1973 18 hp Evinrude starts out running great, but slips out of gear

[scuba_redneck]

Re: 1973 18 hp Evinrude starts out running great, but slips out of gear

Well guys... THE GEARS ARE FINISHED AND THE LU IS BACK TOGETHER!!!!! I am letting the permatex set up over night before I fill the LU with gear oil. Tomorrow I will take it out on the river for its test run. I will post results as soon as I get back.

Quick recap of what I am testing/looking for tomorrow:
1. Gear slippage in forward
2. Idle, continuity and speed
3. Running power at WOT
4. A FINISHED MOTOR!!!

Wish me luck!

 

[kfa4303]

Re: 1973 18 hp Evinrude starts out running great, but slips out of gear

Good luck!!!! Keep us posted!

 

[scuba_redneck]

Re: 1973 18 hp Evinrude starts out running great, but slips out of gear

Well guys, the happy trails song has been playing around the shop here lately. The new ignition coils, gear resurfacing, and lower unit seal job all went in beautifully and I now have a fully functional 1973 18 hp evinrude! Thank yall guys so much for your help! I will definitely be back when I start again on my 10 hp evinrude. I am about to go out in it today and try to catch some crappie and catfish out of the ole starcraft. Until next time, scuba_redneck out!

 

[kfa4303]

Re: 1973 18 hp Evinrude starts out running great, but slips out of gear

SWEEEETTT!!!!! Vroom-vroom! Happy Boating! Get us some pics of that old gem running. Holler when you start on that 10 hp too. I had a '61 Johnson 10 hp that was a great little motor. Although, they were also prone to clutch dog issues, but if it is a pre 70's model it will have the much simpler and more reliable OMC "universal magneto", which is much less hassle. Here are some great links to get you started on that one. Congrats!

http://www.sschapterpsa.com/ramblings/johnson_QD.htm

http://www.outboard-boat-motor-repa...on 3 HP 1952-1967 Ignition System Tune-up.htm

 

[scuba_redneck]

Re: 1973 18 hp Evinrude starts out running great, but slips out of gear

Oh yeah, I almost forgot to tell ya'll that the smoking issue that I had before is also gone at all rpm ranges. It idles cleanly now. KFA, the 10 hp is a 1960 model. I have a thread here about it so far on the forums somewhere floating around.

 

[kfa4303]

Re: 1973 18 hp Evinrude starts out running great, but slips out of gear

Glad the smoke issue is gone. Mine smokes pretty good in the test tank, but hardly any on the water, and I run 24:1 fuel mix. It would probably smoke even less if I ran 50:1, but I always err on the side of caution and go with a richer mix. Plus, I can always cut my mix with straight gas in a pinch, and still have plenty of oil in the mix. You'll love the old 10 hp once it's up and running again. If yours is a '60 model it should be a QD-21 model. My '61 was a QD-22. They're very peppy for their size, and can usually get a light weight 12'-14' boat on plane, and a 6 gallon tank will last all day and then some. Vroom-vroom!

 

[scuba_redneck]

Re: 1973 18 hp Evinrude starts out running great, but slips out of gear

My 10 is a 10020 model Evinrude. I believe the model designation that you gave was for the Johnson line of the same motor. Either way, it is still basically the same motor. I was able to run the 18 hard for a good solid 2-3 hours today fishing. I know it had two 45 minute WOT runs. I noticed that the fuel bulb seemed to go soft after running for about 5 minutes but the occasional pump rectified that issue. I began to have a carbon fouling problem towards the middle, however the engine had time to completely cool off and once it warmed up again, it ran great. A (very) little bit smoky at the foul out points, however with carbon fouled plugs I believe that is to be expected. One good WOT run cleared up the issue. Overall the 18 ran great with 2 men and 1 rather large kid on top of all the gear, coolers, etc that was in the boat. It planed out in about 10 seconds and cut the waves like a champ. I had approximately 8-12 inch whitecaps on the river (huge for where I am, child's play for others). Overall I am well pleased and with some tinkering on the idle mix I believe the fouling problem will be rectified.

 

[kfa4303]

Re: 1973 18 hp Evinrude starts out running great, but slips out of gear

sounds good. you can always run some Sea Foam through the motor if you think you're still having carbon build up issues. It smokes like @#$@, but works great. just do a search here in the forums for the "decarb" procedure. Champion J6C plugs are best too.

 

[scuba_redneck]

Re: 1973 18 hp Evinrude starts out running great, but slips out of gear

http://www.youtube.com/watch?v=ZI8rvho9NjE&feature=youtu.be

Here is the video link that I have been telling you guys that I would put up. She is a little shaky at takeoff, but she opens up to a gps speed of 21 mph.

 

[samo_ott]

Re: 1973 18 hp Evinrude starts out running great, but slips out of gear

Sounded nice...

 

[kfa4303]

Re: 1973 18 hp Evinrude starts out running great, but slips out of gear

......real nice Congrats on a job well done!!! Vroom-vroom!

 

[scuba_redneck]

Re: 1973 18 hp Evinrude starts out running great, but slips out of gear

The only concern I have is the takeoff hesitation/misses. It seems as if it does not want to change smoothly from the low speed to the high speed jets. Once it is fully on either it runs nicely. I did notice today while running it in the barrel after new fuel lines that there was fuel leaking from the seam on the crankcase between the half that the reeds attach to and the half where the pistons reside. I will tighten the bolts on it tomorrow when I get back to see if that helps any. I looked at some exploded diagrams and did not see any type of gasket material between the two halves. Soo…

1- does the transistion between high and low speed jets always run a rough middle?
2- is there supposed to be a sealant or gasket material between the two halves?

 

[AlTn]

Re: 1973 18 hp Evinrude starts out running great, but slips out of gear

yes..there's a sealant between the 2 halves..gelseal is the OMC one....the fact that it's leaking may well be contributing to your transition problems on take off

 

[geoffwga1]

Re: 1973 18 hp Evinrude starts out running great, but slips out of gear

With reference to your gears,if the clutch dog is not too bad when you turn it round,and you have a Dremel,you can grind the forward gear faces until you have nice sharp corners again,do it gently so as not to spoil the temper and it should work fine.I did it on my 40 Norseman and it has been fine since,though I don't expect it to last forever.
Cheers,Geoffwga1.

 

[scuba_redneck]

Re: 1973 18 hp Evinrude starts out running great, but slips out of gear

geoffwga1- I took the gears to a machine shop that I trust and had the head machinist put them in a mill with carbide bits and ease across the engagement surfaces to remove the rounded edges and return them to a good sharp 90 degree angle. So far they have not give me any trouble. I was out $40 to get the dog and the forward gear resurfaced. I feel that is a much bettter alternative to almost $500 for new ones.

AITn- Thanks a ton. I will be ordering a tube of it this week.

 

[scuba_redneck]

Re: 1973 18 hp Evinrude starts out running great, but slips out of gear

Alrighty now. I have been a bit busy here lately with finals prep and papers galore with college and finally am getting to see the light at the end f the tunnel. 2 more semesters and I'll be out with a BS in forestry.

Anywho, back to the outboard. I went today to o'reillys and bought a tube of permatex anaerobic gasket maker (px #51817). It is supposed to fill in gaps up to .050 inches. I am debating on whether or not I should replace the crankshaft seal just underneath the armature plate. The motor is 39 years old and I have a strong suspicion that ethanol fuel has been run through it judging from the condition of the old fuel hoses from the quick disconnect to the fuel pump and from the fuel pump to the carb. I have seen on other threads where this seal can be degraded from ethanol use. Does anyone have any recommendations regarding this seal or should I leave it as it? I have not seen the condition of it yet, however I was wondering if I should go ahead and replace it while I am in the crankcase.

 

[samo_ott]

Re: 1973 18 hp Evinrude starts out running great, but slips out of gear

I'd leave it unless you see something wrong with it.

 

[scuba_redneck]

Re: 1973 18 hp Evinrude starts out running great, but slips out of gear

Well fellers, I have the crankcase sealed up and she is purring like a cat at a very smooth idle. Last weekend I had it out and spun a hub. I was able to pick up a used direct replacement prop from a local shop for only $40. Thanks for all the help guys!

 

[kfa4303]

Re: 1973 18 hp Evinrude starts out running great, but slips out of gear

Awesome news Scuba! Glad you got here running. Happy Vroom-vrooming! Congrats on school too!