Baby Tractor Looking for an Engine..

   / Baby Tractor Looking for an Engine.. #11  
That shroud is covering a belt drive the starter would most probably be a starter generator combo. A new electric start engine will have a built in dynamo generator and a Bendix to flywheel driven starter mounted on the side of the engine. it may or may not require a separate solid state voltage regulator some engines come with one mounted on the engine.
If it were me I would go with something in the 10 to 14 hp range gasoline or 8 to 11 hp diesel

I also had most recent thought about that to....... It would also be a clue to engine rotation, remove cover, remove belt, jump battery to starter/generator (?) and see which way it rotates....

Dale
 
   / Baby Tractor Looking for an Engine.. #12  
First thing, pull the head and see how bad it is.
 
   / Baby Tractor Looking for an Engine.. #13  
In looking at both of your pictures you posted, I believe that on the flywheel side (left side as you seat in the seat) you have an old style starter/generator unit attached to a pulley on the flywheel.
On a new/modern engine, this will be nonexistent! The starter will engage on the bottom of the flywheel and have a generator under the flywheel. You would likely need a voltage regular if using electric start.
These are educated guess as it is all difficult to see behind the shroud.
If you decide to go with a pull cord start motor, it is much simpler to upgrade the motor.
On the shaft side of the motor (right side as you sit on the seat) I believe your rotation will match the rotation of a modern engine. You issue here will be either matching shaft size to fit existing pulley or a new pulley to match existing pulley size for a new motor with a different size shaft. Either approach should be doable.
To check my guessing, remove the shroud, remove the belt and jump power to the starter generator, watching for rotation of the pulley on the started. Then go to a pull rope motor and check its rotation direction. I believe you will find they match and a getting running fir whatever usage is as simple as finding the size motor you wish to install.
 
   / Baby Tractor Looking for an Engine.. #14  
I also had most recent thought about that to....... It would also be a clue to engine rotation, remove cover, remove belt, jump battery to starter/generator (?) and see which way it rotates....

Dale

As far as I can remember all small engines I have ever seen always had the same rotation but that is not to say that some couldn't have had the opposite just don't think I've ever seen one that did
 
   / Baby Tractor Looking for an Engine.. #15  
As far as I can remember all small engines I have ever seen always had the same rotation but that is not to say that some couldn't have had the opposite just don't think I've ever seen one that did

Believe you are correct.
Only last couple of years I have seen (forget brand) snow blowers that had rotated opposite way.
 
   / Baby Tractor Looking for an Engine.. #16  
As far as I can remember all small engines I have ever seen always had the same rotation but that is not to say that some couldn't have had the opposite just don't think I've ever seen one that did

If you did, bet it was a Sear's engine. Seen/had Sears products with non-standard parts.
 
   / Baby Tractor Looking for an Engine.. #17  
Here is A Sears Suburban tractor which is probably near the same age as yours with a Kohler engine
here is a picture of a Kohler engine with the belt guard similar to yours
Sears may have done a lot of things but their engines were made by an engine manufacture
Even the sears outboard engines were made by Johnston or Elgin they just had their brand on them
20170710_101914.jpgc.jpg

20170710_181020.jpgc.jpg

s-l1000.jpg
 
   / Baby Tractor Looking for an Engine..
  • Thread Starter
#18  
Here is A Sears Suburban tractor which is probably near the same age as yours with a Kohler engine
here is a picture of a Kohler engine with the belt guard similar to yours

Close but not quite there.. we were able to get the model number off of it today.. it's a Sears Super 12

also, verified that the drive to the tranny runs anticlockwise when the tractor is moving forward so that's good, but it looks like the tranny is shot I can only find reverse and one forward gear. Starting to look like a money pit. pity
 
   / Baby Tractor Looking for an Engine.. #19  
Close but not quite there.. we were able to get the model number off of it today.. it's a Sears Super 12

also, verified that the drive to the tranny runs anticlockwise when the tractor is moving forward so that's good, but it looks like the tranny is shot I can only find reverse and one forward gear. Starting to look like a money pit. pity

These things usually are , that is why they get abandoned.....

Dale
 
   / Baby Tractor Looking for an Engine.. #20  
Close but not quite there.. we were able to get the model number off of it today.. it's a Sears Super 12

also, verified that the drive to the tranny runs anticlockwise when the tractor is moving forward so that's good, but it looks like the tranny is shot I can only find reverse and one forward gear. Starting to look like a money pit. pity
if you do machine design, it will be easy to fix the transmission!.. it's a manual transmission, so it's either the shifter fork or stripped gears, which can be made on a milling machine..
 

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