C. Mechanical maintenance
1. Adjusting the focus tension
Tension comes pre-adjusted by the factory. The best point of tension is that which permits
the focus knobs to move as loosely as possible without the head sliding down from its own
weight.
The tension adjustment collar for focusing is situated between the focusing knob (16) and
the head holder (15).
a. Loosen the screw located in the collar hole with the 2mm hexagonal key.
b. To increase the tension, turn the collar counter-clockwise; to decrease it, turn the collar
clockwise.
c. Re-tighten using the hexagonal key.
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