Search found 353 matches

by CMOS
04 Nov 2019, 13:10
Forum: Motors
Topic: 1982 Johnson 15 HP repair
Replies: 17
Views: 1723

1982 Johnson 15 HP repair

Update: Got the Power Head back on the main cowling yesterday, and started the process of getting things buttoned up.

Just need to follow the pics I took as I took it apart to keep the right grounds, etc.

@Pappy

CMOS
by CMOS
26 Oct 2019, 12:34
Forum: Motors
Topic: 1982 Johnson 15 HP repair
Replies: 17
Views: 1723

1982 Johnson 15 HP repair

Pappy Done with the exhaust main tube. It went well. The grommet on the short water tube was getting pretty dry and brittle. I got it off the tube in pieces. The other still looked pretty good and was still flexible. Both were replaced. Right now the only thing I am missing is a Bypass Cover gasket...
by CMOS
26 Oct 2019, 11:47
Forum: Motors
Topic: 1982 Johnson 15 HP repair
Replies: 17
Views: 1723

1982 Johnson 15 HP repair

I do not see anything unusual from this end. Change all your fuel lines while you have the powerhead off. Lots easier. Also change the overboard indicator line as that can be a bit of a pain when the powerhead is in place. Good time to lift the lower pan off and do a good deep cleaning of the pan a...
by CMOS
25 Oct 2019, 19:24
Forum: Motors
Topic: 1982 Johnson 15 HP repair
Replies: 17
Views: 1723

1982 Johnson 15 HP repair

If the head gasket was a "shiny" one then nothing is needed. Usually those had a clear plastic coating you had to peel off but not always. If it was plain and porous then yes, OMC Gasket Sealer is recommended. It was OMC, with the metal inserts.... Any comments on the pics above? Normal? CMOS
by CMOS
25 Oct 2019, 12:27
Forum: Motors
Topic: 1982 Johnson 15 HP repair
Replies: 17
Views: 1723

1982 Johnson 15 HP repair

Pappy Exhaust covers off. Nothing striking that I can recognize. Pappy? Anything look out of ordinary? Note where my thumb is pointing in the one pic. That's a small circulation hole that was plugged with some minerals/junk. Right now I have the Outer and Inner cover plates soaking in gasoline so I...
by CMOS
25 Oct 2019, 06:55
Forum: Motors
Topic: 1982 Johnson 15 HP repair
Replies: 17
Views: 1723

1982 Johnson 15 HP repair

Get your grommets and replace both of them while there. Check your surfaces on the exhaust . Did you see evidence of water on the piston top? I don't see a photo or any mention of it. You are doing fine and well on your way to a successful service on this engine. Once you have your grommets in plac...
by CMOS
24 Oct 2019, 16:02
Forum: Motors
Topic: Woke up a 200XP Evinrude after over two decade sleep.
Replies: 3
Views: 440

Woke up a 200XP Evinrude after over two decade sleep.

Pappy, I'm curious as to 1) why it sat for 2 decades and 2) what was the impetus to fire her up now?

Sounds like she wants to run!


CMOS
by CMOS
24 Oct 2019, 15:57
Forum: Motors
Topic: 1982 Johnson 15 HP repair
Replies: 17
Views: 1723

1982 Johnson 15 HP repair

Back on this now that it's a bit cooler. Today I pulled the Bypass cover just to take a peek at the piston walls on that side. Both looked equal and no scoring of any kind. Repainting the cover while I have ti off... I also replaced the Head Gasket after I resurfaced the Head seal surface with 3 dif...
by CMOS
02 Jun 2019, 19:12
Forum: Motors
Topic: older 4 hp evinrude year
Replies: 7
Views: 940

older 4 hp evinrude year

I really like old motor stories.....


CMOS :D
by CMOS
02 Jun 2019, 09:39
Forum: Motors
Topic: 1982 Johnson 15 HP repair
Replies: 17
Views: 1723

1982 Johnson 15 HP repair

Possible sources for water intrusion into one or both cylinders can be: Cylinder head gasket Exhaust cover side gasket Cold running engine operating in cold water. More prominent during low speed operation. Lack of thermostat. Probably not your issue. Good time to replace the thermostat though whil...
by CMOS
31 May 2019, 16:48
Forum: Motors
Topic: 1966 9622a evinrude sportwin
Replies: 1
Views: 395

1966 9622a evinrude sportwin

***If*** she's got good and equal compression on both cylinders, you have a great motor. My first motor was a 1966 Johnson 9.5 (identical to yours), and it was a fantastic motor. Never let me down. Ran like a champ and started within 2 pulls regardless if the temperature was 40 degrees or 95. Take g...
by CMOS
31 May 2019, 15:14
Forum: Motors
Topic: 1982 Johnson 15 HP repair
Replies: 17
Views: 1723

1982 Johnson 15 HP repair

Howdy All, It's been a while since I worked on this motor but it's time to dig into it once and for all. Here's a link the the old thread: https://www.tinboats.net/forum/viewtopic.php?f=4&t=42830&start=30 Today I managed to pull the power head, which to my surprise lifted right off with little or no...
by CMOS
25 Feb 2019, 10:26
Forum: Motors
Topic: 25 HP Merc carb float issue, or not?
Replies: 1
Views: 525

25 HP Merc carb float issue, or not?

Howdy All, In preparation for a trip next weekend I pulled the boat out of the barn and fired up the 1998 25HP Merc to let her run a bit. Looks like the carb float was stuck in the down position, as fuel came dripping out of the cowling when I primed the fuel bulb - first time that happened. I final...
by CMOS
24 Feb 2019, 20:56
Forum: Motors
Topic: Reverse issue mercury 25 hp
Replies: 8
Views: 1199

Reverse issue mercury 25 hp

OP, Do yourself a big favor - put a "Side Shift" kit in that and never look back. I have a 98 25 HP Marc and had all sorts of trouble with the tiller shifter mechanism. Had a Side Shift installed and all is well and running perfectly. There are far too many things to go wrong with these tiller shift...
by CMOS
17 Jul 2018, 09:33
Forum: Boat House
Topic: 1975 Sea Nymph 16R restoration - transom corner brackets
Replies: 2
Views: 739

1975 Sea Nymph 16R restoration - transom corner brackets

Another angle: If you can find a small metal fabrication shop nearby you may be able to get them to fabricate a coupe for you. I have seen others on this site do this, with great success. A fabricated one doesn't have to look exactly like the old design. It just needs to provide support for those tr...