Massey Ferguson GC2310 Starter motor ring gear.

This is a niche DIY repair video for owners whose GC2310 starter has a worn-out ring gear, not a buying guide. The creator disassembles the starter, sources a cheap replacement ring gear from Japan instead of a $135 aluminum aftermarket part, compares tooth count and diameter against the original, and walks through reassembly steps including tricky groove alignment. Useful mainly for owners troubleshooting a noisy or slipping starter themselves.

Appears to be an owner-operator documenting their own hands-on tractor repair, part of an ongoing series about fixing issues on their GC2310.