Raise the front arm on the projector to the upright, locked position.
Place an empty take-up reel on the rear projector arm. The center hole in the reel matches with the sprockets on the spindle on the rear projector arm.
Remove the reel of film from its protective metal or plastic canister and push the hole in the center onto the feed arm above the projector in the front. The film must unspool clockwise.
Feed the edge of the film into the horizontal slot above the lens as you turn the control knob to the "On" position.
Push down on the spring-loaded film loop at the top of the projector as the film winds its way toward the top of the component. The film loop keeps tension on the film material as it passes through the projector. Once the film has traveled past the loop, remove your finger and the film loop pops up.
Grip the edge of the film as it emerges from the rear of the projector and switch the control knob to the "Off" position.
Thread the end of the film into the notch in the center of the takeup reel. Switch the control knob to "On" and watch the film wind onto the takeup reel for at least three revolutions. Switch off the projector until you are ready to screen the picture.