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#3
09-19-2010, 10:33 PM
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I COULD be wrong..so don't take this as gospel.. but....
On my old boat, which had an I/O setup there were 2 water pumps.. one in the lower unit which pumped raw water to the heat exchanger, and a second on the engine, which circulated fresh water from the heat exchanger through the engine. That pump was located on a bracket on the front of the engine and was driven by a v-belt running off the crankshaft dampener pulley. Not sure if your set-up is the same, but to me it would seem like the logical place to start looking.  PS...Follow the hoses from the heat exchanger to your engine.. one of them probably goes to the pump.
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1987 V20 w/1987 150HP Yamaha on a Shoreland'r Trailer 1978 16.5 Airslot w/1996 120HP Force on a Four Winns trailer 1996 V21 w/1993 200HP Mercury on a Shoreline Trailer All towed by a 5.7L Hemi Durango. If God didn't have a purpose for us we wouldn't be here, so Live simply, Love generously, Care deeply, Speak kindly. (Leave the rest to God)  Silence, in the face of evil, is itself evil. Not to speak is to speak, not to act is to act. God will not hold us guiltless. 
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