2004 Polaris Pro X Factory Service Manual, Page 14Get this manual
SPECIFICATIONS MODEL: 800 PRO (X) MODEL NUMBER: S04NX8CS (S04NY8CS) ENGINE MODEL: S2470- 8070- PR8C ENGINE Engine Type Engine Displacement cc Bore inmm Stroke inmm Cylinders PistonCylinder Clearence inmm Piston Ring End Gap inmm Piston Marking Piston Ring Marking Operating RPM 200 Idle RPM 200 Engagement RPM 300 Exhaust Valve Spring Libertyt 794 3.35"85mm 2.76"70mm .00023 00029" .0060 .0074mm .0006 .0009" .016 .022mm NA 3021315 7900 1500 3500 PinkYellow Type Main Jet Pilot Jet Jet Needle Needle Jet CARBURETION Mikuni TM 40 450 55 9DGN557P8
Throttle Gap UnderCutaway 0.079" inmm 2.0 mm Cutaway Valve Seat Starter Jet Fuel Screw Pilot Air Jet Air Screw Fuel Octane (R+M2) AMBIENT TEMPERATURE 1.5 1.8 135 2.0 Turns NA 1.0 Turns 87 OctNonOxy89 OctOxy
Altitude
0600 (02000) 6001200 (20004000) 12001800 (40006000) 18002400 (60008000) (6000 8000) 24003000 (800010000) (8000 10000) 30003700 (1000012000) (10000 12000)