Adjusting The Primary Shaft - Secondary Shaft Chain Tension - Technogym BIOSTRENGTH LINE Service Maintenance Manual

8.12. ADJUSTING THE PRIMARY SHAFT - SECONDARY SHAFT
CHAIN TENSION
This operation holds for the Abdominal Crunch, Lower Back, Leg Extension and Leg
Curl.
Figure 8.12-1
Page 8.30
BIOSTRENGTH LINE: Service & Maintenance manual - rev. 2.1
1. Loosen the 4 screws a fastening the
secondary shaft to the frame.
2. Adjust the nut b and the screw c so that there
is a drop in the chain of approximately 1 cm
in the center between the 2 shafts.
3. Test the movement value in the center for the
various lever positions.
Make sure that the above adjustments
keep the axes of the primary and
secondary shafts in alignment.
To make sure the chain tension is
correct, move it back and forth along the
entire crown of the primary shaft.
When this operation is complete, check
the chain alignment as described in the
paragraph 8.11. .