Janome 1200D - Chain Looper: Angular Position, Clearance, Orbital Timing, Clearance of Chain Needles Guard

11a
CHAIN LOOPER : ANGULAR POSITION - CLEARANCE - ORBITAL
TIMING - CLEARANCE OF CHAIN NEEDLES GUARD
1.5~1.8mm
a
c
Fig.1
d
e
L2
L0
Fig.2
Fig.5
Fig.3
Motion
L2L0
0~0.05mm
1.0~2.0mm
0~0.05mm
Fig.4
e
0~0.1mm
f
f
27