42
19X Service Manual
Replacing the Bobbin Case Springs
Tension Spring Instructions
Take the following steps to replace the tension spring on the bobbin case:
Parts & Tools Needed:
Small Flat-Head
Screwdriver
Thread Tension Spring
SMP-03-13101
Screws (x2)
Tension
Spring
Use the small flat-head screwdriver to remove the two
screws
holding the
thread tension
spring
to the outside of the bobbin case.
1
Anti-Backlash Spring
SMP-03-13104
Small Bobbin
Case Screw
SMP-03-13102
Large Bobbin
Case Screw
SMP-03-13103