Needle Drop Position - Janome MC8900 QCP Service Manual

Needle drop position

When the straight stitch is selected, the needle should be positioned in the center of the needle plate hole.
When the needle drop position is set at "0.0" and "9.0", the clearance between the side of the needle and the needle
hole should be 0.2 mm or more.
Fig. 1
Needle hole
"0.0"
0.2 mm or more
Hexagonal
socket screw
Needle threader
Mechanical adjustment
Needle drop position "4.5"
"9.0"
0.2 mm or more
A = B
Eccentric pin
Fig. 2
To adjust:
1. Attach the needle #14.
2. Turn the power switch ON. Select straight stitch.
Check that the needle drop position is centered
when the drop position is set at "4.5", and the
clearance between the side of the needle and the
needle hole is 0.2 mm or more when the needle
position is set at "0.0" and "9.0" (see fig. 1).
If this is not the case, adjust as follows;
3. Lower the needle threader until the hexagonal socket
screw shows up (see fig. 3).
Loosen the hexagonal socket screw. Turn the
eccentric pin to adjust the needle drop position.
The direction of eccentric pin should be as shown as
fig. 2.
4. Tighten the hexagonal socket screw.
Check the hook timing and the needle bar height after
this adjustment (see page 15 and 16).
Fig. 3
Needle threader
13
Hexagonal
socket screw
Eccentric pin