1976 35h.p, Evinrude lower unit rebuilt now not working

[flexon_guy]

I rebuilt the lower unit last fall for an older gentleman with the forums help (Thanks) I replased the clutch Dog Forward gear and it ran for last season. Replased gear lube in the fall and it ran well for a dozen times this year and now it is kicks in and out of gear again. IT seems as if you hold the Simplex shifter forward it kicks in and out of gear in a rtyhmatyic way about every 4 seconds depending on the speed. If you take off the simplex shifter it kick out of gear and stays out of gear. Does anyone know what is wrong with this rebuild? Could it be a bent prop shaft or something?<br /><br />Thnaks<br /><br />Mike

 

[DJ]

Re: 1976 35h.p, Evinrude lower unit rebuilt now not working

The clutch dog is worn out again.<br /><br />The guy you rebuilt it for probably made the mistake of "easing" it into gear thinking he was being careful.<br /><br />Shifts have to be quick and sure, otherwise the dog ears round off.

 

[flexon_guy]

Re: 1976 35h.p, Evinrude lower unit rebuilt now not working

Dj<br /><br />Thnaks for the quick reply. LAst year I discussed and showed him how to shift. Although I did not do the shifting He only used it last fall mybe two dozen times. THere seems to be something wrong here besides improper shifting technique. <br /><br />Mike

 

[DJ]

Re: 1976 35h.p, Evinrude lower unit rebuilt now not working

Mike,<br /><br />If it is popping in and out of gear, the clutch dog is NOT holding. Once they slip, they wear quickly.<br /><br />Make sure your remote shifter is allowing full engagement. If it doesn't, it took out the clutch dog.<br /><br />Regardless, it has to come back apart.

 

[flexon_guy]

Re: 1976 35h.p, Evinrude lower unit rebuilt now not working

DJ<br /><br />Do you suppose that the Remote prohibited full engagement worked for awhile and then allowed it to kick out wearing it. I do not want to rebuild it only to have it happen again. Which I am pretty sure it would if I do not locate the source of the problem.<br /><br />What do you know about the simplex remote? It seemed a s it locks into reverse alright. But when you put it in forward it seems to not go all the way forward and gets gradually stiffer as you try to push it forward but does not click or lock into place like the reverse seems to. Althouh if you check the motor is in forward. Is the remote supossed to "lock" it in gear?<br /><br />How do I test remote?<br /><br />Thnaks<br /><br />Mike<br /><br />Thnaks again<br /><br />Mike

 

[DJ]

Re: 1976 35h.p, Evinrude lower unit rebuilt now not working

I do think the remote MAY have had something to do with it.<br /><br />The cable needs to be able to put the motor shifter firmly into gear-all the way. If it doesn't, the dog will slip, under load.<br /><br />Usually, it is an adjustment of the cable adjustment barrel, at the motor end. Realize also that cables can bind and stretch over time. Remember, it is NOT the control that holds it into gear. The clutch dog does that. The control can certainly hold it slightly mis-engaged though.<br /><br />I still think you need to go into the lower unit. However, don't put it back in service unless you can assure yourself the control is allowing a full engagement.

 

[flexon_guy]

Re: 1976 35h.p, Evinrude lower unit rebuilt now not working

DJ<br /><br />With a new forward gear and clutch dog last year do you think the forward gear is still usable? The guy has continued to use the motor (opening fishing) kicking it in and out of gear 30+ times. I am thinking it needs a new forward gear as well. What do you think?<br /><br />Thnaks<br />mike

 

[DJ]

Re: 1976 35h.p, Evinrude lower unit rebuilt now not working

I don't recall if that is an assembly? If not, the dog is all you need. The gear really doesn't take any abuse while shifting. A thorough inspection is warranted though. Make sure there are no chips. Chips can cause some weird noises.

 

[DJ]

Re: 1976 35h.p, Evinrude lower unit rebuilt now not working

Mike,<br /><br />I just thought of something.<br /><br />Make sure the prop hub is not slipping.<br /><br />Make a mark on the inner prop hub and a corresponding mark on the prop outer hub.<br /><br />Run the boat until it acts up. Do the marks still line up?? If not, the prop hub slips. A new prop is the best remedy.

 

[flexon_guy]

Re: 1976 35h.p, Evinrude lower unit rebuilt now not working

I remember when I picked up the parts at t.c. outboard the guy down there said that these motors run at such high torque with just the two teeth on the dog that they tend to eat up these parts. I think I recall that they use three on the next larger size h.p. evin's. I remember now that last year I did not replace the forward gear (clutch dog only) and it still kicked out when I replaced the forward gear it worked for that short period of time. It may of kicked out only 1-3 times. Is that enough wear on the dog to make it fail?

 

[DJ]

Re: 1976 35h.p, Evinrude lower unit rebuilt now not working

Mike, look at my last post.

 

[flexon_guy]

Re: 1976 35h.p, Evinrude lower unit rebuilt now not working

Just saw it. I will try that.<br /><br />Thnaks<br /><br />Mike

 

[DJ]

Re: 1976 35h.p, Evinrude lower unit rebuilt now not working

Mike,<br /><br />In one of your posts, you said the guy shifts 30+ times in one outing. That is allot and allot of room to "slip it".<br /><br />I agree that those are torquey engines and I always thought the dog set up was somewhat marginal.

 

[flexon_guy]

Re: 1976 35h.p, Evinrude lower unit rebuilt now not working

Could just try a new prop if he has one to. Right?<br /><br />Mike

 

[DJ]

Re: 1976 35h.p, Evinrude lower unit rebuilt now not working

Sure can. The chances of two spun hubs are pretty slim.<br /><br />Let us know.

 

[flexon_guy]

Re: 1976 35h.p, Evinrude lower unit rebuilt now not working

he doesnt shift that many times it kick out that many times. Its wied to it seems to do it in a rythmatic way like every 4 seconds exactly. I didnt know if that ment anything or not. It would like "buck" or Hickup exactly every four seconts on the dot.

 

[DJ]

Re: 1976 35h.p, Evinrude lower unit rebuilt now not working

Mike,<br /><br />What you describe is a "sneeze". Sneezing indicates it is running lean.