M500 1964 skidsteer replace drive belt.

[n9559t]

i/m new to this. I have a 1964 M 500 Skidsteer. the kohler motor was bolted to two pieces og inch and a half squre tubbing and welded to the frame. The welds broke and i'am in the process of correcting this. I'm trying to find out how to install the drive belt once i bolt in the motor?.I hope someone out there knows . Thanks