Instruction manual

5.5 Fitting and tensioning the V-belt

Only concer ns machines with motor on the table plate bottom.

V-belt 2, V-belt pulley 1 and belt guard are part of the drive set

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Fix the V-belt pulley 1 on the shaft of the s ewing drive.

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Put the V-belt on the belt pulley 6 on the machine head.

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Pass the V-belt 2 down through the cutout of the table plate.

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Tilt the sewing machine head to the back.

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Place the V-belt 2 on the V-belt pulley 1.

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Tilt the machine head back to the front.

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Loosen the screw 3 on the socket 4 of the sewing drive.

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Tension the V-belt 2 by swivelling the sewing drive 5.

With the correct belt tension the V-belt 2 bows by about 20 mm at

its mid-point under a load force of F =10 N (~1 kg).

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Tighten the screw 3.

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Set the belt inlet protection 9 and the belt catch device 10 of the

belt guard 11. The V-belt 2 must remain on the belt pulleys when

the sewing machine head is tilted backwards. See the motor

manufacturers’ operating instructions!

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Screw on the belt guard cover 11.

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