"New" Johnson 9.9

[BainbridgeIslander01]

Hey everyone!<br /><br />My friend just picked up a Catalina 22 for free . He's asked me to help get the engine it came with (early 80's Johnson 9.9), running again. The boat sank twice at the dock a couple weeks ago and the motor went totally under for about 12 hours. <br /><br />At first, I was skeptical about getting this thing running (because it had been in salt water for so long) but remarkably, it cranks over well, cylinders are clean and reasonably worn and it even gets a decent spark.<br /><br />Now, I need help with a few things here. The throttle linkage is seized and two teeth on the gears that link the tiller arm to the motor have broken. Also, the lower unit needs to be serviced and the water pump replaced. Is that hard to do? Many minor moving mechanical parts have also seized like the clamps and the motor cover latch. Other than that, hopefully all it needs is a good cleaning and basic replaceables such as plugs, wires etc. He'd like to spend the least amount of money as we can (so refurbishment of parts is more appreciated than replacement), but he is prepared to spend it where necessary.<br /><br />My mechanical background is vast, but mainly with larger diesels, lawn mowers and car engines. This is the first outboard I have semi-seriously serviced. Any suggestions? If (when) I have more questions, I'll keep you all posted.<br /><br />Thank you very much for all of your help.

 

[Dhadley]

Re: "New" Johnson 9.9

Did you get it running after it was under? It really doesnt matter how long it was under, to a point, but you need to get the internals oiled and protected within four hours after air hits it.<br /><br />Theres a whole section in the service manual about how to flush a submerged motor and what to do. Basicaly you flush the contaminated fuel out and get it running and fog it a lot to protect the steel internal parts (crank, rods, besrings etc). The longer you can run it the better.<br /><br />Keep us posted!

 

[Solittle]

Re: "New" Johnson 9.9

Peter - The only hope of saving that motor is to tear it down completely and check all of the internal parts, bearings, etc for rust. I wouldn't get my hopes up if it were submerged in salt water for 12 hours two weeks ago. It shouldn't cost a thing to tear it down.

 

[BainbridgeIslander01]

Re: "New" Johnson 9.9

Thanks for the replies guys.<br /><br />I popped off the head today and thankfully there are no signs of rust except for the spark plugs themselves. I splashed some oil in there to keep things from seizing . I still have to check the crankshaft and connecting rods, but that looks like it will take a bit more surgery, and school right now is taking priority. Hopefully, I'll get to it this weekend. Also, what's involved in taking apart the lower unit? What should I check for as far as corrosion and lubrication goes down there? It shifts smoothly and the prop turns when cranked in gear. Sorry for all of the newbie questions, but I'm new to servicing outboards, especially the lower unit.<br /><br />Thanks for your help!

 

[BF]

Re: "New" Johnson 9.9

Hiya,<br /><br />Your friend would be wise to invest in a service manual since there's some wrenchin' to do on the motor... It'll come in handy for maintenance & troubleshooting anyway, so it's money well spent.<br /><br />Doing the water pump is a piece of cake.<br /><br />Here's a great article on that particular model... I found it very helpful when I got my "new to me" 15 hp.<br /><br />Great article on maintaing 15 hp's <br /><br />Are you sure that the teeth on the tiller are broken? They're not the same all the way around, there are some bigger blocks without teeth (so the gears only fit together one way). When I got my motor, the teeth were rounded, barely touching each other and would skip easily. I took the rod & teeth out of the tiller arm (do that by taking the grip off and sliding it out with the tiller tilted up). Then I used a couple nylon washers slipped over the shaft against the back of the gear to shim the shaft. That made the gears fit snuggly, and work well, even though the corners are still rounded.<br /><br />Hope this helps....<br /><br />Brent

 

[BainbridgeIslander01]

Re: "New" Johnson 9.9

Thanks for your reply.<br /><br />We know the teeth are broken because, well . . . they broke when we tried to turn it. They broke quite easily, probably because they had been weakend. What is meant by the term "fogging"? Does that refer to coating surfaces with oil?<br /><br />Thanks for your help!

 

[Solittle]

Re: "New" Johnson 9.9

Yes on the fogging.<br /><br />Being submerged should have done no damage to the lower unit since it is submerged when in the water.<br /><br />Try to get some kind of oil (WD 40 or equal) into the crankcase as soon as possible.<br /><br />Hope you get lucky.

 

[inquizito]

Re: "New" Johnson 9.9

Fogging fluid, sprayed into the cylinders, when the spark plugs are removed. May also be useful to spray into the carburetor preliminarily, with the butterfly held open, before removing it for 1) disassembly, 2) cleaning with 50-50 gas/kerosene mixture, 3) drying, and 4) respraying before 5) AND after reassembly

 

[bktheking]

Re: "New" Johnson 9.9

Peter - The only hope of saving that motor is to tear it down completely and check all of the internal parts, bearings, etc for rust. I wouldn't get my hopes up if it were submerged in salt water for 12 hours two weeks ago. It shouldn't cost a thing to tear it down.

I second this reply, it has to be torn down, once they hit water they slowly die even with lots of luck.

 

[JB]

Re: "New" Johnson 9.9

Six year old thread.