Thanks God for the internet and thanks for the service like this - proffessional solution on time.
Text excerpt from page 13 (click to view)
CDP-CE575 SECTION 4 ASSEMBLY
Note: Follow the assembly procedure in the numerical order given.
ADJUSTING PHASE OF SWING GEAR AND GEAR (U/D)
5 stopper washer (FR) 4 Push fully the shaft of shaft gear and align the hole shape of gear (loading B). 3 Let the swing gear through under the chassis h and engage its dowel g with the groove f of rotary encoder. 6 screw (PTPWH M2.6)
2 Install the rotary encoder so that its groove f comes to the position shown in the figure.
1 Insert the shaft gear up to the position where its shaft comes out by 5 mm.