2008 Arctic Cat 400/500/650/700 ATV Service Manual, Page 335Get this manual
(500Manual Transmission) REMOVINGDISASSEMBLING
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Water Pump
1Press the mechanical seal with pump drive seal into the impeller by hand2Install the mechanical seal assembly onto the water pump shaft and secure with the cap screw, washer, and gasketTighten the cap screw securely3Place the water pump case into position and secure with the three cap screwsNote the position of the long cap screw from removal4Fill the cooling system with the recommended amount of antifreezeNOTE: While the cooling system is being filled, air pockets may develop; therefore, run the engine for five minutes after the initial fill, shut the engine off, and then fill the cooling system
Case Cap Screw Gasket O-Ring Impeller Mechanical Seal Seal Cap Screw Washer Washer Cap Screw Cap Screw Shaft wBearing Joint Pin 0738-290