2008 Polaris Sportsman 500 EFI/X2/Touring/500 H.O. Service Manual, Page 110Get this manual
ENGINE gearApply Starter Drive Grease to Bushing install the cover and boltsRocker Cover Bolt Torque: ftlbs(8 Nm)
Thermostat InstallationApply starter drive grease to the drive bushing in the crankcase and all moving surfaces of the starter drive mechanismInstall the starter driveInstall recoil housing gasket and recoil housingStarter Drive Grease: (PN 2871460) Install the thermostat with one of the air bleed holes positioned next to the upper thermostat cover bolt hole as shown
Rocker ShaftRocker Arm Assembly Installation
123456Assemble rocker arms, rocker shaft, and shaft supportsInstall and tighten rocker arm shaft locating boltApply starter drive grease to the cam lobes and cam follower surfacesRotate the engine until the cam lobes are pointing downwardBe sure the dowel pins are in place and install the rocker shaft assemblyApply light film of engine oil to the threads of the bolts and tighten evenlyRocker Shaft Support Tower Bolt Torque: ftlbs(12 Nm) Rocker Shaft Locating Bolt Torque: ftlbs(8 Nm) 789Adjust valves according to the valve adjustment procedure found in Chapter 2, MaintenanceApply clean engine oil liberally to the valve springs, cam chain, rocker arms, and camshaftPlace new rocker cover gasket on the cylinder head and