it's a older model a 78 or 79 i believe

The top is rased or lowered with a crank that is stored on the step riser
below the door.

There are two cranking locations on the front of the camper, one is at the
center and bottom of the front.  Associated with this is a small lever that
changes the ratchiting device to allow lowering the roof.

The second cranking location is toward the left ( As you face the front of
the camper) about 2/3 of the way from the bottom. This location is the one
you normally use.

I have found that when I lowere the top I first have to crank slightly in
the rase direction to allow me to release the ratchet.

The instruction manual states that the leveling jacks at the corners must be
retracted and the camper only on the wheels and hitch when puting the top up
or down.

I have a 78 Coleman I got new.  I can send you a copy of the owners manual
if you let me know you address.

Phil