Assembling(1) Assemble the parts from 18 to 21.Put the 19 steel balls 3.5 with the 20 compression spring 2.4 installed between the balls into the 3.6 mmdiameter bore at the end of the 18 spindle. Insert the steel balls aligned with the groove in the complete clutchcam assembly by holding the 19 steel balls down. (See the fig. 3.)(2) Mount the parts from (16) to (29) in the (5) housing L.Fit the 28 switch lever in together with the 26 switch and also the 27 compression spring 6. Insert the 17 flatwasher 10 and 16 needle bearing 1015 in this order into the 18 spindle assembled in the above 1. Insert 3 piecesof the 22 spur gears 16 into the 21 complete clutch cam assembly and engage the gears with the 23 internal spurgear 49. Mount the 24 flat washer 15 at the same time.(In assembling the internal spur gear, engage one of its slots against the rotation lock. Mount the 16 needlebearing1015 by bringing it toward the left end as shown in the fig. 4.)(See the figs. 2, 3, & 4.)(3) Assemble the 6 housing R and sub-housing R. (Confirm the 18 spindle can rotate smoothly, and that there is aplay in the axial direction after the housing and sub-housing are assembled.)Hold it downDitchHold it downGrease(18)Spring(21)Complete clutch cam assemblyFig.3(5)Housing LPlace the needle bearing side on the motor side.Bring the 16 needle bearing 1015 against this face.(23)Internal spur gear 49 locking part(28)Put the 28 switch lever throughFig.4