SINGER CLASS 99 User Manual download pdf (Page 7)

Class 99 & 99K

If the Machine is Treadle Operated

Loosen the hand wheel by turning motion screw L, Fig. 16, over toward you,

place both feet upon the treadle and turn the hand wheel over toward you, at the

same time allowing the feet to move freely and lightly with the motion of the

treadle. Continue to do this until a regular and easy movement is acquired and

you are able to work the treadle so that you can re-start the machine with the

wheel turning toward you.

When familiar with the working movement, tighten the hand wheel by turning the

stop motions screw over from you, and place a piece of material under the

presser foot Q, Fig. 5. Lower the latter by means of the lifter and again work the

machine without being threaded, until you are accustomed to guiding the

material.

The belt should be only just tight enough not to slip. If too loose shorten and

rejoin.

Belt Shifter

This device simplifies throwing off and

replacing the belt. To throw off the belt,

move the belt shifter to the left (see Fig.

8), working the treadle at the same

time. To replace the belt, work the

treadle slowly with the hand wheel

turning toward you, when a revolutions

or tow of the wheel will bring the belt

back into its place.

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SINGER CLASS 99 User Manual Page 7