M Adjustment Of The Thread Tension Releasing - Mitsubishi Electric LT2-2230-B1T Instruction Manual

HOW TO USE

M Adjustment of the thread tension releasing

( 1 ) Turn the pulley and stop it at the position where the needle comes to the lowest.
( 2 ) Put the cam roller into the thread trimmer cam groove by pushing the cam follower crank.
( 3 ) Turning the pulley, adjust the thread tension releasing cam so that the thread tension disc closes
when the white mark point on the pulley comes in line with the black mark point on the arm.
To adjust, loosen two thread tension releasing cam clamp screws Ⓐ.
( 4 ) The opening amount of the thread tension disc should be adjusted with the thread tension releasing
roller Ⓑ mounted on the convex portion of the thread tension releasing cam, as shown in the figure.
To adjust, loosen screws Ⓒ and pull the wire.
( 5 ) Make fine adjustments by loosening the nut Ⓓ.
( 6 ) Loosen the nut Ⓓ and make the outer casing approach to the right to increase the opening amount.
Thread tension
releasing lever
Screw Ⓐ
Roller Ⓑ
Thread tension
releasing cam
Thread trimmer cam
Cam follower crank
Cam roller
→Increase the
Wire
opening amount
Screw Ⓒ
Nut Ⓓ
Arm
Outer casing
Black mark point
— 17 —
White mark point
Pulley