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  1. gnarbrah

    Lower unit leaking Johnson 6

    I just noticed a small drip of lower unit oil coming out from behind the prop on my 1975 Johnson 6hp. Just wondering if there are any tricks I need to know before I go tearing it apart. In all actuality I've never done it so if anybody can give me step by step I'd really appreciate it! Thanks...
  2. gnarbrah

    Motor too hot? small leak at t-stat cover

    Hello all - Still not sure if my 6 horse is running cool enough. Videos Below- I've changed the thermostat, impeller, lower unit oil and it seems to be pumping water good. There is a small leak at the thermostat cover (I'll get a new gasket soon) but the block seems awfully hot. I've read that...
  3. gnarbrah

    1975 Johnson 6hp.....what boat?

    Hi all - I just got my 75 6horse that I acquired from a friend of my fathers for $40 about 12 years ago (it was like new I might add) running again and now I just need the boat to put it on. I'm thinking a 12' v-hull is the way to go. Problem is I see alot more flat bottoms but I just like the...
  4. gnarbrah

    Johnson 6hp cooling update

    First off, thanks for all the info and help getting my 1975 6 back to running. I replaced the impeller and the thermostat and it fired up and started spitting water immediately. I let it run in the barrel for about an hour with no problems. The only concern I have is when I throttle it up the...
  5. gnarbrah

    Impeller direction

    I'm changing the impeller on my 75 6hp and I printed the exploded view of the lower unit off of johnson's website and I'm almost 100% sure I verified the direction the fins bend is as it shows on johnsons diagram. Just hoping someone with a little more knowledge can verify this for me. Also...
  6. gnarbrah

    Impeller Johnson 6hp

    Hi all - I'm getting itchy to run my 75' 6 horse. I have the impeller out and the wife is away tonight and I'm thinking of running by the boat store and getting the new one to give me an evening project. Question is what is the jabsco equivalent part#? The Sierra is 18-3001. Motor is a...
  7. gnarbrah

    1975 Johnson 6hp fresh out of storage

    Hello from a new guy. I'm extremely impressed with all the knowledge I've seen on here, you guys know your stuff. On to business, I acquired a 6R75R (Pretty sure thats a 75) from a friend for $40. Even if the thing was trash I think I did okay moneywise. I've had it for about 10 years and...
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