On Sun, 26 Nov 2017 22:55:40 -0600, Steve Kraus
wrote:


So someone said to check the flywheel key:

This is what I see. Is that off? And if it is is it enough to prevent
operation?

http://home.earthlink.net/~filmteknik70mm/flywheel.jpg

I can get a new magento assembly for about $12-13. Is weak spark
sufficiently likely to make that worth a try? My other mower also has a
Tecumseh engine. If they are the same or similar it might be a simple swap
to see if that's the issue.

There all kinds of shear keys.

Regarding the spark, rust on the flywheel magnet and/or magneto
contacts will reduce or prevent strong voltage.

See:

https://www.youtube.com/watch?v=ry-oBVC-Tt4