What are you afraid of? Nothing the Bravo Foxtrot Hotel can't handle... 😆 P.S. Yes your assumtion is correct; 2-1/4"
Look for a Proto 2-1/4" combination wrench on ebay or similar type.The Proto wrench is much more longer and the head is slim. 👍 The original Armstrong open end wrench's head is too big and is short as I found out one time when I threw a track in the woods just before I was to cross a small creek. It doesn't leave much room to turn maybe a 1/16th turn at a time and that's from turning it over on every turn. It took me about 2 hours to back the adjuster off to reinstall the track. Now this was on a D2 with a tool bar and I also had to remove one pin and swing the hyd. cyl. out of the way. :frusty: