Kenmore 16677 - Serger Sewing Machine Servicing Manual page 18

TO ADJUST THE CLEARANCE BETWEEN
THE NEEDLES AND THE LOWER
LOOPER/NEEDLE GUARDS (3 of 3)
CORRECT SETTING:
THE STANDARD CLEARANCE BETWEEN THE NEEDLE AND THE TIP OF THE LOWER LOOPER SHOULD BE
0 MM TO 0.05 MM.
TO ADJUST:
1. CHANGE THE RIGHT NEEDLE FROM #11 TO #14.
LOOSEN THE HEXAGONAL SOCKET SCREW (A).
2. PUSH THE RIGHT NEEDLE WITH THE FRONT NEEDLE GUARD TO ADJUST THE CLEARANCE BETWEEN
THE NEEDLE AND THE TIP OF THE LOWER LOOPER. THE CLEARANCE SHOULD BE 0 MM TO 0.05 MM.
TIGHTEN THE HEXAGONAL SOCKET SCREW (A).
3. ATTACH #14 NEEDLE TO THE LEFT NEEDLE CLAMP.
TURN THE HANDWHEEL TOWARDS YOU TO CHECK THE CLEARANCE BETWEEN THE LEFT NEEDLE
AND THETIP OFTHE LOWER LOOPER.
MAKE SURE THE FRONT NEEDLE GUARD IS TOUCHING THE NEEDLE SLIGHTLY AND THE REAR
NEEDLE GUARD IS NOT TOUCHING THE NEEDLE.
4. CHECK THE TIMING BETWEEN THE NEEDLE AND THE LOWER LOOPER.
5. RECHECK THE NEEDLE BAR HEIGHT AND THE CLEARANCE BETWEEN THE NEEDLE AND THE LOWER
LOOPER.
NEEDLE #14
FRONT NEEDLE_
GUARD
(REAR NEEDLE GUARD IS NOTTOUCHING THE NEEDLE.)
O.O5MM
FRONT NEEDLE_ /_ HEXAGONAL
LOOPER GUARD _ (_1 ///SOCKET
REAR NEEDLE GUARD ___/SCREWS (A)
0 TO 0.2 MM
REAR NEEDLE GUARD
16