Went up north 4 hours with the kids to snowmobile on saturday and my F7 died. The only thing I got the pleasure of doing was warming it up and pulling it off the trailer. we started to ride and the piece of junk died on me. It started to stall out then I let off the gas and it continued to idle then I started going again and it quit. I pulled the rope and it was tight so I knew I siezed it.......I broke it free and it started but wouldnt idle unless I was on the gas.........I phoned my dealer and he said my smart valve might of leaned it out and thats why it siezed. I am bringing it in on monday and he said he is going to tear it down right away and try to get the parts flown here but I am not holding my breath.........it looks like there is snow and I am out of a sled over the xmas holidays. On the positive side my Z120 ran flawless for my kids and there is now 2 more snowmobile freaks in my house.