Making The Cutter Driving Shaft And Driving Shaft Presser Move Together - Brother RH-9820 Instruction Manual

9-15. Making the cutter driving shaft and driving shaft presser move together

The cutter driving shaft (2) and driving shaft presser (3) are linked by an extension spring (4) so that the hammer bracket (1) can
be positioned by being pushed down by hand when aligning the needle with an eyelet buttonhole that has already been made
in the material in order to resume sewing. If this extension spring (4) has been damaged, or if the return speed of the cutter is
too slow, the cutter driving shaft (2) and the driving shaft presser (3) can be made to move together as a single unit.
0502B
1. Turn the cock (5) in the direction of the arrow to close it and stop the supply of air.
2. Press the button (6) to release the air.
NOTE:
When the air is released, the hammer may lower by its own weight.
3. Remove the upper cover (7) and the face plate (8).
4. Lower the cylinder rod (9) to align the screw (A) of the cutter driving shaft (2) with (B) inside the face plate.
5. Use a commercially-available set screw (6) (M6 with a length of 6mm or less) to secure (A) and (B) together.
* Tighten the set screw (10) securely. If the set screw (10) is loose and protrudes from the surface of the cutter driving shaft
(2), damage may result.
6. Install the face plate (8) and the upper cover (7), and then open the cock (5) to resume the supply of air.
RH-9820
9. STANDARD ADJUSTMENTS
0473B
0503B
0472B
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