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  1. 7

    Change Lower Oil on Selectric Now Won't Shift

    I changed my lower unit oil on my 71 50hp selectric shift. I used the required "Premium Blend" OMC lower unit oil (type C) -- I filled from the bottom fill hole until it came out the top hole. Now it won't shift out fof orward. Check resistance on leads to solenoids and had 8-9 on both...
  2. 7

    Should water be coming out here?

    I'm dealing with an overheat problem. I think the water tube to powerhead connection is leaking. Unless I misunderstand something. With a garden hose attached to the water tube should any water come back down through the opening at C in the picture?
  3. 7

    50HP Powerhead Removal

    I'm trying to remove the powerhead from my '71 50hp. I know I need to remove the bolts coming from above into cowl. I also think I need to remove the bolts coming from the mid-leg up into the power head. I've included pictures with notation. Any other bolts I need to remove?
  4. 7

    1971 50hp Evinrude - Overheating Saga

    I have done the following things to this engine: - Waterpump Kit - Carb Rebuild - Lower Unit Change - Remove water jacket cover, clean passages - Remove cylinder head, clean passages - Remove exhaust cover (inner and outer), clean passages - Replaced Thermostat - Added Tell Tale (as per forum...
  5. 7

    71 50HP Evinrude Overheating

    I have a 1971 50HP that is giving me fits and i'm not sure what step to take next. It overheats after idling for about 2-3 minutes. The hot horn sounds and I kill the engine. I believe i'm having a waterflow problem. I've replaced the thermostat and the waterpump assembly. When I...
  6. 7

    Identify this project boat

    Well, my bi-weekly search of craigslist for items "needing work" has landed me as the owner of a 1970 Tri-Hull. I got the boat, motor and trailer for $650 so now i'm back in project mode. The hull actually appears to be in great shape. I can't find any indicator of rot anywhere. The seats...
  7. 7

    Thermostat Change in 71 Evinrude 50hp

    I recently came into posession of what i'm told is a 1971 Evinrude 50hp (50173S) -- I'm told it sat for several years (4-5) since being used, but that the last time it was used it "ran great." I've been systematically going through several steps to bring the motor back. -Carb Kits on both...
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