The manual does tell you how. Remove rivets shown in manual or otherwise "stretch open" the frame and install. Hopefully you have the new channel and rubber kit. The non-moving window is held in by rivets/brackets and the slider is captured in the frame. It's not too hard. 1-10 it's a 7. KY may be beneficial during some parts of the install. It is water soluable but soap leaves a sticky film sometimes and is very hard to get rid of completely. I actually made a "stretcher" using a turnbuckle. The eye ends of the turnbuckle fit into the u-shape frame. You can attach two turnbuckles to two pieces of wood and make a neat stretcher also for various situations around the shop. Those woodworker's wooden clamps can also work as spreaders. OK I'm done.


Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn