Johnson 6HP fule

[orrenk]

It really looks like there's lots of good information out there on this. I have a 1967 (I think) 6HP Johnson that came with a 12' boat. Model number is CD24S and serial number is J2817401. Does the S stand for short shaft? I have seen various mixtures posted from 24:1 to 50:1. Some of the posts say that after 63 or so everything is 50:1. I haven't even tried to start the engine because I don't have a fuel line connection to the gas tank. I have in inlet connector but I don't have the connector assembly to the tank itself. The fuel tank has directions that say 1 pint of Johnson oil to 6 gallons. Any thoughts on where I can come up with a connector assembly for this. Also, I have no idea on how long it's been since this ran. It has compression and spins freely. Any thoughts on what all I need to do to use this motor? Thanks for all your help

orren

 

[Rick.]

Re: Johnson 6HP fule

http://forums.iboats.com/showthread.php?t=158086

Have a look at this link for things to consider. The connector can be purchased at any boat parts dealer. Take a good look in the gas tank and make sure it is clean before adding a gas mix. Sorry I am not sure what gas mix your engine calls for. Rick.

 

[wbeaton]

Re: Johnson 6HP fule

Officially the mix is 50:1. However, some say 24:1 is a better mix for that engine. I use 50:1 in my 1972 6 hp.

 

[lindy46]

Re: Johnson 6HP fule

CD-24 is a 1967. Check for spark, you should get a good spark on both cylinders. If you don't it might need new coils. Check the plugs and gap to 030". Drain the lower unit oil and check for water intrusion - milky oil indicates water is getting in. It would then need seals replaced. Refill the lower unit with gear oil. Then put her on the boat and try starting her. If she runs, you may need to adjust the carb to get it running smoothly. Check that the water pump is working - if not, it will need a new impeller. Good luck - hope she fires right up

 

[orrenk]

Re: Johnson 6HP fuel

Re: Johnson 6HP fuel

Thanks guys for all of the information and the speedy replies. What does the "S" stand for? Looks like I've got some work to do. 1st thing is to find a connector assembly for the gas tank so I can get some fuel up there. Oh yeah, i need to put grease in the lower unit too. I haven't checked for spark but I really was impressed with how clean the engine is under the cowl. It's a fiberglass cowl. Thanks for all of the help
orren

 

[Mas]

Re: Johnson 6HP fule

Pump up the LU with LU gear oil... not grease. You can take the prop off and grease the shaft with marine grease, however. You may want to also get some 2-stroke oil or fogging oil in the cylinders before trying to start. The cylinders are dry due to sitting...they need oil!

MAS

 

[Whoopbass]

Re: Johnson 6HP fule

You can get the fuel connector,lines,tank,etc at Wal mart.

 

[budgey]

Re: Johnson 6HP flue

Re: Johnson 6HP flue

I asked a similar question just a few hours before you did ! For more, info see my thread entitled "Johnson 6 HP - 1967 bearing type"

My engines is model CDL 24D. I am informed that the "L" stands for longshaft, which it is. Makes sense than that an "S" stands for short shaft.

Good luck

 

[Froggerman]

Re: Johnson 6HP fule

I have the same motor and just had the lower unit rebuilt.
Had new carburator kit put in it, Heres my problem.
When in the barrel of water it fires up great and throws the water out.
When put on the boat and under strain, the Forward gear or lever keeps popping out of gear. Also when i put some throttle too it too go faster it bogs down and wants too shut down. I have too keep pumping the choke in and out too get it too stay running.
Any help would be appreciated.



Wally
(Frogger)

 

[bktheking]

Re: Johnson 6HP fule

I have the same motor and just had the lower unit rebuilt.
Had new carburator kit put in it, Heres my problem.
When in the barrel of water it fires up great and throws the water out.
When put on the boat and under strain, the Forward gear or lever keeps popping out of gear. Also when i put some throttle too it too go faster it bogs down and wants too shut down. I have too keep pumping the choke in and out too get it too stay running.
Any help would be appreciated.

Wally
(Frogger)

You should start a new thread instead of tagging onto one from March.

Popping out of gear usually indicates a worn clutch dog in the lower unit. As far as the carb is concerned was it cleaned properly before the kit was put in it? Also sounds like the float may be out of adjustment.

 

[Froggerman]

Re: Johnson 6HP fule

Sorry for posting on an old post. I didnt look at date of post but googled the info and came up with that post.
Again sorry and Thanks for the quick reply, im gonna look into the things youve told me about.


Thanks and Sorry
Wally

 

[Tim Frank]

Re: Johnson 6HP fule

Given that you state that the LU was just rebuilt, unless the shop is incompetent and the LU is not reassembled properly or they did not replace a worn part that they should have, hope for a linkage that needs adjusting.

 

[bktheking]

Re: Johnson 6HP fule

Missed the lower rebuilt, rebuilt as in they replaced gears and clutch dog or just replaced the seals? Could be shift rod adjustment or they rebuilt it wrong.

 

[Froggerman]

Re: Johnson 6HP fule

the whole shaft going down was rusted and twisted in half(Broke)
The Shaft or whole inside was bought and rebuilt too include the impellars i think thats what you call it.
Im going too call the person that rebuilt it for me and tell him the things youve told me and then i can get a feel for exactly what he put in it besides the shaft.

Also ive gone too boats.net for parts and it seems that they only go asfar as 1968.

Im looking a pinion gear, was shocked too see that it is plastic and some of my teeth are warn.
Would that gear for my 1967 motor be the same as the 1968 one.
I found the part for about 14 bucks.

 

[1946Zephyr]

Re: Johnson 6HP fule

plastic pinion gear??

1967 and 1968 should easily be interchangeable

 

[ezeke]

Re: Johnson 6HP fule

Plastic on the starter, not the gearcase.

 

[1946Zephyr]

Re: Johnson 6HP fule

Oh okay. You said pinion gear and I thought you meant in the gear case. Oddly enough though, the gear on your hand starter is also call the pinion gear and other starter types, it's called a drive gear.

Anyhow, welcome to iBoats. There are a lot of good helpful guys here. F_R is probably the most knowledgeable member here but there are several other too. I've got years of experience with these things (eventhough this is the first time I've seen two parts on the same motor with the same name LOL)
The moderators are very helpful too. Anyhow, I hope your Christmas was good and you have a great New Year.

 

[Froggerman]

Re: Johnson 6HP fule

ok took motor back and he just cleaned and replaced the Shaft inside lower unit.
He said he didnt see anything wrong with clutch dog, but is breaking it down once again too check linkage and clutch dog.
Also checking the shift arm too see if it is lose.
He insures he is going too get it right.
Thanks you all so much for the info and kind help and words.
I plan on learning my motors so I can upkeep my motors properly.

Again thanks

Wally

 

[bktheking]

Re: Johnson 6HP fule

At least he is looking after his work, I wouldn't figure it would be doing that if the gears and dog were replaced but since they weren't he may have missed something or something in the shift control is set up wrong.

Let us know what it is.

Cheers

 

[Froggerman]

Re: Johnson 6HP fule

Ive just got an Email from my friend that works on the motor.
I havent gotten it back yet but this is what he has found.
I have your motor back together. I did a replacement of the lower gears from one of my parts motors. Looks like the lower bell crank and clutch dog were worn a little more than first suspected. All the rust and corrosion from them being froze up looked a lot lot worse when I compared them to the good used ones. Also put in another new seal as seals can't be saved when changing bottom end stuff. I checked the carb again, all fine and clean but noticed that the suspect gas hose that was soft was actually full of small cracks and holes. Replaced it. Top bell crank is a little loose but don't think it is enough to cause it to pop out of gear, It may have been all in the bad lower parts. I also switched out the starter gear with a good used one from the parts motor. I had intended to start it today but water tank is froze up. Not good weather to work on motors.
My Friend is a great guy and has stated that he is learning more as he works on them.
Hopefully this does the trick and the motor will run good for us.
Thanks all for your chats and talks on this subject.
When I went back too him with it I had more insight and learned alot and knew what too ask and have him look at. So again thanks your chats are learning things for me aswell.


Wally