First gear and crank shaft disassembly
Remove the grease from the Connecting Rod [34] side and the First Gear [53] side of the Cylinder Crank
Case [48]. Remove the two Seal Lock Hex. Socket Flat Hd. Bolts M5 x 12 [44] fixing Bearing Cover (A) [45].
Then place the Connecting Rod [34] side of the Cylinder Crank Case [48] downward on a workbench and
apply pressure on the end surface of the Crank Shaft [42] with a hand press to remove the First Gear [53] and
the Crank Shaft [42] (Fig. 14). Before removing them, make sure that the two Seal Lock Hex. Socket Flat Hd.
Bolts M5 x 12 [44] fixing Bearing Cover (A) [45] are removed.
Cylinder Crank Case
9-1-2. Reassembly
Reassembly can be accomplished by following the disassembly procedure in reverse. However, special attention
should be given to the following items.
First gear and crank shaft reassembly
Press-fit the Ball Bearing 6203DDCMPS2L [46] in the Cylinder Crank Case [48] and fix Bearing Cover (A) [45]
with the two Seal Lock Hex. Socket Flat Hd. Bolts M5 x 12 [44]. Press-fit the Crank Shaft [42]. Then mount
the Oil Seal [47]. Put the Feather Key 4 x 4x 10 [43] into the groove of the Crank Shaft [42] and press-fit the
First Gear [53] with a suitable tool while holding the flat portion of the Crank Shaft [42] with a steel bar. Before
press-fitting, make sure that the Feather Key 4 x 4 x 10 [43] fits in the key groove of the First Gear [53]. (Fig.
15)
Cylinder crank case
Crank Shaft
Fig. 14
Suitable tool
Fig. 15
--- 14 ---
Apply pressure on the end
surface of the crank shaft
with a hand press.
First Gear
Bearing Cover (A)
Workbench
Feather key
First gear
Oil seal
Ball bearing
Hex. socket hd. flat
bolt M5
Bearing cover (A)
Crank shaft
Steel bar