ADJUSTMENT FOR DIFFERENTIAL FEED UNIT OPERATED WITH 17
STEPPING MOTOR
1. Loosen set screws "1" and "2" for D.F. step motor gear "C" .(Fig.1)
2. Insert Gauge pin "A" (No.11685) into two holes on the both gears "C " and "D"of D.F.
stepping motor. (Fig.1)
3. Set a gauge roller "B" (No.11686) into the guide of feed rock lever,back "E"and keep
in touch with a D.F. regulator slide block "G" certainly onto the guage roller "B".(Fig.2)
4. Tighten set screws "1" and "2" of the gear "C". (Fig.1)
5. Secure the indication of stitch length number as "4" and D.F. as "1" on the LCD-display
and perform its work test. If the feed length of front feed dog is larger than the same
of the rear feed dog, loosen screw "3" and adjust the set position of the sensor in
the direction of "R" , so that the both feed dogs have a equal feed length. (Fig.1)
6. On the contrary, if the feed length of the front feed dog is shorter, loosen the screw "3"
and adjust the set position of the sensor in the direction of "F". (Fig.1)
E
G
D
A S
C
B
R
F
Fig.2
Fig.1
3
1
2
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