Re: 1974 Eska 1925B 9.5HP Manual/Parts

[retiredoz]

IMHO, you might have picked an easier example to apply your mechanical skills. This motor has a solid-state ignition with a semi-sophisticated automotive-style spark advance with the ignition module that didn’t come with a guarantee of longevity. That part may be out of print, or hideously expensive if available. Tecumseh built that engine ’73-’85, and as far as I know, never used that setup on any of their other products.
Special tools are required for timing if most anything under the flywheel is replaced, or if the stator is removed without marking it’s position.
I would expect that most replacement parts would require finding a cadaver, although impellers (these are water-cooled) may still be around.
I wish you good fortune.