– 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
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 1 setscrews and
remove belt cover.
™ Remove three 2 setscrews and
remove motor cover.
Assembly
™ Attach belt cover and tighten 1
setscrews.
™ Attach motor cover and tighten 2
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 1 setscrews.
™ Disconnect and remove 2
connector.
Assembly
™ Insert 2 connector.
™ Align 6 convex with 5 slit 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
4 indicating needle.
Disassembly
™ Disconnect 1 connector and 6
remove.
™ Remove 2 setscrews and remove
3 face plate asm.
(together with face cover).
Assembly
™ Attach 3 face plate asm., tighten
it with face plate asm. 2
setscrews, and attach 6 hand
lifter lever spring.
™ Insert 1 connector.
2 Motor cover setscrew
SM5041255SN
1 Belt cover setscrew
SM5041255SN
4 MAIN circuit
board case cover
2 Bobbin
winder
connector
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