CLEARANCE
(0.8 MM)
1
REMOVE THE FACE PLATE, TOP COVER AND
THREAD GUIDE COVER.
2
SET THE THREAD TENSION DIAL TO “9”.
LOWER THE PRESSER FOOT LIFTER.
3
TURN THE THREAD TENSION RELEASE GEAR
COUNTERCLOCKWISE UNTIL IT STOPS.
4
CHECK THE GAP OF UPPER THREAD TENSION
DISKS. THE CLEARANCE SHOULD BE 0.8 MM.
IF THE CLEARANCE IS SMALLER THAN 8.0 MM
LOOSEN THE SETSCREW (A) AND (B). TIGHTEN
THE SETSCREW (B) LIGHTLY. SLIDE THE BASE
TO THE FRONT. TIGHTEN THE SETSCREW (A)
AND (B) SECURELY.
5
ATTACH THE THREAD GUIDE COVER, TOP
COVER AND FACE PLATE.
TO CHECK
TURN THE THREAD TENSION RELEASE GEAR
COUNTERCLOCKWISE UNTIL IT STOPS.
THREAD TENSION
RELEASE GEAR
THREAD TENSION RELEASE GEAR
FIG. 1
S E T S C R E W
(A)
SETSCREW (B)
TO CHECK
BASE
FRONT
TO ADJUST THE UPPER THREAD TENSION RELEASE (2)
UPPER THREAD TENSION DISKS SHOULD OPEN 0.8 MM WHEN THE TENSION
RELEASE MOTOR OPERATES. IF NOT, ADJUST FOLLOWS.
THREAD TENSION RELEASE PLATE
21
0.8 MM
(THICKNESS OF THE GAUGE 860G002)
Summary of Contents for MC6600
Page 1: ...Revised on October 20 2005...
