Dave's 1650 Project

[slim51015]

(b) Swapped in the new points, re-did the static timing. Tried to start, same problem.
c) Just a note for reminder, in case it strikes anyone as problematic: When I initially put the points @ .020, they break at TDC, when the "T" is in the sight hole. I have to bring them all the way out to around .040 to get them to break at the "S.")
---------------------------------

I rebuilt a 1650 .... when i set the points like above i had hard start
I turned the motor till points were wide open ,set gap to .020 , I didnt look at the timing marks on the flywheel .... it started right up.
Its worth a try

[Methos]

Originally Posted by CC1650Dave

So just to recap, this is the detail I went through to try and find the problem. After all of this, it seemed that the crankshaft had to be off by one tooth.






Where, oh where to go from here.......

Dave without rereading everything did you change the push pin? You've went thru this pretty good so I'm sure you have but I wanted to make sure. Have you tried a timing light yet?

[CC1650Dave]

Duke, I don't think I replaced that pin. I guess that could be a factor, although this engine wasn't all that worn. I'll get one on order.

Now that I've got the motor back out, I'd really like to be able to determine that my problem is NOT internal-engine related before I put it back in. Something like those moving parts on the camshaft or something. I wish I could bench-start the engine and work on it there. I'd imagine the K341 needs to be bolted down to something pretty heavy.

It'd really suck to put it back in the tractor and find I have to take it back out again...

[CC1650Dave]

Originally Posted by slim51015

(b) Swapped in the new points, re-did the static timing. Tried to start, same problem.
c) Just a note for reminder, in case it strikes anyone as problematic: When I initially put the points @ .020, they break at TDC, when the "T" is in the sight hole. I have to bring them all the way out to around .040 to get them to break at the "S.")
---------------------------------

I rebuilt a 1650 .... when i set the points like above i had hard start
I turned the motor till points were wide open ,set gap to .020 , I didnt look at the timing marks on the flywheel .... it started right up.
Its worth a try

So that would be the standard timing procedure, right? And in your case (like mine) the gap was really wide to get it to hit at "S"?

[CC1650Dave]

On that point, has anyone here ever bench-started one of these big old Kohlers? If so, what's involved?

[slim51015]

Originally Posted by CC1650Dave

So that would be the standard timing procedure, right? And in your case (like mine) the gap was really wide to get it to hit at "S"?

yep, the standard timing worked better on mine..... when i set using static timing it would barely start and back fired through the carb.

[Methos]

Originally Posted by slim51015

yep, the standard timing worked better on mine..... when i set using static timing it would barely start and back fired through the carb.

I like setting my timing using the static timing method due to the fact that setting the points at .020 doesn't work for every enigne. Using the static timing or timing light I get get it set correctly for that engine. Using a timing light for me is the fastest way to do it but I've used Matt's guide and was able to get it set dead on with no guessing if I would have to adjust it or not. With Dave's on going problem I think a timing light would tell him for sure it was set and take out any doubts if it was correctly set.

[CC1650Dave]

I agree Duke. If I'm going to stuff that engine back in with any doubt as to whether I've solved the problem or not, the timing light will definitely be part of the equation.

[CC1650Dave]

Does anyone have any pointers on the camshaft itself? I don't have that two-piece unit that I've seen in the manuals.

But I remember during assembly, one of those little springs came off its mounting position. I put it back in place, and it all looked OK, but I wonder about that thing. I don't know how it works, and nothing in the manuals gave me any insight into its mystery.

I just want to make sure that I've covered all the internal engine variables before I put it back together and mount it up.

[Methos]

Originally Posted by CC1650Dave

I agree Duke. If I'm going to stuff that engine back in with any doubt as to whether I've solved the problem or not, the timing light will definitely be part of the equation.

Good to hear Dave. I want this to work out for you this time.

Originally Posted by CC1650Dave

Does anyone have any pointers on the camshaft itself? I don't have that two-piece unit that I've seen in the manuals.

But I remember during assembly, one of those little springs came off its mounting position. I put it back in place, and it all looked OK, but I wonder about that thing. I don't know how it works, and nothing in the manuals gave me any insight into its mystery.

I just want to make sure that I've covered all the internal engine variables before I put it back together and mount it up.

Hmmm