900 Arctic Cat - 2003 Exhaust System Installation
Remove entire stock exhaust system, muffler mounting bracket, exhaust manifold, and mounting bracket on chain case. Install spring clip - center cross brace front (there is an existing hole) Install spring tab on existing 1/4" bolt that is directly in front of exhaust outlet. Install muffler through stock hole. Stretch spring between floor and mufflers. (It will be easier before pipes are in position) Install exhaust flanges, mounting spring tabs on each side. Place aluminum shield over shock tower. Bend to fit and securely rivet into place. Place a bead of high-temperature silicone around exhaust manifolds to prevent leakage. Also place a bead around stingers where pipes and mufflers join. Place pipes into position beginning with the magneto pipe making sure that the flanges slide all the way together both at the manifold and the mufflers. Then install PTO pipe. Using stock springs and the two springs provided, spring joints together.
Recommended Clutching and Jetting Instructions
| MODEL | 0-4,000 ft Elevation | 4-6,000 ft Elevation | 6-8,000 ft Elevation | 8-10,000 ft Elevation |
|
03 900 Cat |
460-460 main jets, depending on temp. | 440-420 main jets, depending on temp. | 400 main jets, Driven clutch 47 degree cam with green snow pro spring, in 3rd hole. Yellow/ white drive clutch spring with 67 gram weights. | 390 main jets, Driven clutch 47 degree cam with green snow pro spring, in 3rd hole. Yellow/ white drive clutch spring with 67 gram weights. |