Sharp VC-MH80 Service Manual page 33

Note:
Do not over-turn both of the drive gears when the
phase has been matched. These gears are partially
toothless and might come out of mesh with the
synchro gear. In such a case, the phase needs re-
matching.
drive
Align the gear' s round hole with the synchro
gear' s triangular (A> symbol. Do this alignment for
both the drive gears.
33