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P 7/17
[3] DISASSEMBLY/ASSEMBLY
[3] -4. Motor Section
Repair
1) Disassemble Handle section as illustrated in Fig. 2
2) Separate the contact of Carbon brushes from Commutator as described in Fig. 11.
3) Disassemble Crank housing complete from Motor housing as illustrated in Fig. 12.
4) Remove Piston from Crank shaft as illustrated in Fig. 13.
DISASSEMBLY
1. Disconnect Crank housing cover
from Crank housing complete
by unscrewing M4x25 Hex socket
head bolt; no need to remove the
cover in this step.
2. Lifting up Crank housing cover,
remove Barrel section from
Crank housing by unscrewing
four M5x25 Hex socket head
bolts.
3. Disassemble Crank housing
complete from Motor housing
by unscrewing four 5x25
Tapping screws.
1. Remove Rear cover from Motor housing.
Fig. 11
Fig. 12
Crank housing cover
M4x25 Hex socket
head bolt (1 pc)
5x25 Tapping
Screw (4 pcs)
M5x25 Hex socket
head bolt (4 pcs)
Motor housing
Crank housing complete
Rear cover
4x18 Tapping screw
(2 pcs)
Motor housing
2. Remove the end of Spiral spring
from Carbon brush because
Carbon brush is pressed with
Spiral spring to maintain secure
contact with Commutator.
3. By pulling Carbon brush,
separate the contact of
Carbon brushes from
Commutator.
[Spiral spring and Carbon brush
viewed from A]
Carbon brush
Spiral spring
M4x18 Pan head
screw (4 pcs)
Crank cap
Crank housing
complete
Crank chamber,
viewed from Crank cap side
1. Remove Crank cap by unscrewing
four M4x18 Pan head screws.
Piston
Fig. 13
2. For easy removal of Piston,
move it to the front dead center.
PistonM4x16 Hex socket
head bolt (2 pcs)
3. Remove Piston, then unscrew
two M4x16 Hex socket head
bolts that fasten Crank section
to Crank housing complete.
A