my 400 smokes also, mine is in the marks, i switched to polaris VES gold oil put a k&n filter on it and it doesnt smoke as bad, I only fouled 1 plug before i changed oil and that was in the winter plowing my plug still shows im running a bit rich. the oil pump is on the front of my motor and a cable goes to a little arm under the cover.
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96 Polaris SP 400
2003 Honda Rancher 350 ES
02 Mint polaris 250 trailblazer
2004 3500 Ram crew Cummins.
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