1998 Johnson 200 Ocean Runner

[cwnifong@wans.net]

Model J200TXECM (25" shaft). Broke down today and mechanic says the bracket the flywheel & stator are mounted on actually twisted (turned) on top of the powerhead. Claims this is a pretty common problem with these motors and 6 times out of 10 it bends the crankshaft. Don't know much about outboards, but it did look bad. Does anyone know if this is common? Motor only has 125 hours on it.

 

[Dhadley]

Re: 1998 Johnson 200 Ocean Runner

I think what you are talking about is the upper main bearing housing. I would not say it's common but it does happen. If the bolts backed out you may be able to just put the housing back in it's proper place and rebolt it using Loctite on the bolts. Replace the o-rings and seal. I don't think that would bend the crank. Especially if the flywheel is still OK.<br /><br />If the bearing dropped out, the crank may be damaged and need to be replaced. <br /><br />Good luck!

 

[cwnifong@wans.net]

Re: 1998 Johnson 200 Ocean Runner

I think it is the main bearing housing. The bolts did back out... I found three of them in the bottom of the engine cover along with a small (band-aid size) twisted piece of shiny sheet metal that looked like some sort of tab or collar. The flywheel "looked" ok and the starter turned the flywheel fine. There were some metal shavings on top of the "block" (case?) where I'm assuming the bearing housing ground into it when it rotated. If the crank is damaged is it likely stop there or could it have damaged pistons/cylinders?<br /><br />THANKS FOR THE REPLY!!!

 

[jungnim2]

Re: 1998 Johnson 200 Ocean Runner

you take the flywheel off ?<br />wen not take it off and look ob the magnet broke

 

[cwnifong@wans.net]

Re: 1998 Johnson 200 Ocean Runner

Mechanic got the flywheel off today. Doesnt look as bad as I thought. He did notice two small (half the size of a bb, but shallow) pits on the crankshaft surface right where it mates with the upper main bearing. So I'm looking at a $750 repair (bearing housing, stator...) or a $3500 repair (if I use a new crankshaft). I'm leaning torwards the $750. The pits are small and shallow and I'm thinking there's enough surface area on the shaft where it shouldn't matter. He thinks it should "probly" work.<br />Any thoughts or experience would be greatly appreciated.

 

[MERCMAN]

Re: 1998 Johnson 200 Ocean Runner

TO BAD OMC WENT BANKRUPT BECAUSE THEY WERE COVERING THIS PROBLEM UNDER WARRANTY EVEN IF ENGINE WAS OUT OF WARRANTY BECAUSE THERE WAS ENGINES GETTING OUT OF THE FACTORY WITH NO LOCKTIGHT ON THE UPPER END CAP BOLTS BUT I GUESS THAT'S WHY THEY ARE NOT HERE ANYMORE. BUT I STILL ENJOY WORKING ON THEM.

 

[AUGIDAWG]

Re: 1998 Johnson 200 Ocean Runner

I have a 1995 Johnson 200 Ocean Runner.
Last Sunday my engine sheared off all six bolts on this bearing housing.

Does anyone else have a estimate of the damage, and dollar value?

The motor will idle, but when throttle opens, the plate rotates and shuts down.
The top plug was black, but no signs of aluminum from the piston, or any other metal.
Fly wheel is ok.
I did notice a vibration the last 3 times I had been out.
It still ran fine at 5800 rpm.
I should have know something was wrong when on 2 seperate occasions, I found a sheared off head of a bolt in the bottom of the cowl.
I looked for where they might have come from, but couldn't figure it out.
Now I know.