Ricoh FT7770 Service Manual page 492

50Hz/60Hz Modification
Loosen the belt tension bracket screw [A] and release the timing belt
1.
[B] from the sorter stapler motor pulley.
Loosen the two Allen screws and remove the sorter stapler pulley [C].
2.
Reverse the sorter stapler pulley and install it so that it is flush
3.
with the end of the sorter stapler motor shaft.
4. Adjust the sorter stapler motor drive belt tension. There should be
6,0 ± 1.0 mm (0.24" ± 0.04") deflection of the belt when 200 grams
pressure is applied.
11-33
30 April, '89