GRAPHTEC FCX2000 Service Manual page 123

(10) Move the Y bar to the far right and the far left several times, and then confirm the X belt is not touching
to the flange of X idler pulley.
(11) Adjust the belt tensions if the belt is touching to the flange of X idler pulley.
(12) Apply a few quantity of the silicon grease to the X drive pulley if the belt is replaced.
Note:
Do not use grease other than the silicon-grease.
The other grease will be the cause of chemical damage to the belt.
(13) Tighten the two M4L6 binding head screw fixing the idler bracket.
M4L6 binding head screw
FCX2000-UM-251-9370
Flange of idler pulley
Idler bracket
Rear X belt
8 DISASSEMBLY AND ASSEMBLY
Confirm the X belt is not touching
to the flange of X idler pulley.
Rear X belt
Idler bracket
M4L6 binding head screw
Use this access hole to loosen the screw of front.
8-48
Rear X belt