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Recent content by Mike from Atlanta

  1. M

    Johnson 25E77S Ignition Switch Question

    Carogator- you're absolutely right I completely forgot about that until the switches came in the mail. I was able to use the longer if the 2 switches and adjust it with the back nut so that it didn't stick out too far. I really like the look of the end result. Looks like it could've come from...
  2. M

    Johnson 25E77S Ignition Switch Question

    A couple of months ago I picked up this Johnson 25HP for $150. It was in overall good shape when I bought it. No water in the lower unit oil, 125 psi compression on both cylinders and started, ran, idled and pumped water even though it hadn't been run in over a decade. I did all the usual...
  3. M

    Johnson 25 HP tiller conversion questions

    I recently bought a 1977 Johnson 25 hp outboard (model 25E77S) that is set up for remote throttle/shift/steering control and electric start. I actually responded to the seller's ad for a different motor (1973 Johnson 9.5 hp) but couldn't pass up a great deal on the 25 hp. I bought both outboards...
  4. M

    Johnson 20R73 Surging at full throttle and running hot

    Thanks to all the help I got from this forum I recently finished getting a 1973 Johnson 20 HP running again after it sat in a shed for a couple of decades. Took it out for a trial run on the lake and overall it ran well. Started easily, idled smoothly, shifted into forward and reverse and pumped...
  5. M

    Need help bringing a Johnson 20R273A back to life

    Here's a photo of the water level this time. Several inches higher than last time.
  6. M

    Need help bringing a Johnson 20R273A back to life

    My old travel companion
  7. M

    Need help bringing a Johnson 20R273A back to life

    Bottom cylinder
  8. M

    Need help bringing a Johnson 20R273A back to life

    Pulled the cylinder head and im not sure how to interpret what I found. The cylinders are able to move freely through a part of the bore. Seems to hard stop right about when the top piston is even with the ports in the cylinder walls. The top of the cylinders and the part of the bore I can see...
  9. M

    Need help bringing a Johnson 20R273A back to life

    Well I pulled the lower unit off and it is still seized. Removing the spark plugs doesn't change that. What is the next step in trying to figure out what the extent of the damage is? Pull the cylinder head? I think I've attached a photo of my test tank. Hard to see in the pic but the water is...
  10. M

    Need help bringing a Johnson 20R273A back to life

    I recently bought a non-running 1973 Johnson 20 HP (20R73A). I have started the work of getting it running but I am new to outboards and I have a bunch of questions. I’m a fairly experienced shade tree motorcycle and small engine mechanic but I have never worked on outboards. I just bought my...
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