Service manual

S-4000 ISBH+I Omron
Revised 12/2008
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1-46
18. CHANGING THE DRIVE BELT
1. Remove the pulley cover ➊ after loosing the M4 screws ➋.
2. By turning the handwheel ➌ adjust the position of the shaft so that the screw ➍ on the pulley ➎
is level with screw ➏ on the bearing carrier lower shaft.
3. Lock the position by the holder 24.0030.0.000 ➐, which is included in the accessories. Using
the screw ➏ fix the holder to the bearing holder upper screw.
4. Turn the pulley ➑ of the needle bar shaft, until the needle bar reaches the upper position.
5. Lock the position by the holder 24.0024.0.000 ➒, which is included in the accessories. Using
the screw ➓ fix the holder to the bearing carrier lower mounting screw.
6. Rotate the motor pulley until the marks on the motor pulley and the motor bracket are
aligned.
7. Loosen the screws on the motor bracket and move the motor with the machine bracket
down to fit the belt.
8. Fit the belt on the shaft pulleys ➎, ➑ and motor pulley . To tighten the belt , move
the motor bracket with motor up. Tighten the screws to lock the motor bracket. Be sure
the marks are aligned.
9. Remove the pulley holders ➐, ➒.
10. Press the pedal to check the adjustment. The needle bar must be in the upper position.
11. Small changes of the needle bar adjustment are possible in the program parameters:
a) needle bar did not reach the upper position


 push á á to obtain the correct position of the needle bar, increase
the value


 press ,
to return to the main screen.
b) needle par went eyond
the upper position


 push á á
to obtain the correct position
of the needle bar, decrease
the value


 push ,
to return to the main screen
E - MACHINE ADJUSTMENTS