62
Fitting:
● Lift complete hook driving shaft 28 out of the lower right calotte bearing 92 as far as it will go (fig. 78).
● Pull the flat toothed belt between calotte 95 and calotte bearing 92.
● Place hook driving shaft 28 together with calotte 95 in the lower right calotte bearing 92 exactly.
● Fit clamping plate 91 and fasten with screw 90.
● Pull flat-toothed belt 98, which is in the inner housing, upwards.
● Feed arm shaft 106 from the right into the housing (fig. 77).
● Place flat-toothed belt 98 over arm shaft 106.
● Feed arm shaft 106 into needle bar crank 101.
● Insert arm shaft 106 into calotte bearings 104 and 105.
● Fit clamping plates 103 and fasten with screws 102.
● Check for free movement of arm shaft, if necessary establish the free movement.
● Place flat-toothed belt 98 onto the upper and lower sprockets 93 and 94.
● Set the flat-toothed belt's tension according to section 1.
● Turn the handwheel until the fastening screw of the synchronizer control cam 32 faces downwards
(fig. 79).
● At the same time pin 107 on the upper sprocket faces upwards.
● Press needle bar crank 101 against the calotte of the left calotte bearing 104. At the same time tighten
screw 100 on needle bar crank 101.
● Check for free movement of the arm shaft, if necessary establish it.
● Attach connecting rod 99 (fig. 77).
● Mount lockwasher 51 onto the needle bar frame.
● Attach pull-spring 96.
● Attach circlip 97 to the zigzag stepping motor.
● Attach connection plugs 7, 12, 13, 14, 15 and 16 to the circuit board on the front housing shell.
● Mount the front housing shell and fasten with torx screws 17, 18 and 19.
● Mount the rear housing shell and fasten with torx screws 10 and 11.
● Mount the stand cover and fasten with torx screws 5.
● Attach the needle plate.
● Attach connection plugs 3 and 4 to the circuit board on the baseplate.
● Locate the baseplate, the freearm lid with bobbin thread monitor and the buttonhole sensor to the right
next to the machine.
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