2003 Polaris 3 PRO X Factory Service Manual, Page 8Get this manual
GENERAL INFORMATION Trail Set Up
All 2003 440 Pro Liquid units that are sold for trail use will need to have Head Kit PN 2202188 installed before the customer rides the sledThis Head Kit is designed to run on Premium 92 octane nonoxygenated fuelTo keep the warranty valid, this Head Kit must be in place on the 440 Pro Liquids that will be sold for trail useThe 440 Pro Liquid comes stock with high compression head that requires 110 Octane fuelIf the head is not changed for Premium 92 octane fuel, engine damage will occurWarranty claims will not be accepted for damage that occurs on trail use 2003 440 Pro Liquid models if this procedure is not performedNOTE: Head assembly PN 2202188 is not legal for ISR sanctioned race use
Parts Required: Kit- Octane Cylinder Head PN 2202188 -92
All parts required to perform this installation are included with kit PN 2202188Parts included are (1) Head PN 3021343, Oring PNs 5411199, 5411359, 5411411, Rubber Seal PN 5411465, Thermostat Gasket PN 5830113, and clutch weights for use at 03000 ft (3) PN 1321730Please follow the instructions, clutching, and jetting recommendations included in the kitJets are not included in this kit and are not warrantablePlease install this Head Kit PN 2202188 on all 440 Pro Liquid models that will be used for trail ridingThe installation of this kit must be performed by an authorized Polaris dealer