2007 Arctic Cat DVX/Utility 250 ATV Service Manual, Page 84Get this manual
CLEANING AND INSPECTING NOTE: If any part is worn excessively, cracked, or damaged in any way, the oil pump must be replaced
REMOVING
1Drain the coolant at the engine
1Clean all oil pump components2Inspect the rotors for scoring and gouges3Inspect the alignment pin, driveshaft, and driven sprocket for damage4Inspect the pump housing and cover for cracks or damageASSEMBLINGINSTALLING
1Place the rotors into the pump housing making sure the alignment pin is in the groove of the rotor2Place the cover onto the pump housing3Secure the pump with the Phillips-head screw coated with red Loctite #2714Install the oil pump into the engine (see Right-Side Components in Section 3)
2On the Utility model, remove the front rack; then remove the front cover and fender assembly (see Section 8)3Remove the upper and lower coolant hoses4Remove the cap screws and nuts securing the radiator to the frame5Disconnect the fan wiring from the main wiring harness; then remove the radiatorfan assembly and account for the grommets and collars6Remove the fanfan shroud assembly from the radiatorCLEANING AND INSPECTING