Anyone wondering about air problems with the cooling system on the F1000 and any 07 F series sled should read the post titled "1000 Cat Engine Burn Downs! One Possible Cause!". This post is found in this site under general snowmobile discussion; then go to Cat service bulletins and recalls.
Crossfire ECU: word has it the Crossfire 1000's have the same fuel map and timing curve as the M series sleds. What does this mean? It means that the sled has to much timing and is to lean for low elevation running. The end result is lean burn down!
Crossfire ECU: word has it the Crossfire 1000's have the same fuel map and timing curve as the M series sleds. What does this mean? It means that the sled has to much timing and is to lean for low elevation running. The end result is lean burn down!