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  1. C

    gear ratio help

    I just picked up a 4 four winns 170 horizon (17 feet long) with a 185 hp 4.3 mercruiser. The out drive that came with the boat ( not on the boat) is a 1.98 R. I do not believe this is the right drive for the boat. All the research I find points me to a ratio of 1.84. This Gears in the top are...
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    1975 650 knocking sound

    I have bought a 75 650 that had not been run in years. The carbs proved it. I have them clean and back on. I fired up the engine and it sounds like I have a tinny knock just below the flywheel. I have not ran the engine above idle so I do not know if it will go away at a high RPM. The motor has...
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    70 hp thermostat location

    where is it located and how do I remove it if is is inside the cylinder head
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    hp question on kayo 24 ft pontoon

    OK guy's and gal's I have a 24 ft kayo pontoon boat that I cant seam to find much information on. I am wondering if I can put a older 70 hp motor on it. the motor is heavy and will the boat support it???? The motor is a old chrysler that runs like a top and has good compression. We just mover...
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    1973 25 hp water in cylinder

    I just got a 73 25hp evinrude on the back of a pontoon boat that has been sitting for some time. I had no spark and put in points and condenser. This fixed my spark problem. I put in back on the boat which is in the water and got it started for about 15 seconds. Then it quit and will not start...
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    25 hp with no spark

    I have a 25 hp model 25553b and I have no spark. This thing has been modified a little. It now has a electric starter not sure if it came with that. The key switch is missing and I don't see the wires for it. I am looking for a wiring diagram for this. Do I need a battery for spark?? I believe...
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