2004 Polaris Pro X Factory Service Manual, Page 25Get this manual
GENERAL INFORMATION PRO Introduction
Polaris' 440 PRO XR model has been designed and tested to endure the toughest of all racesMany hours, days and months of testing have gone into development, and engineering has decided to use predetermined weight rider and snow cross racing for stock setupAfter uncrating your machine, be sure to test ride so setup can be determined for your riding style and characteristicsThe following are setup tips for your brand new Pro snowmobile
1Stock suspension setup for the PRO units are geared to 170 lb (77.18 kg) pro rider2Stock carburetion, clutching and gearing is for 0-3000 ft(0-900 m)3In this manual, there are numerous optional springs, optional carburetor jets, optional clutch weights, and optional gears to suit your riding preference and locationWhen changing to optional parts, always test what you have doneDo not be afraid to experiment4Be sure to use good quality traction products and pattern to maximize your traction and safety