2005 Ski-Doo Tundra, Skandic, Expedition Shop Manual, Page 221Get this manual
Section 04 ENGINE (4-TEC) Subsection 04 (LUBRICATION SYSTEM)
Fit the engine oil pressure regulator by pushing it carefully with an aluminum or brass rodThe engine oil pressure regulator must be flush with the crankcaseFollowing installation check the pressure regulator piston for easy movementNOTE: At installation always replace the O-ring no36, and fit it with grease
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OIL PUMPS
The oil pumps are located on the engine alternator side (behind ignition cover)The engine is equipped with two oil pumps, pressure oil pump and suction oil pump
1Allen wrench
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O-ring Valve seat Pressure regulator piston Spring
Inspection