Adjusting Cable Tension
Pay close attention to maintenance of the cable tension. Over time and with heavy use, the cables are designed to give slightly. Located on the main engine housing is a tension control knob which allows you to increase the tension in the cables.
Checking for problem cable tension is simple.
1.Position the adjustable swing arms in the upper most position.
2.Check to see if clips at end of cable hang down or if they are tight against the pulley.
3.If cables don’t have enough tension, use the tension
control knob on the side of the machine to tighten the cables. (See image below).
4.To increase tension, pull tension knob outwards and turn the large pulley clockwise. The clip on the cable
should be touching the pulley.
The cable clip should stop here.
In this image, the cable clip extends a few inches below the pulley, so there is not enough tension in the cable.The cable clip should be tight against the pulley with appropriate tension.
There are tension knobs on each side of the machine. 
To increase cable tension, pull knob and turn the large pulley clockwise.You’ll know when you have enough
tension when the cable retracts and the cable clip touches the pulley.
Large pulley.This is what you need to turn to increase the tension on the cable. Pull the tension knob and use your other hand to turn the large pulley clockwise.
