Adjustment
[Adjustment standard]
The clearance between the needle plate A and bottom surface of the presser foot is 7.0 to 7.5mm.
Presser foot parallel with feed dog hole.
[Adjustment procedure]
1. Remove the face plate assy..
2. Attach the J presser foot.
3. Start the test mode.
4. Raise the lift lever.
5. Turn the pulley by hand and down the feed dog lower than needle plate A.
6. Loose the socket set screw (CP, M5x10) of the needle presser bar block.
7. Adjust the needle presser bar height, clearance between the needle plate A and the bottom surface of the presser
foot is 7.0 to 7.5mm.
8. Tighten the socket set screw (CP, M5x10) of the needle presser bar block (tightening torque: 1.37 to 1.77N· m).
*Key point
Check presser foot parallel with feed dog hole after adjusting presser bar height.
•
Bottom surface
of the presser foot
Presser bar height and parallelism
Socket set screw (CP, M5x10)
Upper surface of
the needle plate A
7.0 - 7.5mm
42
4 - 19