When The Feed Dog Does Not Return To "Up" Position - Janome MC6300P Service Manual

Projection of
feed lifting
cam
Setscrew (B)
Coil spring
Coil spring
Setscrew (A)
Projection
Setscrew (A)
Range of turning
Setscrew (B)
the lower shaft
ring
Feed lifting
cam

When the feed dog does not return to "UP" position

Projection
Setscrew (A)
Feed lifting
cam
Projection
Setscrew (B)
1. Function of the drop feed lever
1) Remove the machine base.
2) Set the needle bar at the lowest position.
(The projection of the feed lifting cam is visible at this
position.)
3) When the drop feed lever is moved left and right, the
feed lifting cam should move accordingly.
2. The position of the setscrew on the lower shaft ring
Check if the setscrew on the lower shaft ring is in line
with the projection of the feed lifting cam. The setscrew
(B) should be at the position as shown.
3. The clearance between the feed lifting cam and coil
spring.
When the feed lifting cam is pushed to the left, the coil
spring should covered with the feed lifting cam
completely.
If the feed lifting cam does not move smoothly, make
adjustment as follows:
1. Loosen the 2 setscrews on the lower shaft ring.
2. Set the needle bar at the lowest position and turn
the lower shaft ring slightly to twist the coil spring
lightly. Set the setscrew (A) in line with the
projection on the feed lifting cam and tighten it.
3. Tighten the setscrew (B).
4. Check the above steps 1 through 3.
5. Make sure that there is no thrust play on the lower
shaft. Attach the machine base.
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