P 9/ 17
Repair
[3]DISASSEMBLY/ASSEMBLY
[3]-5 Crank shaft
DISASSEMBLING
(1)Separate Barrel from Crank housing. (Fig. 15)
(2)Remove Crank cap, Seal ring, Air pipe and Flat washer 34 from Crank housing. (the left illustration in Fig. 16)
(3)Remove Piston together with Connecting rod ( the right illustrations in Fig. 16)
Note: Turn Crank shaft so that the crank pin is at the closest position to Barrel side for easy removal of Connecting rod.
(4)remove Crank shaft as illustrated in Figs. 19 and 20.
Fig. 19
1.Keeping Crank shaft in the condition Crank pin is at the closest position to Barrel side, hold Armature by inserting a bar into Armature fan.
Bar to hold Armature fan
Barrel 
side 
Crank pin at the closest position to Barrel side
2.Put 1R139 on Crank housing, facing 13mm notch to Barrel side.
Fig. 20
3.Putting Flat washer 8 on 1R139, drive M8x40 Hex socket head bolt to the center hole of Crank housing through Flat washer 8.
4.Tighten the M8x40 Hex socket head bolt using Hex wrench until Crank shaft is pulled off from Ball bearing 6203LLU in Crank housing.
| M8x40 Hex | Bar to hold | Hex wrench | |
Bar to hold | socket head bolt | Armature fan | ||
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Armature fan | Flat washer 8 |
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Crank pin is locked by 1R139.