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  1. J

    Can I decarb in a barrel?

    I have read many posts about decarbing with Seafoam. The instructions include running a gallon of mixed gas with 3/4 can of Seafoam at WOT. If I remove the prop, can I do the same in a barrel? My logic is I need to get the RPM's up and if I remove the prop, I should be able to accomplish that in...
  2. J

    3M Scotchkote for aluminum leaks

    Cabelas sells a 3M Scotchkote Hot Melt Patch Compound for sealing aluminum boat leaks. It is a heat activated epoxy designed to wick into seams. I am interested in anyone who may have used this product, how well it worked or anyone who may have some information on how well this product works.
  3. J

    Need help with impellor replacement

    From the start, I'll let you know I am a novice at this so type slow and give me some help. I will soon tackle, based on your advice, an impellor replacement on my 1971 Johnson 9.5, model 9R71. I did buy a manual and want to make sure I do this right. I am actually planning to install a water...
  4. J

    How much to tune up my 1971 9.5hp?

    I plan to take a shot at tuning up this outboard myself, but wanted to know how much I would expect to pay to have this 71' 9.5 serviced at a shop. I need new points, plugs, condensors, impellor and a general tune up (carb adjust). I do not believe it needs a carb overhaul. This motor has been...
  5. J

    Unleaded versus leaded gas

    Years ago, there was no such thing as unleaded gas. Now, we can't find it. Are there any performance issues using unleaded gas in older motors? Would adding lead additives to oil/gas mixtures improve performance and motor life?
  6. J

    Is my 1971 Johnson 9.5 a gem or a dog?

    I recently acquired a 71 Johnson 9.5 and have not had it in the water yet. I have been asking for information on it through various posts. It is interesting to me that comments on this motor range from "one of the best little motors around" to "one of the weak links in the Johnson product...
  7. J

    Will decarbing also clean varnish?

    I have read many posts about removing carbon using Seafoam. The "recipes" for decarb include adding 3/4 can of Seafoam to one gallon of premixed gas, and, using the remaining 1/4 can squirting a shot in the cylinders and spraying the rest down the carb throat till the motor almost stalls. Then...
  8. J

    How do I set timing?

    The service manual for my 1971 Johnson 9.5 calls for the use of a special tool that mounts on the crankshaft. There are timing marks on the armature plate this tool aligns with. Is there a way to set the timing without this tool?
  9. J

    Running motor in a tank

    I have always adjusted my 9.5 Johnson on the boat and in the water. To run it in a tank, is a 55 gallon drum the minimum I should use? What do you typically test outboards in?
  10. J

    Boat Leaks

    I have a Starcraft aluminum fishing boat. It has developed a small leak at a rivet. It is under the seat and difficult to get at. Is there a way to reseal or plug a leak at a riveted joint?
  11. J

    Why replace my Impeller?

    I have a 1971 Johnson 9.5 that has net been used for 5 years. It ran fine last time it was out and is used in fresh water. I have been advised to replace the impeller as well as do a general tune up. Why is it important to replace the impeller?
  12. J

    Should I rebuild my 1970 9.5 Johnson?

    I came across a 1970 Johnson 9.5. It has not been used for 5 years, only 3 times a year prior to that and has been garaged. It is used in fresh water. I know quite a bit about car engines but have never torn into an outboard. I plan to get a service manual, but want to know if I am in over my...
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