Search results

  1. T

    Please help 1975 mercury 200 20hp

    My thoughts too. I didn’t test it that way at first because I didn’t have one. So i posted the question. While i was back out looking it over my neighbor walked over with his barrel.
  2. T

    Please help 1975 mercury 200 20hp

    Idk, i thought everything looked good? But if it was missing i might not have noticed. I ditched the muffs and borrowed a 55gal can from my neighbor. It pees perfect
  3. T

    Please help 1975 mercury 200 20hp

    Ok i got it all back together. Hooked a water hose and clamp over the water intake. Started it up. No water peeing out. So i shut it right back off. Not sure if i got the water pump hose hooked up correctly or maybe the impeller is turned over 180 degrees, if that even matters. I know it peed...
  4. T

    Please help 1975 mercury 200 20hp

    Looks like it is ID 5.5mm 1.7mm thickness
  5. T

    Please help 1975 mercury 200 20hp

    I just got the new gearcase in yesterday. Changed the impeller today on lunch break. I noticed the one i got today had an oring on one of the shafts. The shaft is item 16 in the pic, the oring is item 17. The oring was falling apart, and mine didn’t even have one on it. Oring part number is...
  6. T

    Please help 1975 mercury 200 20hp

    I got it off, there was a hidden nut. Thanks for the help. I’ll keep updating my progress
  7. T

    Please help 1975 mercury 200 20hp

    I think i found it. On the diagram at least. I have been looking at it on my phone. I pulled it up on my giant monitor at work. Looks like item 6 i have not taken off. Says it is a nut.
  8. T

    Please help 1975 mercury 200 20hp

    There could be, i am only seeing 2 in the diagram for this year. I also can’t find the 3rd one. Any idea where to look?
  9. T

    Please help 1975 mercury 200 20hp

    Ended up being a 1/2 lock nut. I got it off, And the one one top, but still can’t get the gearbox off
  10. T

    Please help 1975 mercury 200 20hp

    Here is what i found from a parts diagram 34933 NUT, DRIVE SHAFT HOUSING TO GEAR HOUSING (7/16\")
  11. T

    Please help 1975 mercury 200 20hp

    Good thought, but it definitely is just too big. Hard to see there but it won’t even start in the hole. I notice it doesn’t look like a normal nut. I’ll keep digging and see what i can find out about it
  12. T

    Please help 1975 mercury 200 20hp

    Anyone know the proper socket to take the gearbox off? It is a 9/16 on top. I am guessing the bottom is too, but my thinest wall socket is too thick to fit.
  13. T

    Please help 1975 mercury 200 20hp

    Awesome thanks for the help!
  14. T

    Please help 1975 mercury 200 20hp

    What oil do i need for the gear box? I seems there are a few different weights and types. Can’t seem to find what mine needs thanks
  15. T

    Please help 1975 mercury 200 20hp

    Yeah, that’s what i figured, just thought i would through the idea out there. As soon as I don’t someone would say something like all you need is a shaft straightener…. Yes i know that is not really a thing…. :)
  16. T

    Please help 1975 mercury 200 20hp

    I was thinking about trying to straighten my shaft, but am afraid banging on it can’t be good for the gearbox. Also heating would be a good way to damage the seals. I also figure i will never get it very straight especially without taking it out. Even then it os doubtful.
  17. T

    Please help 1975 mercury 200 20hp

    Thanks. I think i am going to but the gearbox on ebay. The one i found in my state is about 4 hours away, and I can’t work out a time to meet the person. It has a prop, and the shift handle i need, along with a few other odds and ends you get from having a complete second unit. But I can’t make...
  18. T

    Please help 1975 mercury 200 20hp

    Ok got instructions on the water pump. Looks easy enough. And i should be able to use the one i have if his isn’t and good
  19. T

    Please help 1975 mercury 200 20hp

    Is the water pump in the with the gearbox? I found one a little over 3 hours from me, motor needs rebuilt, but gear box is good. He doesn’t know what condition the water pump is in because it has been setting for 3 years. It was rebuilt before that. I know my water pump is good. Just trying to...
  20. T

    Please help 1975 mercury 200 20hp

    What prop should i be looking for? Mine was a 2 blade. I don’t know what pitch it is. Should i look for a 2,3,or 4 blade prop? Looks like mine is a 8 or 9 spline (i’ll count when i get home) Just not sure what i need. Thanks
Top