2004 650 Twin Arctic Cat ATV Service Manual, Page 80Get this manual
10Remove the tape or caps from the intake hoses checking for any dirt, hardware items, or liquids; then install the carburetors into the intake hoses and tighten the clamps securelyMake sure the carburetors are securely seated by rocking side to side after installation ! CAUTION
Make sure to check intake hoses for any foreign matterSevere engine damage will occur if liquids or hardware items are ingested at start-up
8Install all exhaust system heat shields and tighten the mounting screws securely; then install two muffler mounts, hardware, and bolts and tighten securely