Changing the Starter on the 1969 John Deere 2520 Diesel

This is a hands-on starter swap on a 1969 John Deere 2520, filmed outdoors in cold weather. The owner pulls a worn gear-reduction starter he's run for a decade, points out a broken ground strap stud, and walks through the tricky bottom bolt using a wobble extension, then reinstalls and confirms it cranks. Useful specifically for 2520 owners facing a similar starter replacement, not a general overview.

Appears to be an owner-operator working on his own 2520, sharing practical DIY repair experience rather than professional or dealer credentials.