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    Throttle cable adjustment 72 Merc 500

    The boat and motor was given to me by a good friend. He says it was working when it went out of service 10 or so years ago. I believe him. Since I’ve never used the controller before I thought its full range forward would be horizontal with its base, but I discovered yesterday that it goes past...
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    Throttle cable adjustment 72 Merc 500

    I’m just not getting this to work. I’m thinking maybe the controller. I’m getting lots of reverse throttle but much less forward. I only need to go 1/4 back to increase throttle but need to go all the way forward for just a little. Will any simple controller work as a replacement. All this one...
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    Throttle cable adjustment 72 Merc 500

    I’m having a problem adjusting the throttle cable. If I have the magneto (throttle plate) set to idle. Then if I adjust the cable so that it doesn’t pull the throttle plate forward then I have very little throttle gain even at full throttle. If I tighten the cable more then I’m off the idle. Im...
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    1970s Merc 500 water leak top of leg

    I just want to thank @racerone once more. I took the pump apart one more time and found the pipe going into the pump didn’t want to seal properly. I got that fixed and now the water shoots out of that test hole on the top of the motor as well as a nice flow from the peepee hole. I’m having a...
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    '85 Sierra 16.5' Fiberglass - Floor / Transom / New Layout

    I’m in the process or redoing my floor as well. On mine I found that the initial design was flawed. They used a void under the bottom of the centre transom as a water drain from the front of the boat to the back bilge. That void rotted the transom from the bottom up. So this time I fibreglassed...
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    1970s Merc 500 water leak top of leg

    Yaa-hoo. Success. I have water coming out of the Peepee hole. There was an old impeller blade lodged in someplace. I sent lots of air and water through the system before I put it together the first time. It had to be stuck pretty good wherever. So I gave it an extra specially hard flush this...
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    1970s Merc 500 water leak top of leg

    I want to say thanks for your help. It’s been quite helpful. I had no idea that water in that area would be expected. If it came across in any way that I wasn’t listening and learning, I apologize, because I definitely was.
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    1970s Merc 500 water leak top of leg

    I don’t want to take it all the way to the lake (it’s not exactly close) unless I’m at least a little sure that it’s been fixed.
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    1970s Merc 500 water leak top of leg

    Really. 6”? I had the water level above the bolts so thought all the intakes and water pump were well covered. Maybe not. So it’s ok to see water in that area. Ok, well maybe I just have a bad seal at the water pump or I’m just not in deep enough water. How much pressure does the water pump...
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    1970s Merc 500 water leak top of leg

    Hi guys! I was given this motor and was told that it hadn’t been used in over a decade but did run back then. I’ve done a lot to it and it seems to run pretty well other than it’s a smoky pig. After replacing the water pump impeller I’m still not getting water from the peepee hole. It’s not...
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