Adjusting The Height Of The Top Feed Dog; Prohibited Adjustment; Adjusting The Pressure Of The Top Feed Dog; Conversion Between Moj-2500N And Mok-2500N - JUKI MOJ-2500N Instruction Manual

8. ADJUSTING THE HEIGHT OF THE TOP FEED DOG
T o adjust the height of the t o p feed dog, loosen setscrew
@
t o
release the t o p feed dog. Then, move t o p feed dog
0
up o r
down t o obtain the desired height. T h e standard height of the
top feed dog is such that it juts 1.8 m m from the throat plate
surface when it is in the lowest position of its stroke. When
sewing light-weight materials, adjust the height of the t o p feed
dog s o t h a t it comes in slight contact with the b o t t o m feed dog.
9. PROHIBITED ADJUSTMENT
Never adjust supporting arm stopper screw
0
.
If the screw should be tampered with, the normal motion of
the t o p feed dog will be disturbed and extremely hlgh load
will be applied t o other parts, resulting in shortened life of
1
1
1
10, ADJUSTING THE PSESSURE OF THE TOP FEED DOG
I
.
~
--.
~
...
~
.~
- 7
Loosen nut
0
and turn adjusting screiv
@
In to Increase the
/
pressure of rhe top feed dog and t h e feeding power accordingly. The
following table shows standard height
0
of adjusting screw @
.
' - - -
.~
(Cautions)
1. If the top feed dog jumps with a louder noise during operation, turn the adjusting screw in until the noise i s reduced.
2. Do not operate the top feed dog with i t s loud noise uncorrected for a long time,or other related parts may be adversely affected.
3. Do not give the top feed dog more pressure than necessary, or the sewing machine will be subjected t o extra load which exerts
bad influence on the durability of the machine.
4. It should be noted that Dimensions
0
shown in the above table (heights t o apply slightly higher pressure of the top feed dog)
are applicable to the longitudinal strokes of the top feed dog and the sewing speeds specified in the above table. Accordingly,
Dimension
0
may be increased to apply lower pressure of the top feed dog if the machine i s operated a t a lower sewing speed
or with a smaller longitudinal stroke of the top feed dog than those specified in the table.
1
I 1 . CONVERSION BETWEEN M O J - 2 5 0 0 N AND M O K - 2 5 0 0 N
F o r MO?
Top feed
dog
When converting the MOJ-?SOON t o the MOK-?SOON and vice versa, replace the presser-
foot (asm) and the t o p feed dog. then adjust the top feed arm stopper, and the vertical
stroke arid pressure of the top feed dog according to the following table:
I
I
MOJ-?SOON/UOK-?~OON/ Remarks
I
T o p feed arm stopper
~
Refer t o "7. ADJUSTING T H E TOP
DIFFERENTIAL FEED RATIO".
1
Refer t o "6. ADJUSTING T H E
feed
1
4.5
-
6.5
1
5
-
6.5
stroke ( m m ) I
VERTICAL STROKE O F THE TOP
, FEED DOG".
Height of top feed dog 15.5
-
16.5
-
Refer t o "10. ADJUSTING T H E
adjust screw ( m m )
1
16,5
1
PRESSURE O F T H E TOY FEED
I DOG".
Please do not hes!tale l o conracr obr d l s t r ~ b i l t o : ~ or agents n vour area f o r further ~ n f o r r n a t ~ o n s whr
necessary
%Appear arld s ~ e c i f c a t ~ o r >
l s t e d in :hs instruc!ion rnariual a r e subjected t o change w t h o u t n o t ~ c e
JUKl CORPORA1-ION
HEAD OFFICE BUSINESS OFFICE CABLE JUKl TOKYO
2-1 8-CHOME KOKURYO CHO 23 3 KABUKI CHO 1 CHOME
TELEX 322967 232 2301
ChOFU CITY TOKYO JAPAN SHINJUKU K U
TOKYO 160
JAPAN
PHONE 03(205)1188 1189 1190
1 9 9 0 7
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