1962 johnson 28hp likes to buck

[dparker]

Re: 1962 johnson 28hp likes to buck

great thanks guys i will try that gonna put boat back in the water today and see if i can tune it up........i was unsure also but when i set the high idle mix do i have to do it in gear at full throttle cause if this is the way i have to do it i wont be able to do that cruiseing down the lake hahaha

also i seen in anouther post that was awnsered by td that a 69 johnson does not pee out the exaust is this the same as mine......cause now that i have changed the impeller i get alot of water out but in drops and mist also which i really beleive is a whole lot better than none at all.

also i guess my motor does not have a chargeing system on it when hooked up for an electric start.......i have to manually charge the battery at the end of the day but i am hopeing that i am maybe missing some wires to the battery

thanks guys
DREW

 

[wbeaton]

Re: 1962 johnson 28hp likes to buck

You have to set both jets while in gear. You may have to take a partner with you to help set the high speed jet while at WOT.

I'm not that familiar with your motor, but I don't think it has a tell tale (pee stream). I suspect it comes out the back of the motor with the exhaust.

Generators weren't an option until around 1962. You might be able to find one that fits, but again I'm not that familiar with your motor. Its a little new for me.

 

[dparker]

Re: 1962 johnson 28hp likes to buck

hahaha....ok wbeaton here is the new problem.......i took the boat out for a run and much to my surprise it was running great no clunking or nothing and it seemed to be doing what i wanted it to do.......so i opened it up to 3quarter throttle and it was doing good and all of a sudden it felt like it jumped out of gear.......motor tached out so i throttled down and when i did it was idleing away and i was checking out the gear lever to see what happened and it slipped into reverse and there she stayed.........so i back all the way back down the lake to the dock and brang the baot back to the house.....

i took the inspection plate off and theshift rod sliped out of whatever #10 on the blow up pic you sent me was so i put the rod back in place and the screw is stripped.......

now my question is can i take that part off of the upper shift rod and retap the lower screw so it will tighten around the lower rod so this wont happen again.....i just dont want to take it off the upper rod and find out it is holding a small washer or anything there seems to be alot of small parts on and above that part #10

 

[wbeaton]

Re: 1962 johnson 28hp likes to buck

You sure can, but only one size up and it might be pretty tight. After you retap the hole and are ready to put it back together, make sure the hollow at the top of the lower shift rod lines up with the new (oversized) screw you are inserting into the union (#10). That hollow needs to wrap around the screw. Also the screw only needs to be firmly tightened. Don't over do it or it'll strip again.

I'm sure you are aware of this, but I feel I should state anyway that you should use brass or stainless steel (whatever the union is made of) for the replacement screw. Don't use a standard metal screw.

At this point, I would ask myself why it let go. Did you notice if the threads were buggered when you put it back together? Did you have it connected properly?

But now that I think of it...the one time I retapped that part I used a metric screw because it was only slightly bigger as I recall. A whole size imperial might be too big. I'd give it a try, anyway. That part is still available for about $15-20 if retapping doesn't work.

 

[6228SH]

Re: 1962 johnson 28hp likes to buck

I have the same motor-cool! on mine I had the bottom end off a few times and probably by my own doing had messed up/stripped threads on both bolts in the shift rod connector-I was able to run a tap through the top one and got it tightened up( 1/4 28 tap it seems)-the bottom one I tapped out to the next size I had both a tap and bolt for-so far,it seems to be working fine.

 

[dparker]

Re: 1962 johnson 28hp likes to buck

right on i just hope i can get mine in top running condition......it seems like a nice motor and from the times that i have had it able to run it seems to have nice power.......

as for the rod connector i will tackle that later this week and let everyone know how it goes....

if you have any tips for this motor seens as you have the same one let me know......i am still trying to get the high and low mix right and any help would be great

 

[6228SH]

Re: 1962 johnson 28hp likes to buck

my best advice is to follow the link to joe reeves method for adjusting the carbs,and listen to what the more experienced guys say on here. a free thing to do is a link and synch.do you have a manual?

 

[dparker]

Re: 1962 johnson 28hp likes to buck

no i dont have a manual....i sure wish i did though....and for the link and sycro i have no idea what that is lol this is my first time with an old motor all my other motors have always been new so any info and ideas or help is very much appriceated.......

i have learned more in the last 3-4 days from this fourm than i have ever about motors i thank evryone for the help i have recieved since i joined the fourms

 

[6228SH]

Re: 1962 johnson 28hp likes to buck

1st-a disclaimer...I am far from an expert but I am familiar with what your working on.the link and sync is getting the throttle set to open at the correct point in relation to the ignition timing.on an old car(motorcycle-whatever) when you "give it gas" you are by cable or linkage opening the actual throttle in the carb(s),and the ignition advances by centrifical force moving weights-on your boat motor,in "giving it gas" you are turning the plate the points,coils etc. mount to and advancing the timing-this in turn opens the carb. you might try your library for a manual.