berkeley 12jc

« **on:** March 03, 2012, 09:14:28 PM »

I just picked up a larson boat with 455 olds,it has a berk12jc in it. The person I bought it from said that the jet doesn't work,its been sitting for about a year.My son & I noticed that there was a bunch of twigs and other garbage in the output side of it, we cleaned it all out and then got inside the boat and took off all the inspection covers.We looked inside and everything looked great,we greased all zerks,u joints,shafts,impeller all look good,we were wondering what else should we do b4 trying to fire it up,like more thorough cleaning,should we use some air to blow through the inspection shaft by the impeller,any lube sprayed or oils added anywhere?maybe get some water and wash through it? We are thinking try the little things first,does anybody have any tips or ideas that they might do or know of to try any info would be greatly appreciated. Thanks

« **Reply #1 on:** March 03, 2012, 09:37:57 PM »

I bought one that had been sitting for over 2 years and just removed the hand hole cover and checked the looks of the impeller and made sure there was no play in the shaft, lubed all grease fittings. Built motor and took to lake to give it a try, I thought if the jet was no good then I would r&r motor and rebuild jet. Oh yea, remove both plugs on rear of jet and fill with oil first.

« **Reply #2 on:** March 04, 2012, 06:54:37 AM »

If the oil leaks out fast(gear oil), pull the bowl and replace seal or put a zerk on it and fill with grease. I have an old c bowl I did that to and it was fine(zerk/grease).

« **Reply #3 on:** March 04, 2012, 09:31:18 AM »

Quote from: david frye on March 03, 2012, 09:14:28 PM

I just picked up a larson boat with 455 olds,it has a berk12jc in it. The person I bought it from said that the jet doesn't work,its been sitting for about a year.My son & I noticed that there was a bunch of twigs and other garbage in the output side of it, we cleaned it all out and then got inside the boat and took off all the inspection covers.We looked inside and everything looked great,we greased all zerks,u joints,shafts,impeller all look good,we were wondering what else should we do b4 trying to fire it up,like more thorough cleaning,should we use some air to blow through the inspection shaft by the impeller,any lube sprayed or oils added anywhere?maybe get some water and wash through it? We are thinking try the little things first,does anybody have any tips or ideas that they might do or know of to try any info would be greatly appreciated. Thanks

If your jet has been stored and not exposed to the elemnets it will likely be fine , what you have done was proactive and theres not much more you could do sans disassembly and rebuilding , rinsing thru it couldn't hurt, don't over grease it and double check the bowl oil Tom

« **Reply #4 on:** March 04, 2012, 01:04:36 PM »

I have a good JC very smooth 3 hundo pm if interested

david frye

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