How to mend Bell & Howell Filmsound 8

How can I fix movie projector Bell & Howell model #456A ?

B&H 471 loading?

compatible projector?

bulb removal?

How do I I replace the worm wheel on my Bell & Howell 644 16mm projector??

Take up reel not turning?

Old Bell & Howell 8mm projector service center?

Bell & Howell Model 456 Movie Projector?

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Bell & Howell Filmsound 8 Model 458?

Bell & Howell projector?

b bell & howell super 8 won't advance film?

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How do you replace the belt on a Bell & Howell #1421 Super 8 Projector?

bottom reel runs to fast?

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Obtaing Repair Manuals?

Bell and Howell model 256 projector lenses?

how do I fix a bell and howell sunlight lamp? ?

replacing a Bell-Howell 1615 Projector belt?

bell and howell filmosound 8 model 458A?

need lamp for Bell & Howell model 456Z?

repairing bell and howell 642?

How can I fix my Bell&Howell 8mm multi motion projector?

replacing a belt on a bell howell lx30 projector?

Repairing take-up reel drive shaft rubber wheel/tip - Bell & Howell MX43 ?