1973 Johnson 6hp throttle

[Michael leblanc]

Hey just wondering on my tiller handle where it says start I have to go like a half inch pass that to start and when it idles I try and turn it slowly back towards start and it kills before it gets there is that how it's going to be or do they have something I can set to make it set right ,any help

 

[barrynfla]

Re: 1973 Johnson 6hp throttle

Michael.......I just had that problem on my Johnson 25 hp. Pull the cowl off and look at the roller on the carb. It should be between the two marks on the throttle cam, NOT the two marks on the armature at the start position. If the roller doesn't reach those marks you're basically trying to start and run it with the butterfly closed. I assume once it's started that you're slowly pushing the choke lever back in to the off position.

Having said all that, I took my boat to my marine mechanic and he adjusted it. LOL I have no idea how but I'm sure someone will come along who does know how.

Hope this helps somewhat.

Barry

 

[Michael leblanc]

Re: 1973 Johnson 6hp throttle

Thanks Barry ima look into it I never really looked to see if I can figure it out on my own I just asked here first then I'll go look but really haven't had the time to check it out been raining alot

 

[barrynfla]

Re: 1973 Johnson 6hp throttle

Hey Michael......did you get your problem resolved. Don't know if you saw this recent post but here's how to adjust the throttle cam:

"I am not personally familiar with the 1991 model but for link and sync with the carb on the motors I am familiar with, the motor's throttle cam will have a mark. The carb roller should just touch this cam at the exact point of that mark. If it doesn't, hard starting will be your biggest problem and reduced performance from improperly set spark advance timing, will be the next.

On my motors there are two 5/16" hex nuts on the starboard side of that cam. If you loosen those nuts the cam can be adjusted back and forth to set this properly.

The other hard starter issue is the choke. You will want to determine that it did get fixed properly. The first and easier check is to look at it. When you pull the choke lever does it look like the butterfly closes. It should."

Wish I would have known this before I took my boat to my mechanic. Could have saved a few bucks! lol

 

[Michael leblanc]

Re: 1973 Johnson 6hp throttle

Hey no I'm sorry still never got a chance to look at it I been getting off late from work and i think y'all miss under stood it starts up fine just have to turn throttle pass the start symbol cause my throttle is off and that's what I'm trying to find out if there's something I can do to set it right to where when the trottle is on start the plate on the inside will be touching enough to start... Thanks yall

 

[Michael leblanc]

Re: 1973 Johnson 6hp throttle

Update y'all I got a chance to look at it and the cam throttle control plate is worn out where the the piece from the carb rubs on it so when the trottle turns to where start is its not pushing the thing on the carb to give it fuel

 

[barrynfla]

Re: 1973 Johnson 6hp throttle

Looks like you need part #34

Evinrude Magneto Parts for 1973 6hp 6302S Outboard Motor

 

[Michael leblanc]

Re: 1973 Johnson 6hp throttle

Yeah but I weld and braze so ima braze it and build it back up a little bit and buff it back to where it was ....thanks for yall help

 

[Rick.]

Re: 1973 Johnson 6hp throttle

I've go a 68 and had the same problem with that part. Not knowing what to do I elongated the screw hole with my dremel which allows the cam to come out further. Not sure if that was a proper fix and really haven't put any time on the motor so I'm not convinced I did good but it did seem to work the night I did it. Funny thing but I was not convinced the cam was all that worn down but it was the only thing I could think of to bring it out to the cam follower. Hows that for a confession. Best of luck. Rick.

 

[Michael leblanc]

Re: 1973 Johnson 6hp throttle

Yeah that sounds like it would work but I got to work today and it was aluminum so I passed a little bead right along the cam and built up on it and buffed it down to size but I just got home from work and it's 730 at night so I'll try it tomorrow and see how good it works