Check Spring Stroke; Pre-Tension Dial - Janome 1600P-QC Service Manual

q
B
r
e
w
q
11–15 mm
w
r
4 mm
A
t
q
10

11. Check Spring Stroke

The amount of the needle thread supplied by the check
spring should be 11–15 mm.
z
Thread the machine up to the thread guide
lower the presser foot.
Lower the needle bar to the lowest position.
Hold the thread end and mark the point
x
thread beside the thread guide.
NOTE:
There should be no slack in the thread.
c
Pull the thread gently to the left until it stops (the
check spring e went full stroke).
Measure the length of thread drawn out.
v
b
Loosen the setscrew
t
guide to adjust the stroke.
• If the length is too long, turn the guide in the direction A.
• If the length is too short, turn the guide in the direction B.
Tighten the setscrew
n

12. Pre-tension Dial

The standard position of the pre-tension dial is as follows:
q
The screw head sinks 4 mm below the dial face.
on the
w
r and move the tension dial
.
r
q and