To set the needle bar, To set a needle bar which has no mark, To time the sewing hook – SINGER W203 User Manual

Page 10

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To Set the Needle Bar

See that the needles are up In the holder as far as they will go.

There are two lines across the needle bar about two inches above the

Icwer end. When the needle bar is at Its lowest position, the upper

mark should be Just visible at the end of the needle bar frame.

In case the needle bar Is not correctly set, loosen the needle bar

connecting stud pinch screws (G, Flg,4) and place the needle bar in
correct position as directed above, then retlghten the screws (G).

To Set a Needle Bar Which Has No Mark

Adjust the feed eccentric (B, Fig.17) so that there Is no feed

movement of the needle bar frame, then set the needle bar so that when

It rises 1/8 Inch from Its lowest position, the points of the sewing

hooks will be about l/ie Inch above the eyes of the needles.

To Change the Amount of Lift of

the Alternating Pressers

The height of lift of the pressers Is adjustable by moving the

link (F, Flg.4) to any of the four holes In the rock shaft crank. The

majclmum lift Is secured with the link In the bottom hole. The amount

of lift should be regulated according to the thickness of the material
being sewn. The feet should lift Just high enough to clear the


To Adjust the Relative Height of Lift

of the Vibrating and Lifting Pressers

As a rule, the vibrating and lifting pressers should lift an equal

height, but some grades of work may require that they lift an unequal

height. To change the relative lift of the presser feet, loosen the

screw (E,Flg.3) at the back of the machine and move the vibrating
presser bar upward or downward as required, then securely tighten
the screw (E).

Relative Positions of Vibrating Presser Bar

and Lifting Presser Bar

The distance between the vibrating presser bar and lifting presser

bar, after adjusting the feed eccentric (B, Fig. 17) so that there is no

feed movement of the needle bar, should be 5/8 Inch as shown In Fig. 4.

If the distance between the vibrating presser bar and the lifting

presser bar Is more or less, Insert a screwdriver In the hole at

(C,Flg.3) at the rear of the machine and loosen the clamp screw which

holds the needle bar rock frame rock shaft. While this screw Is loose,

the needle bar frame can be moved forward or backward to the required

distance. A piece of metal of the correct width may be used to deter­

mine the correct distance. When making this adjustment be sure to see

that the feed eccentric (B,Fig. 17) Is set so that there Is no feeding

movement of the needle bar. When the adjustment has been made, securely

tighten the clamp screw at C.

To Time the Sewing Hook


,' i.'

Adjust the feed eccentric (B,Fig. 17) so that there Is no feeding


Remove the throat plate and turn the balance wheel over toward

you until the lower mark across the needle bar Is Just visible at the
end of the needle bar frame on the upward stroke of the needle bar.

If the needle bar and sewing hooks are correctly timed, the points of
the hooks will be at the centers of the needles and about 1/16 Inch

above the eyes.

In case the sewing hooks are not correctly timed, turn the balance

wheel over toward you until the needle bar has descended to Its lowest

point and has risen until the Icwer timing mark across the needle bar

Is Just visible at the end of the needle bar frame.

Loosen the two screws In the hub of each hook driving gear (T, Fig.

19) and tap this gear to the right or left on the hook driving shaft

until the point of the hook Is at the center of the needle. Tapping to

the right gives an earlier hook timing, and to the left a later hook
timing. Securely tighten the two set screws In each gear (T).

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