Hitachi H 25PV Technical Data And Service Manual page 17

First gear and crank shaft disassembly
Remove the Hex. Socket Hd. Bolts (W/Flange) M5 x 16 [70] and the Tapping Screws (W/Flange) D5 x 20
(Black) [71] fixing Handle (B) [69] and Handle (A) [80], then Handle (B) [69] and Handle (A) [80] can be
removed from the Crank Case [46] and Housing Ass'y [65] (Fig. 17). Remove the Hex. Socket Hd. Bolts
M6 x 35 [47] fixing the Crank Case [46], then the Crank Case [46] can be removed from the Housing Ass'y
[65]. Two bolts M5 are inserted in M5 screw holes of First Gear [52]. Remove the First Gear [52] from the
Crank Shaft [40] by using the bearing puller ass'y (J30, No. 970804) (Fig. 18). Place the Connecting Rod [38]
side of the Crank Case [46] downward on a workbench and apply pressure on the end surface of the Crank
Shaft [40] with a hand press to remove the First Gear [52] and the Crank Shaft [40] (Fig. 19).
Crank case cover
(Inside crank case)
Housing
ass'y
Hand press
Bolt M5 x 16
Tapping screw D6
Fig. 17
Crank shaft
Crank case
Workbench
Fig. 19
Handle
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Bearing puller ass'y
Bolt M5
First gear
Crank case
Crank shaft
Fig. 18