Thanks for the feedback. I'll get the details from the motor tonight.
Hopefully the picture below helps regarding the drive sprocket.
In the meantime, I have the reel getting sharpened and straightened today along with a new bottom blade and bearings. One of the reel bearings was very rough.

What's the best way to tell if the chains need replacement or are salvageable?

Attachments
20200314_163729 L.jpg (447.39 KB, 177 downloads)