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Polaris 700 twin overheats

After about 15 min my polaris 700 twin overheats, at one time it flooded the oil reservoir with fuel. I cleaned out the reservoir and added new oil, but it still overheats in 15 min. what part of the water pump do I need?

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  • desertntfox Jul 21, 2009

    thank you,
    I figured the head gasket was bad, but wasn't sure since it was over heating, but that would explain the fuel in the oil.

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  • Master
  • 6,784 Answers

HI. in this situation, you will need to replace all internals of the pump if possible. Individual replacements are possible but, replacing all water pump internals would be the better choice. The effected part at hand in your situation will be the Pump impeller and pump bearings (ball) as well. Be sure to replace the pump seal and O-ring seal when re-assembling the unit after these replacement parts are fitted.


In conclusion, you will need to replace the pump impeller and, pump bearings(ball). Replace the pump seal and O-ring seal as well..Most important will be the pump impeller.

Posted on Jul 20, 2009

  • Michael Masters
    Michael Masters Jul 20, 2009

    Concerning the fuel in the Oil reservoir, this is a strong indicator of a worn Cylinder head gasket. i would inspect the gasket for worn edges. the fuel leaking into the oil is a strong signal of a damaged head gasket. i would have this checked out asap, if possible. replacing it wouldn't hurt.

  • Michael Masters
    Michael Masters Jul 20, 2009

    One more thing here, have the thermostat inspected as well. your overheating issue may be caused by a defective or damaged thermostat in this case. normally, the water pump, if damaged, will leak but not all the time. i would check the operational value of the thermostat before you replace the water pump internals that i stated above.

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