Janome FOUR-DBL Service Manual page 18

TO ADJUST THE CLEARANCE BETWEEN THE NEEDLES
AND THE LOWER LOOPER/NEEDLE GUARDS (3 of 3)
1. Change the right needle from #11 to #14.
2. Push the right needle by the front needle guard to adjust the clearance between the needle and the
tip of the lower looper. The clearance should be 0 mm to 0.05 mm.
3. Attach #14 needle on the left needle position and turn the handwheel towards you to check the
clearance between the left needle and the tip of the lower looper.
Make sure the front needle guard is touching the needle slightly and the rear needle guard is not
touching the needle.
4. Check the timing between the needle and the lower looper.
5. Recheck the needle bar height and the clearance between the needle and the lower looper.
Needle #14
Front needle guard
(Rear needle guard is not touching the needle.)
0 to 0.05 mm
Lower looper
Rear needle guard
0 to 0.2 mm
16
Front needle guard
Hexagonal
socket
screws (A)
Rear needle guard