2003 Polaris Sportsman 600, 2002-2003 Polaris Sportsman 700 Service Manual, Page 77Get this manual
ENGINE VALVE SEAT RECONDITIONING CONT 8Clean all filings from the area with hot soapy water, rinse, and dry with compressed airWARNING
Wear eye protection or face shield when working with compressed air during cylinder head disassembly and reassembly9Lubricate the valve guides with clean engine oil, and apply oil or water based lapping compound to the face of the valveNOTE: Lapping is not required with an interference angle valve job10Insert the valve into its respective guide and lap using lapping tool or section of fuel line connected to the valve stem
11Rotate the valve rapidly back and forth until the cut sounds smoothLift the valve slightly off of the seat, rotate 14 turn, and repeat the lapping processDo this four to five times until the valve is fully seated, and repeat process for the other valve(s)12Thoroughly clean cylinder head and valves