2009 Polaris Scrambler 500 4x4 2x4 factory service manual, Page 91Get this manual
ENGINE difficult, install two nuts on the end of the threaded rod and tighten against each other3Install the proper shim on the magneto end of the crankshaft4Place the balancer shaft in the PTO crankcase aligning the timing marks on the crankshaft and balancer gearsInstall the proper shim washer on the shaft5Inspect the oil pump sealing surface on the crankcaseApply light film of engine oil to the surface and install the oil pumpNOTE: Do not use gasket sealer on the pump mating surfacesNOTE: After engine is assembled and machine is readied for field operation, oil pump MUST be primedFollow oil pump priming procedure on Page 3.10Oil Pump Bolt Torque: 6ftlbs(8 Nm)
Pump Shaft End Play: .008 -.016 (.02-.04 cm)
PUMP SHAFT OIL SEAL INSTALLATION