2009 Polaris Sportsman 850 XP EFI EPS Service Manual, Page 128Get this manual
ENGINE CamshaftCarrier Assembly
1Lubricate all camshaft lobes and bearing journal surfaces with Premium Starter Grease (PN 2871460)
CamshaftCamshaft Carrier Installation
12Loosen all valve adjuster lock nutsTurn adjuster screws out (counterclockwise) until they lightly seat against rocker arm
NOTE: DO NOT force screws against rocker armThe adjuster pivot ball may be damaged if forced3Rotate crankshaft in direction of rotation until Top Dead Center mark (B) on flywheel is aligned with crankcase parting line (C)This is TDC for MAG side cylinder234Place camshaft in cylinder headLubricate rocker arms, rollers, and shafts with engine oilLay out in proper location as marked upon disassemblyAssemble camshaft carrier with rocker arms and shaftsSlots (A) must face outward of carrier to allow bolt installation and to properly orient the oiler holes in shaftsRotate camshaft until pin (D) is in 10:00 position10:00