Motus M660BR, Service Manual

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2.1 How to Adjust the Drive Belt (or POLY V-BELT) Tension
The tension of the Drive Belt can be slackened by a long time use and it can cause a slip
between the Drive Belt and Pulleys. The tension is corrected by rotating the TENSION BOLT
connected to the TENSION SPRING.
2.1.1 M660BU/BUL
Do the steps below while referring to the following Exploded Views in Appendix.
C.1 M660BU/BUL_MAIN BODY
1) Turn off the unit power at the switch and then unplug the line cord at wall outlet.
2) Remove the CENTER FOOT_UP (61) by removing two bolts (52) securing the CENTER
FOOT_UP (61) to the Main Body Frame.
3) Remove two bolts (55) securing MAIN BODY CAP (54) to the Main Body Frame.
4) Lift the MAIN BODY CAP (54) and SEAT POST CAP (56) and then fix these to the Gas
Cylinder temporarily by a tape to make it easy to remove the MAIN BODY_R (50).
5) Remove five bolts (51, 52) securing the MAIN
BODY_R (50) to the Main Body Frame and remove
the MAIN BODY_R (50).
6)
To increase the belt tension, turn the HEX NUT
(17) clockwise in two or three turns. It makes the
TENSION SPRING (15) tauter.
7) Rotate Pedal in two or three turns and then
measure the tension of the Drive Belt using Tension
Gauge in the position marked in “2”.
8) Repeat 6) thru 8) until the tension reaches 160 Hz.
9) Re-install all of parts in reverse order.
2.1.2 M660BR/BRL
Do the steps below while referring to the following Exploded Views in Appendix.
I.1 M660BR/BRL_MAIN BODY
1) Turn off the unit power at the switch and unplug the line cord at wall outlet.
2) Remove two bolts (52) securing the CENTER FOOT_RE (59) to the Main Body Frame and
Remove the CENTER FOOT_RE (59).
3) Remove two bolts (50) securing the FRONT BODY CAP_FRONT/REAR(58,57) to the Main