date: Jan 2010
Location: NE, WI
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Sled: 02 zl600, 03 F7 green, 03F7 red
09-10 Mileage: 1200
08-09 Mileage: 1200
07-08 Mileage: 1000
SnowHo, I did some research on this and all my manuals say the same, up to 10% ethanol connect, over 10% disconnect. I have a combined 12,000 miles on my 4 EFI cats ranging from 1999-2002 all 4 with wires plugged in, never any issues. Hope this helps.
This is What the service manual states:
Quoted directly from the 2003 Arctic Cat service manual:
Recommended Gasoline for EFI models.
"The recommended gasoline to use in these snowmobiles is 87 minimum octane regular unleaded. In many areas, oxygenates(either ethanol or MTBE) are added to the gasoline. Oxygenated gasolines containing up to 10% ethanol or up to 15% MTBE are acceptable gasolines. Do not use gasolines containing methanol.
NOTE: When using the recommended gasoline(above), the Fuel designation connector at the ECU must be connected.
NOTE: When using oxygenated gasolines (over 10% ethanol or over 15% MTBE), the Fuel designation connector at the ECU must be disconnected.
When using ethanol blended gasoline, it is not necessary to add a gasoline antifreeze since ethanol will prevent the accumulation of moisture in the fuel system.
Do not use white gas or gasoline containing methanol. Only Arctic Cat approved gasoline additives should be used.