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FOR MANAGERS AND OPERATORS 501
idler gear 640, P. 4, remove the mechanism from the machine table, turn it bottom side up and looking in you will see the shaft which holds this gear, and on it, right up against the machine casting, a brass collar, the stock number of which is 642. Revolve the fly wheel until the set screw in this collar comes into view. Loosen the set screw and you may then pull the gear and its shaft out.
No. 26. Removing the Loop Setter. — Loop setter fork 768, P. 4, may be removed by first following Instructions Nos. 24 and 25. Then remove screw 767, P. 4, which will release the fork and clutch 766, P. 4. Loop setter cam 761, P. 4, is removed by following Instructions 24 and 25, loosening the two large screws in its face and pulling it off the shaft. Should it be necessary to remove the loop setter arm, carrying roller 769, P. 3, or the spring which provides tension therefor, first follow Instructions 24 and 25; then loosen screws 780 (three of them), P. 4. Having removed these screws, the entire arm, including roller 769, P. 3, may be pulled out through the hole in the machine casting. The replacement of these parts is merely a reversal of the process of their removal, but in replacing them, be sure that all screws, particularly screws 780 and the screws in cam 761, be set up tight. In replacing the loop setter, be careful that roller 769, P. 3, lines properly with, the lower sprocket, or, in other words, that the roller sets perfectly "square with the film," since otherwise when the loop setter acts the pull will be all on one side of the film, which may and probably will cause trouble.
No. 27. Adjusting the Loop Setter.— Screw 782, P. 4, is for the purpose of adjusting or regulating the throw of loop setter arm and roller 769, P. 3. This screw should be so adjusted that roller 769, P. 3, rests about half-way between the lower sprocket and the top of the front cross bar in the base of the machine.
No. 28. The Shutter Bracket. — When a new machine is received, shutter bracket 637, P. 4, will be folded down against the mechanism and shutter blade 700, P. 6, will be tied to the mechanism. Raise up shutter bracket 637, P. 4, until it is in a horizontal position, as shown in plate 4, and screw 732, P. 4, has engaged the hook on the upper part of the bracket, first having backed screw 732 out sufficiently so that the hook will pass in behind its head. Now, having raised the bracket clear up, tighten screw 732, P. 5, tight, and then 'tighten screw 733 tight.
Caution: Do not tighten screw 733 until you have tight