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25 HP johnson

Discussion in 'Boats and Motors' started by ltfd596, May 27, 2005.

  1. I am having a problem with my 1997 25 h.p. Johnson. When I first start it up ot runs great, and as long as I am running it pretty well open the water just pumps out fine, but the problem is when I am trolling and the motor is at idle, these i not water pumping and it gets hot... Why will the water pump at mid-and - ful throtle, but not water at an idle? Any idea, and how do I go about fixing it?

  2. Sounds like it's time for an impeller change. Has it ever been done? It's not a hard job, but you should pick up a manual to walk you through it.

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