– 20 –
25. POSITION OF THE FRAME THREAD EYELET
1
2
26. THREAD TRIMMING (MH-481-4, MH-481-5, MH-484-4, MH-484-5)
1. Moving knife mounting plate assembly
The preliminary test for thread trimming and thread clamping can be done independently on the moving knife
mounting plate assembly.
(After the following adjustments have been completed, hook the threads manually with the recessed part of the
moving knife, pull the moving knife into the counter knife to clamp the threads and the thread will be trimmed off.)
Dimensions of the counter knife
When sharpening the counter knife, correct it with the
part
A
so as to
fi
nish it in the size of 0.5±0.05 mm.
A
24. POSITION OF THE THREAD TAKE-UP LEVER
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be
sure that the motor has totally stopped rotating in prior.
WARNING :
To avoid possible personal injury due to abrupt start of the machine, turn off the power to the machine and check to be
sure that the motor has totally stopped rotating in prior.
The thread tension changes by moving intermediate
thread guide
1
up and down.
The thread tension is increased by moving the intermediate
thread guide upward, or decreased by moving it downward.
In general, adjust the position of setscrew
2
referring
to the table below.
Thread used
Scale on the intermediate thread guide
Cotton
thread
#80 to #50
2 to 3
#30 to #20
3 to 4
Synthetic
thread
#80 to #50
1 to 2
#30 to #20
2 to 3
Summary of Contents for MH-481
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Page 3: ...ENGLISH ENGLISH ...
Page 39: ...DEUTSCH DEUTSCH ...
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Page 75: ...FRANÇAIS FRANÇAIS ...
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Page 111: ...ESPAÑOL ESPAÑOL ...
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Page 147: ...ITALIANO ITALIANO AVVERTENZE PER LA SICUREZZA ...
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