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Go Back   SailNet Community > On Board > Gear & Maintenance
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  #11  
Old 04-23-2008
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...since there is no reverse, i figured a gear issue wouldn't be that complicated...this will be the first time i've ever opened up an outboard engine, and i'm looking forward to revitalizing this little 3hp for a 12' portabote...
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Rockter will become famous soon enough
3 horse power, twin cylinder?

Twin?

What size are the pistons?

I trust it has a single carb?
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Old 04-23-2008
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the pointy end is the bow
 
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I'm using mine to run a 10' portabote too. That 3 hp will get me and the dog up on a plane with some power to spare. Not me and the wife though.
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Last edited by erps; 04-24-2008 at 12:02 PM.
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Quote:
Originally Posted by Rockter View Post
3 horse power, twin cylinder?

Twin?

What size are the pistons?

I trust it has a single carb?
it's a 3HP Johnson model J3BRCEC, 2 cylinders
its not a Twin, i believe it went by the name of Ultra
size pistons: i don't know
1 carb
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The pistons are about 1-1/4'', they are tiny. As for the lower unit issue, it could be the rod that shifts is bent so maybe come loose. If you do find that the lower unit is bad, ive got spares to sell. Ive got loads of spares for these motors. Ive also got the shift linkage if its bent or broken.
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Originally Posted by SVDistantStar View Post
The pistons are about 1-1/4'', they are tiny. As for the lower unit issue, it could be the rod that shifts is bent so maybe come loose. If you do find that the lower unit is bad, ive got spares to sell. Ive got loads of spares for these motors. Ive also got the shift linkage if its bent or broken.
SVDistantStar...i'll be in touch for some of your spare parts (and intimate knowledge of this engine)...let me open up that midsection of the li'l guy and see what's going on in there first...
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Old 04-25-2008
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1989 johnson 3hp midsection repair

well i've opened up that bottom section (and it wasn't all that complicated in there), and i confirmed that the shift rod is bent near the upper half; so i'm gonna need a new (or used) one...

i'm still not sure how the shift works. i assume that it is normally always in gear, so when the rod is pushed down, it either presses the prop shaft out of the way or hits a spring on the prop shaft to loosen its tension or something...

that rod was bent due to sloppy maintenance by previous owner; i think it wasn't put in that hole before it was put back together...
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Get a service manual for your engine. On Ebay, you can get a scanned version for around 20$ including shipping.
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Originally Posted by svey View Post
Get a service manual for your engine. On Ebay, you can get a scanned version for around 20$ including shipping.
already on order from ken cook...i couldn't find anyone who could provide reprints of the model specific shop manual...
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Can you straighten it? Wouldn't cost anything but your time to try?
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