P 4/ 15
(1) Remove Sprocket guard, Guide bar and Saw chain from machine.
(2) Remove Clutch drum assembly. (
Figs. 4 and 5
)
(3) Turn Hand guard toward Chain bar top side to operate Chain brake.
Note
: This allows the tension of Brake guard to be relaxed.
(4) Remove two 3x10 Tapping screws and Brake cover from Engine
housing complete. (
Fig. 6
)
(5) Lift the round portion of Brake band in the direction of the arrow.
(
Fig. 7
) And then, remove the hooked end portion of Brake band.
Brake band is removed from brake mechanism.
(6) Hold Machine so as not to be moved.
(7) Pull and remove Tension spring 10 with 1R199 in the direction of
the arrow drawn in
Fig. 8
.
Note
: Wear gloves for safety.
Fig. 6
Fig. 8
R
epair
DISASSEMBLING
[2] DISASSEMBLY/ ASSEMBLY
[2]-3. Chain brake section
Assemble the components by reversing the disassembling procedure.
Note
: • Be sure to apply Makita grease N No. 2 on the engaged teeth of Helical gear 18 and Helical gear 11.
• Make sure that Hand guard guide is not unhooked. Push it back into position that is 4mm distance from Pin B
using Screwdriver so that Hand guard guide and Hand guard can be set in place.
• Be sure to use the new Stop ring E-4.
ASSEMBLING
Engine housing complete
3x10 Tapping
screw (2 pcs.)
Brake cover
(8) Remove Starter complete. Refer to
[2]-7
“Recoil starter section”.
(9) Remove 4.7x16 Hexalobular tapping screw and Flat washer 5 from
Starter complete installation side on Hand guard. (
Fig. 7
)
(10) Remove Stop ring E-4 from Pin A of Engine housing complete. (
Fig. 7
)
(11) Lift up the Pin A side of Spacer sheet metal, and then lower it a little
to remove the Pin B side of Spacer sheet metal from Pin B.
Remove Spacer sheet metal from Engine housing complete completely.
(12) Remove Bush 6 from Pin A/ B (one each). (
Fig. 7
)
(13) Cover Engine housing complete with cloths, and hold them in Vise.
(14) Remove Link plate complete from Engine housing complete
in the horizontal direction of Pin A/ B. (
Fig. 7
)
(15) Remove Muffler section. Refer to
[2]-4
“Muffler section”.
(16) Remove the recoil starter side end of Hand guard in the direction of Muffler installation side, then move the chain bar
side end of Hand guard back and forth lightly to remove from Pin B of Engine housing complete.
Tension spring 10
1R199
Fig. 7
Stop ring E-4
Spacer sheet
metal
Pin B of Engine
housing complete
Pin A of Engine
housing complete
Hand guard
[viewed from Chain bar installation side]
Brake band
Engine housing complete
Link plate complete
Tension spring 10
Pin B of Engine
housing complete
Pin A of Engine
housing complete
Bush 6 (2 pcs.)
Spacer sheet metal
Flat washer 5
4.7x16 Hexalobular
tapping screw
Stop ring E-4
Hooked end portion
of Brake band
Round portion of Brake band
Bush
Link plate complete
Hand guard guide
Compression
spring 6
Bush
4mm
