TIMING OF NEEDLE AND FEED DOG
When the tip of right needle is at 2 mm (J) above the needle plate in its downward motion, and
lowered presser foot, the top of the feed dog teeth (K) should be leveled with the top surface of
needle plate (L) at the end of feed movement (M).
To adjust:
1. Remove the machine base.
2. Loosen set screw (A) and remove setscrew (B). Remove feed base cover (N).
3. Loosen set screw (C) and remove balance weight (O). Loosen setscrew (D) and remove
knife cam (P). Loosen setscrew (E) and remove link pin (Q) and upper knife rod (R).
4. Set feed regulator dial at 3.0, differential dial at 1.0.
5. Raise the presser foot and move the tip of right needle to 2 mm (J) above the needle plate in
its downward motion by turning the balance wheel.
6. Lower the presser foot, and loose the two screws (F) and adjust the position of the feed cam
(S) while aiming the guide line (T).
* Turn the feed cam to the direction G if the feed dogs are lower than the surface of the
needle plate.
* Turn the feed cam to the direction H if the feed dogs are higher than the surface of the
needle plate.
7. Loosen the two screws (I). Turn the balance wheel to bring the 2.5mm hole (U) of sub feed
cam (V) in front position. Put the guide pin (W) through the sub feed to main feed cam.
Tighten the setscrews (I). Clearance between main feed cam and bushing should be 1 mm
(X).
8. Attach the link pin (Q) through the upper knife rod (R), and attach the balance weight (O) and
knife cam (P) to main shaft. Then set them in line with the guide line and tighten the set-
screws (C) and (D).
9. Attach the feed base cover and machine base.
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