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I recently purchased an old New Holland 450 sickle bar mower to use with my TC29. The tractor carries the mower well and the mower works well on my ditch banks. It was in pretty poor condition when I paid $75.00 for it. A trip to my NH dealer and $125 in parts later. I have a great addition to the farm.
It still needs paint, but it works well and is much smoother than I expected. My neighbor came over and showed me how to change blades.
Its a snap with a 4" grinder and a ball peen hammer and punch.Remove the blade bar from the mower, Grind off the heads of the rivets on the blade side and punch them out. Put the new blade in place and put in the new rivets from the bar side, place the head of the rivet on whatever you are using for an anvil.We used a sledge hammer head for the anvil in the field. Then using the flat side of the ball peen, begin to drive the rivet like a nail. It will swell to fill the hole in the bar and tighten up. Then use the ball side to peen the rivet until it flattens. Check the blade to make sure it is tight and then repeat the process as needed. We pulled the blade bar and replaced 2 blades in about 10 minutes.

sickle bar for compact tractor
Operating and Attachments
Replies 12 Post by ArchyD