jonsstihl
Veteran Member
I recently got my hands on a mott 72 flail mower for a great deal (free) but the cutter shaft is seized. I though I just needed cutter shaft bearings but it seems to have other issues. I looked online and am going to contact montage for any info about a parts catalog. this appears to be an older model with the small round roller but there doesn't seem to be any set screws on the the inside of the cutter shaft bearings and there are no set screws on the outside.
I got the cutter shaft to turn by loosening the bolt holding the drive pulley on the cutter shaft. I was hoping to let it turn at idle for a bit to loosen up the bearings but when I looked a little closer at the pulleys they appear to be out of alignment and at some point in its life (before I got it) the cutter shaft pulley was too far in and rubbing on the bolt holding the roller bracket. Now the cutter shaft pulley is too far out, and when I torque the bolt holding it on it seizes back up on me.






If anyone has any info on how to get the cutter shaft off I would appreciate it and I would really like to have some kind of parts catalog to determine if the pulleys are original and what the spacing should be.
I got the cutter shaft to turn by loosening the bolt holding the drive pulley on the cutter shaft. I was hoping to let it turn at idle for a bit to loosen up the bearings but when I looked a little closer at the pulleys they appear to be out of alignment and at some point in its life (before I got it) the cutter shaft pulley was too far in and rubbing on the bolt holding the roller bracket. Now the cutter shaft pulley is too far out, and when I torque the bolt holding it on it seizes back up on me.






If anyone has any info on how to get the cutter shaft off I would appreciate it and I would really like to have some kind of parts catalog to determine if the pulleys are original and what the spacing should be.
Last edited: