Engine Rehab

[Fishinerie]

I have recently acquired a 16ft MFG with a 1971 Johnson 50hp outboard. It was given to me by my brother-in-law. What things should i do with this engine to get it up and running? There is no fuel tank and no battery (what battery should I purchase) also will the carbs etc need cleaning. Help will be deeply appreciated.

 

[JB]

Re: Engine Rehab

Howdy, FishnErie.<br /><br />Welcome to the Board.<br /><br />If you have or plan to have any electronics on the boat I suggest a dual purpose (start/deep cycle) marine battery. I have good luck with Everstart Marine batteries from Wal Mart.<br /><br />You can also pick up a 6 gallon fuel tank with fittings and fuel line for OMC and a set of "muffs" for out of the water cooling while you are there.<br /><br />Get yourself a Repair Manual. http://www.boatmotors.com/manuals.html <br /><br />Then replace the water pump impeller and try to start her up. <br /><br />If she doesn't want to start, check out the "Outboard Wont Start" article in the FAQ section.<br /><br />Good luck, and keep us up to date on your progress.

 

[R.Johnson]

Re: Engine Rehab

On a 1971 50 hp, I would'nt buy anything until I did a spark, and compression test, and even then pull the cylinder head. That old 50 horse twin was not noted for it's longevity. If you can, borrow a battery for these test's. Then, take it one step at a time

 

[ledgefinder]

Re: Engine Rehab

Make sure it shifts, also. The 1971 50 has the older hydro-electric lower unit, but the newer stator-charged powerpack ignition (that is, it's not battery CD). It won't shift until you have a battery hooked up.

 

[R.Johnson]

Re: Engine Rehab

That hydro-electric drive has to have the engine either spinning over with the starter, or the engine running. It will not shift out of forward at rest.