CAUTION
●Never use a bobbin case that is scratched, otherwise the upper thread may become tangled, the needle may break or sewing performance may suffer. For a new bobbin case (part code:
●Make sure that you fit the bobbin case properly, otherwise the needle may break.
qAttach the needle plate cover according to steps h in “Cleaning the race” (page 150).
rCheckinstall it.the condition of the needle, and then If the needle is in a poor condition, for example, if it is bent, be sure to install a new needle.
•Refer to “Checking the needle” (page 39) and “Replacing the needle” (page 39).
CAUTION
●Never use bent needles. Bent needles can easily break, possibly resulting in injuries.
Note
zAfter completing this procedure, continue with the following procedure in “Checking machine operations” to check that the machine is operating correctly.
Memo
zSince the needle may have been damaged when the fabric was caught in the machine, we recommend replacing it with a new one.
■Checking machine operations
If the needle plate has been removed, check machine operations to confirm that installation has been completed correctly.
aTurn on the machine. bSelect stitch 03 
.
Note
zDo not yet install the presser foot and thread.
cSlowly turn the handwheel toward you (counterclockwise), and look from all sides to check that the needle falls at the center of the hole in the needle plate.
If the needle contacts the needle plate, remove the needle plate, and then install it again, starting with step m in “Removing the fabric from the machine” (page 156).
4
12
aHole in the needle plate
bHandwheel
dSelect stitch 07 
. At this time, increase the
stitch length and width to their maximum settings.
•For details on changing the settings, refer to “Adjusting the Stitch Width and Length” (page 59).
eSlowly turn the handwheel toward you (counterclockwise) and check that the needle bar and feed dogs operate correctly.
If the needle or feed dogs contact the needle plate, the machine may be malfunctioning; therefore, contact your nearest authorized service center.
fTurn off the machine, and then install the bobbin and presser foot.
•Refer to “Installing the bobbin” (page 26) and “Replacing the presser foot” (page 41).
Troubleshooting 157