Mitsubishi LU2-410 User Manual

17. SAFETY CLUTCH (SAFETY DEVICE)
The safety clutch prevents hook and timing
belt from being damaged when the machine
runs under excessive load which is caused
by the hook caught in threads.
(1) Function
1) When the safety clutch is actuated,
timing belt pulley races, causing the hook
shaft to stop and only the arm shaft to
keep turning. Therefore, immediately stop
the machine.
2) Remove threads and other foreign matter
from the hook.
3) Turn the timing belt pulley bushing by
hand to check for smooth rotation of
hook shaft. Then set the clutch mecha
nism back again.
(2) Setting Procedure
1) While simultaneously pressing the push
button, which is located on the other side
of bed, by left hand, slowly turn the
balance wheel by right hand in the direc
tion shown by arrow in the figure.
2)
Now the balance wheel is stopped by the
intermeshing plate provided in the clutch
mechanism. Then turn the balance wheel
again with further greater force.
3) Release the pushbutton which has been
kept pressed.
4) The clutch mechanism is now set as
shown in the figure.
18. ADJUSTMENT OF UPPER FEED (NEEDLE
SIDE) STROKE
When stitching is not made uniformly depending
on fabrics, adjust the upper feed stroke by range
of slot in feed rock shaft crank (right).
[Adjusting Procedure]
1) Loosen the special bolt.
2) When this bolt is set at upper position,
the upper feed stroke increases.
3) When this bolt is set at lower position,
stroke decreases. (The upper and lower
feeds are theoretically equivalent at the
point where the reference line for feed
rock shaft crank is aligned with the center
of special bolt.)
4) After adjustment, tighten the special bolt.
16
Safety switch
Timing belt pulley
Bushing
Balance wheel
Pushbutton
joint portion
Pushbutton
Intermeshing plate
F^ed rock shaft crank (right)
Upper feed stroke
[(needle bar rock link)
Upper feed stroke
Reference
Special bolt.
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

Mitsubishi LU2-410 Specifications

General

Brand	Mitsubishi
Model	LU2-410
Category	Sewing Machine
Language	English