IAI America IF - Manual (Page 54)

5. Maintenance inspection
48
2) Remove the belt cover.
Remove the machine set screw (4 locations) on the motor side and also the opposite side.
(Use a hexagon wrench with the distance to the opposite side of 2 mm).
3) Loosen the belt tension until the pulley is turned without making contact.
• Fix the hexagon nut using the 8 mm
spanner wrench.
• Loosen the adjusting bolt.
(Use a hexagon wrench with the distance
to the opposite side of 4 mm)