May 5, 2016 / Threads for 121-3 #1 K Kubotamann New member Joined Dec 7, 2005 Messages 18 Location San Juan Islands, Wa. and Sacramento, California Tractor Kubota 3710, KX121 excavator I own a 121-3 excavator. I want to install flat faced couplings to the flex lines going to the thumb. Can someone tell me what the threads are?
I own a 121-3 excavator. I want to install flat faced couplings to the flex lines going to the thumb. Can someone tell me what the threads are?