JUKI LK-1900B series Engineer's Manual

– 10 –
(2) Removal of the main shaft motor and coupling
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
Procedures of disassembling
1. Removal of the main shaft motor together with coupling
Loosen the two setscrews
❺
on the main shaft side of the coupling
❷
.Then,removethefourmotor
setscrews
❹
.
2.Toremovethecoupling
❷
from the main shaft motor
❸
, loosen the two setscrews
❻
on the main shaft
side.
(Caution) Turn the main shaft
❶
in the direction of forward rotation
A
. The screw (hole) that can be
seen rst is the No. 1 screw. Loosen the screws, starting with the No. 2 screw. Tightening
should be done, starting with the No. 1 screw.
No. 1 screw
No. 2 screw
No. 1 screw
Flat section
Cord
0.5 mm

JUKI LK-1900B series Specifications

General

Brand	JUKI
Model	LK-1900B series
Category	Sewing Machine
Language	English