Ok, the first pic is of the lifting support that attaches to the back of the tractor, runs over the hydraulic deck lift and attaches to the bottom of the snowblower. As you can see it is also where the support springs attach. The rear clips onto the frame, you can see the clip that releases when time to take it off.
In this pic you can see the bottom of the snowblower and where the lifting support ties to it. The left side still has the sheet metal that covers the drive attachment. On either side of centre is a mounting point for the next few pics.
Here is a close up of the lift support attachment, and the upper attachments.
These pics show the unit that attaches to the front of the tractor. This is a combination piece that supports the snowblower, aides in the lifting and attaches by v belt to the PTO.
The large vertical rods, where they go through the front mounting plate go into the tractor front, the bottom left and right are where it clips onto the pins that are normally either side front, some models only have holes and would need bolts to act as the clips.
Either side upper are the two offset flat bars with tubes welded on, these go into the attachments mentioned earlier either side of centre.
The large vertical rods are bent at the top to hook the support springs onto that are attached to the lift support.
The centre pulley is the drive pulley along with the tensioner that attaches to the tractor front PTO. It drives the gear box and the drive shaft to the left of it. The drive shaft attaches to the small drive pin coming out of the snowblower main drive left of the pic. The cover plate has been removed for clarity.
These pics show the parts loosely laid out in their approximate locations and you can almost picture how it goes together. Hope this helps.