Adjusting The Amount Of Oil In The Hook - JUKI LK-1941 Manual De Instrucciones

20130424 LK-1941,1942 R08

7. Adjusting the amount of oil in the hook

Paper
2
2
3
Remove rubber cap 1, turn clockwise adjustment
screw 2 to decrease the amount of oil in the hook,
and counterclockwise to increase the amount of oil in
the hook.
1
Adjust the amount of oil when the followings occur.
a. Decrease the amount of oil in the hook when oil in
the oil tank on the machine bed side decreases
quickly.
b. Decrease the amount of oil in the hook when oil
splashes from the hook are many and oil leaks from
the hook cover.
c. Increase the amount of oil in the hook when the
hook noise is large.
d. Increase the amount of oil in the hook when pulling
up of needle thread is deteriorated due to the
shortage of lubrication.
After performing the adjustment, be sure to operate
the sewing machine with the pattern No. 60 for
checking the amount of oil in the hook to check the
amount of oil.
1) Remove oil shield plate . (See p.38.)
1
2) Remove the needle.
3) Insert a sheet of paper between thread breakage
detector plate 1 and thread take-up spring 2for
insulation.
4) Allow a sheet of paper in approximate 30 mm
square to come near the position of approximately
10 mm in the side direction of the hook, and operate
the sewing machine with the pattern No. 60. (Set
the number of rotations to the maximum one.)
5) After performing operation of one cycle, confirm
the amount of oil through the oil mark adhered to
the paper3.
The amount of oil in the hook does
not change immediately after the
adjustment. Be sure to check the
amount after operating the sewing
machine for approximately 10
minutes.
45