First,
welcome to OCC
Take that kirker/jerker lectronic bullshit thingy off and put it in the trash.
Clean the points that have been on there for 40 years and they will be good for another 40 years.
You can replace the condenser if it is suspected bad.
When bad they will idle, but not rev up.(they are inexpensive)
Down load the service manual from kohler,
available free here on OCC.
The timing marks are there I guarantee, just not easily seen.
Use a bright light and look when the piston is near TDC.
There will be 2 marks, one before TDC and one on TDC.
Search "static timing method" here on OCC and follow it,--it is simple and fool proof.
Then set the carb to factory settings initally.
Idle air first, then high speed mixture.
After that adjust to fine tune, error to richer on main jet not leaner.
As far as motor mounts:
Remove deck & mule drive.
Then remove engine as it is strongly suggested to modify the cradle that mounts engine to frame, after all these years they are usually beat pretty bad,
Chances are you are going to find stripped motor to cradle bolt holes in the aluminum oil pan.
That has to be addressed,either repair the threads/resurface or replace the pan with a cast iron one from various sources
Again,search "cradle mod" on here.
That should keep you busy for a while.
