Operate a Super 8 film projector by loading the full film reel onto the projector's front reel mount, threading the film through the projector's internal components and placing the end of the film into the slot on the empty rear reel. Once the projector is threaded properly with a small amount of slack in the film, point the projector towards a wall or sheet, and turn on both the projection bulb and motor drive.
Threading is the process where you make sure the sprocket holes on your Super 8 film fit into the proper sprocket cogs on your projector. Most Super 8 projectors have automatic threading, so this tedious step is usually unnecessary. If you need to manually thread the projector, wear soft cotton gloves, and gently insert the sprocket cogs into the film's sprocket holes. Make sure the film is properly threaded before turning on the motor drive, as improperly threaded film can stretch, warp or tear.
Before turning on your projector, make sure it does not contain a large amount of internal dust. Because many Super 8 projectors are decades old, they often accumulate dust and other particulate debris. If the projector does have considerable dust inside, remove the dust using canned air. Do not try to use your hands or a manual duster, as these can damage the projector's delicate internal parts. Also, do not run the projector without removing the dust, as this can damage the internal components and even lead to fires.