Just had a 2004 Sportsman 600 in the shop..Owner stated in would only run with choke partly pulled.Checked airbox and it was very dirty.Pulled carb and cleaned main-jet..Still after re-assembly same problem..Checked boot (connects carb to head) and it was ripped really bad..Replaced it and now the atv runs fine.I now check all twins when they come in for service for same problem and most of the older ones are starting to crack on the end that connects to carb.I suspect since the carb has a bracket mounted to the frame and the motor torques when under load this movement after time destroys the boot.(carb mounted soild and motor rocks)
|