tommcgoo 0 #1 Posted May 11, 2016 Does anyone know if a model 7-1311 will fit a 1973 automatic 12? I have manuals that say a model 7-1312 will. What is the difference between the two? Does it have something to do with the crank shaft pto pulley size? Manuals say the 7-1312 will fit the automatic 12, so I'm assuming that means the original pto pulleyfor this tractor will work on the 7-1312. I see alot of post about smaller pulley sizes to run these sickle bars so the speed isn't too fast. And also can these sickle bars be run at a 45 degree angle to the ground? I have briers alond a dam and woods paths that need to be trimmed this way. Thanks in advance for any help on these matters. Share this post Link to post Share on other sites
Racinbob 11,038 #2 Posted May 11, 2016 (edited) Either will work fine. As far as speed, simply don't rev the motor up. Most PTO attachments are intended to run at full throttle but the sickle bar mower isn't. I used my sickle mower with the motor at about 1/4th throttle for many years. Won't hurt a thing and you're getting plenty of splashing going on. They will work fine at a 45 degree angle. I did exactly as you are wanting to do, trim briers from the paths in the woods. I simply put an eyelet in one of the existing holes in the steering tower and one about in the middle of the bar. A short piece of chain held it in place at the 45 degree angle. Just be careful. Edited May 11, 2016 by Racinbob 4 Share this post Link to post Share on other sites
