– 4 –
1. Arm cover asm.
3. Face plate asm.
Preparation
™Remove arm cover.
2. Belt cover and motor cover
Outer Components
1 Arm cover setscrew
SM5042005SN
3 Arm cover
6 Convex of presser
spring regulator knob
5 Slit of presser regulating screw
4 MAIN circuit board case cover
2 Bobbin winder connector
Point
™ There should be no difference in
level between belt cover and front
face of frame.
™ Make motor cover come closely
contact with belt cover.
Disassembly
Remove four setscrews of 1 and
remove belt cover.
Remove three setscrews of 2 and
remove motor cover.
Assembly
™ Attach belt cover and tighten
setscrews.
™ Attach motor cover and tighten
setscrews.
Point
™ There should be no torsion or
distorsion in presser spring
regulator.
™ Align precisely slit portion with
convex portion.
™ Do not press each lead wire.
Disassembly
Remove two setscrews of 1.
Disconnect and remove connector of
2.
Remove MAIN circuit board case
cover of 4.
Assembly
Attach case cover of 4.
Insert connector of 2.
Align convex of 6 with slit of 5 and
tighten the setscrew.
3 Face plate asm.
1 Lamp connector
5 Face cover
2 Face plate asm. setscrew
SL5040631SE
6 Hand lifter lever spring
4 Indicating needle of
presser spring regulator
Point
™ There should be no difference in
level around the cover when face
cover is closed.
™ 5 should not come in contact with
indicating needle of 4.
Disassembly
Disconnect 1 connector and remove
6.
Remove setscrews of 2 and remove
3 face plate asm.
(together with face cover).
Assembly
™ Attach face plate asm. and tighten
setscrews.
™ Insert connector.
2 Motor cover setscrew
SM5041255SN
1 Belt cover setscrew
SM5041255SN