Insert the film cartridge in the left room, and push back in the rewind crank.
Insert the film tip in the socket of the take-up spool.
(Here, the film's upper and lower end has to be settled between the two guide rails at each upper and lower side.)
Then, make sure that the film's perforations are rightly engaged with the sprocket, and close the rear cover.
After that, make blind exposures till the frame counter is set to "1".