Standard Adjustment; Height And Inclination Of The Feed Dog; Adjusting The Feed Timing; Adjusting The Feed Timing (Excluding A-Sr) - JUKI IP-100A Engineer's Manual

3. STANDARD ADJUSTMENT

(1) Height and inclination of the feed dog

Standard height : 1.2 mm : LZ-2290A-SS,
: 1.4 mm : LZ-2290A-SU, LZ-2290A-DU
Inclination : The feed dog should be almost leveled
when the top surface of the ascending feed
dog is flush with the top surface of the
throat plate. (A-SS, A-DS, A-SR)
1.2 mm
Leveled
A

(2) Adjusting the feed timing

1) Adjusting the feed timing (Excluding A-SR)

Marker line
engraved on
thread take-
up
Standard Adjustment
LZ-229A-DS, LZ-2290A-SR
Operator's
side
Leveled
2
3
Hole for
screwdriver
Standard Adjustment
Timing mark I
engraved on
face plate
Timing mark J
engraved on
face plate
Reference for the height and inclination of the
feed dog
™ When the respective marker dots are
leveled, the height is 1.2 mm and the
inclination is leveled. (A-SS, A-DS, A-SR)
Throat plate
Position of marker dot
(Inclination)
1
A
Feed
Feed rocker
rocker rod
cam
Alignment of
timing marks
6
− −
1.2 mm
Feed dog
Position of marker dot
(Height)
B
Top suface of
throat plate
Comes down.