Makita DUR181RT Manual

PRODUCT
CONCEPT AND MAIN APPLICATIONS
P 1/ 10
Models DUR141/ DUR181 have been developed as
lightweight 260mm (10-1/4") Cordless string trimmers for home gardening
powered by the following Li-ion batteries:
DUR141 by BL1415 (14V-1.3Ah), BL1415N (1.5Ah), BL1415NA (1.5Ah),
BL1430 (3.0Ah), BL1430A (3.0Ah), BL1440 (4.0Ah) or BL1450 (5.0Ah)
DUR181 by BL1815 (18V-1.3Ah), BL1815N (1.5Ah), BL1820 (2.0Ah),
BL1830 (3.0Ah), BL1840 (4.0Ah) or BL1850 (5.0Ah)
And they feature well balanced tool design with angle adjustable
cutting head.
Model No.
Description
DUR141/ DUR181
260mm (10-1/4") Cordless String Trimmer
TECHNICAL INFORMATION
*1 The height varies depending on the angle of
the cutting head.
Dimensions: mm (")
Height (H)*1
Width (W)
1,433 (56-1/2)
Length (L) maximum
minimum
maximum
minimum
1,229 (48-1/2)
186 (7-3/8)
257 (10-1/8)
267 (10-1/2)
W
H
L
Standard equipment
Optional accessories
Nylon cutting head
Shoulder belt
Safety goggles
15m Nylon cord
Shoulder belt
Safety goggles
15m Nylon cord
30m Nylon cord
Spool set
Note: The standard equipmentmay vary by country or model variation.
Specification
Cutting width: mm (")
Cord feeding system
Nylon
cutting head
Weight according to EPTA-Procedure
01/2003*2: kg (lbs)
No load speed: minˉ¹=rpm
260 (10-1/4)
160
Bump & Feed
Cutting system Single cord
Nylon cord
[diameter x length] 1.65mm x 8m (1/16" x 26ft)
Edger function Yes
Length adjust range of pipe shaft: mm (") 190 (7-1/2)
6,000
230
7,800
2.9 (6.4)*3
3.1 (6.9)*4
2.9 (6.3)*3
3.0 (6.7)*4
*2 with Battery, Nylon cutting head, Shoulder strap, Guard, Loop handle
*3 with BL1415/BL1415N/BL1815/BL1815N/BL1820
*4 with BL1430/BL1440/BL1450/BL1830/BL1840/BL1850
Battery
Max. output: W
Charging time: min.
Capacity: Ah
Cell
Voltage: V 14.4 18
DUR141 DUR181
Energy capacity: Wh
Li-ion
Model
Specification
OFFICIAL USE
for ASC & Sales Shop
1.3, 1.5, 3.0, 4.0, 5.0
19, 22, 44, 58, 72
15, 15, 22, 36, 45
with DC18RC
1.3, 1.5, 2.0, 3.0, 4.0, 5.0
15, 15, 24, 22, 36, 45
with DC18RC
24, 27, 36, 54, 72, 90
Battery*5
Battery cover*6
Charger*5
*5 Battery and charger are not supplied with “Z” model.
*6 Supplied with the same quantity of extra Battery
For DUR141
Battery BL1415
Battery BL1430
Battery BL1815
Battery BL1820
Fast charger DC18RC
Charger DC18SD
Charger DC24SC
Automotive charger DC18SE
Battery BL1415N
Battery BL1415NA
Battery BL1430A
Battery BL1440
Battery BL1450
Battery BL1815N
Battery BL1830
Battery BL1840
Battery BL1850
Four port multi charger DC18SF
Two port multi fast charger DC18RD
For DUR181

Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -1. Gear shaft complete
(1) Remove Spool set and Safety cover as drawn in Fig. 2.
DISASSEMBLING
Spool set
Reverse side of
Safety cover
Compression
spring 17
1. While pressing the tabs, pull off Spool set.
Compression spring 17 is removed together
with Spool set.
2. Loosen two M4x20 Pan head screws, and remove Safety
cover from Motor housing set.
Tabs of
Spool set
M4x20 Pan
head screw
(2 pcs.)
M4x20 Pan
head screw
(2 pcs.)
Note: Each M4x20 Pan head screw has O ring 4 on the thread
to prevent losing. It is not necessary to separate M4x20
Pan head screws from Safety cover/ O rings 4.
Each O ring 4 on the
thread of M4x20
Pan head screw
Fig. 2
P 2/ 10
Apply Makita grease N. No.2 to the following portions designated with the black triangle to protect
parts and product from unusual abrasion.
[1] NECESSARY REPAIRING TOOLS
CAUTION: Repair the machine in accordance with “Instruction manual” or “Safety instructions”.
Code No. Description Use for
1R022 Bearing plate Supporting Spool holder to remove Spur gear 48
1R217 Ring 22 Supporting Spur gear 48 to remove Gear shaft
1R236 Round Bar for Arbor 7-100 Removing Spool holder
1R286 Round Bar for Arbor 12-50 Supporting Spool holder to press-fit Gear shaft
[2] LUBRICATION
Fig. 1
Item No.
10 Motor housing L Gear room where Spur gear 48 rotates 3 g
Description AmountPortion to lubricate
DC motor
Spur gear 48
10
Motor housing R

Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -1. Gear shaft complete (cont.)
(2) After removing Motor housing R, Remove DC motor and Gear shaft complete as drawn in Fig. 3.
(3) Disassemble Gear shaft complete as drawn in Fig. 4.
DISASSEMBLING
3. Remove five 4x18 Tapping screws and
Motor housing R from Motor housing L.
4. Remove Gear shaft complete together with DC motor.
And separate DC motor section from Gear shaft complete.
Note: Be careful not to lose Rubber pin 4.
5. Remove M4x8 Pan head screw. And then,
install M4 Hex socket head bolt in preparation
of the next step.
6. Receive Spool holder with 1R022 and press M4 Hex
socket head bolt with 1R236. Spool holder is removed.
Fig. 3
Fig. 4
4x18 Tapping screw (5 pcs.)
Motor housing R
Motor housing L
DC motor
Rubber pin 4
(2 pcs.)
Gear shaft complete
Spool holder
Spool holder
Receive the bottom of
Spool holder with 1R022.
1R236
1R022 Arbor press table
Arbor press
1R 217
M4 Hex socket
head bolt
M4 Hex socket
head bolt
Spur gear 48
Spur gear 48
Gear shaft
Ball bearing 696ZZ
Retaining ring S-8
Ball bearing 608ZZ
7. Holding Spur gear 48 with 1R217,
press M4 Hex. socket head bolt on
Gear shaft. Spur gear 48 is removed.
8. Remove Ball bearing 696ZZ, Retaining
ring S-8, Ball bearing 608ZZ and M4 Hex.
socket head screw from Gear shaft.
M4x8 Pan
head screw
Gear shaft
P 3/ 10
M4 Hex. socket
head screw

Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -1. Gear shaft complete (cont.)
ASSEMBLING
1. Press Gear shaft to Spur gear 48 as drawn below.
Press Ball bearing 608ZZ to Gear shaft and secure Ball bearing 608ZZ with Retaining ring S-8.
Press Ball bearing 696ZZ to Gear shaft.
Note: Be careful to the direction of Gear shaft.
Fig. 5
2. Supporting Spool holder with 1R286,
press Gear shaft section to Spool holder.
1R286
Ball bearing 696ZZ
Ball bearing 608ZZ
Compression spring 17
(1) Assemble Gear shaft complete as drawn in Fig. 5.
(2) Assemble Gear shaft complete to Motor housing in the reverse order of Disassembly. (refer to Fig. 3)
3. Apply adhesive (ThreeBond 1342 or Locktite 242) to the thread of M4x8 Pan head screw when reusing it.
Replace M4 Hex socket head bolt to M4x8 Pan head screw with adhesive.
Note: Makita genuine M4x8 Pan head screw is thread locker screw.
Retaining ring S-8
Spur gear 48
Step for Ball bearing 696ZZ
Step for Ball bearing 608ZZ
Gear shaft
Knurling portion
Groove for Retaining ring S-8
Spool holder Gear shaft
section
Note: Make sure that 2 pcs. of Rubber pin 4 are mounted to Motor housing (L).
Note: Make sure that 2 pcs. of Rubber pin 4 are mounted to Motor housing (L).
Note: Be careful not to lose Rubber pin 4.
DC motor can be removed as drawn in Fig. 3.
No need to disassemble Spool set.
[3] -2. DC motor
DISASSEMBLING
ASSEMBLING
Assemble DC motor to Motor housing in the reverse order of disassembly. (Refer to Fig. 3)
P 4/ 10

[3] DISASSEMBLY/ASSEMBLY
[3] -3. Pipe section
DISASSEMBLING
Lock off button B
1. Remove Lock off button B and
Compression spring 12.
3. Remove M6 Nut and M6x60 Hex bolt.
And remove Front grip.
5. Remove Handle (R) from Handle (L) by unscrewing
eleven 4x18 Tapping screws.
Pull out Power supply cord unit from Pipe 25 complete.
2. Remove Pipe holder (R) by unscrewing four 4x18 Tapping screws
and disconnect Lead wires (black, white) from DC motor.
Note: Be careful not to lose Rubber pin 6.
7. While pressing the projections
on the both sides of Pipe 25
complete, pull off Pipe cap
from Pipe 25 complete.
Compression spring 12
(1) Remove Spool set and Safety cover as drawn in Fig. 2.
(2) Separate Motor housing (R) from Motor housing (L) as drawn in Fig. 3.
(3) Disassemble Pipe 25 complete as drawn in Fig. 6.
Fig. 6
Pipe holder (R)
Rubber pin 6
Symbol of
“Lock”
Pipe 25
Symbol of
“Unlock”
4. While aligning the indicator (triangle) on
Lock sleeve to the just center of “Unlock”
and “Lock”, pull off it toward Pipe 25 side.
Pipe 25
Handle (R) complete
Pipe 25 complete
Pipe 25 complete
Rubber sleeve 25
Handle (L) complete
Indicator (triangle)
on Lock sleeve
Lock sleeve
Pipe 25
complete
Pipe cap
Pipe cap
Pipe cap
Projections of
Pipe cap
Lock sleeve
Rubber sleeve 25
Power supply cord unit
6. Remove Lock sleeve and Rubber sleeve 25.
M6 NutM6x60 Hex bolt
Repair
P 5/ 10

[3] DISASSEMBLY/ASSEMBLY
[3] -3. Pipe section (cont.)
ASSEMBLING
Assemble Pipe section as drawn in Figs. 7 and 8.
Fig. 7
Symbol of
“Unlock”
Triangle mark
Fig. 8
Left
Right
Pipe cap
1. Insert Pipe cap into Pipe 25 so that the square
projection of Pipe cap fits in the left side of
Pipe as drawn below.
Next, mount Rubber pipe 25 and Lock
sleeve 25 onto Pipe 25.
2. Pass Power supply cord unit through Pipe 25.
Fit the square projection of Pipe cap into the inner groove of
Handle (L).
Set Rubber sleeve 25 in place of Handle (L).
Assemble Handle (R) to Handle (L).
Square projection
Two holes
on the pipe end
close to caution
label
Hole on the pipe end
Rubber sleeve 25
Lock sleeve
Pipe 25
Rubber pin 6
(2 pcs.)
Caution Label
Notch of Lock
off button B
3. Mount Lock off button B to Pipe holder (R)
so that the notch aligns to the triangle mark
as drawn below.
Note:Make sure that 2 pcs. of Rubber pin 6
are set in place.
Triangle mark on
Pipe holder (R)
Lock off button B
4. While aligning the triangle mark of Lock sleeve to
the symbol of “Unlock” on Handle (L), push Lock
sleeve toward Handle complete until it clicks.
And turn Lock sleeve until its triangle mark aligns
to the symbol of “Lock” on Handle (R).
Handle (L)
Lock
sleeve
Pipe 25
Inner groove
as a guide rail for
Pipe 25 moving
Rubber sleeve 25
Handle (L)
Power supply
cord unit
Square projection of
Pipe cap
Caution label
Note: Face the caution label
upward as drawn in Fig. 8.
Symbol
of “Lock”
Symbol of
“Lock”
Handle (R)
Repair
P 6/ 10
Caution label
Caution label faced upward

Motor
housing
Circuit diagram
Color index of lead wires' sheath
Black
Controller
Red dot mark
LED warning
Lamp
DC
motor
Terminal
Red
White
Handle section
Pipe 25 section
Fig. D-1
Orange
Yellow
Switch
Power supply cord
DUR141, DUR181
P 7/ 10
This Lead wire is white
for some countries
instead of red.

Red dot mark
Room for Ball bearing 608ZZ
of Gear shaft complete
Wire connecting
portions
Flag receptacles
While facing the wire connecting portions to Motor housing (L) side,
connect Lead wire (red) receptacle to the terminal with Red dot mark
and Lead wire (black) receptacle to the other terminal.
Motor housing
(L) side
Fig. D-2
Fig. D-3
Wiring to DC motor
Wiring in Motor housing L
at least 5 mm
1. Come out at least 5 mm long portion of Power supply cord unit
from the lower edge of Labyrinth figured lead holders.
2. Make sure that Power supply cord unit is fixed in Labyrinth
figured lead holders.
Labyrinth figured
lead holders
Power supply cord unit
(black, white)
DUR141, DUR181
Wiring diagram
P 8/ 10

DUR141, DUR181
Fig. D-4
Wiring in Pipe 25
Coil portion
2. Long sheath of Power supply cord unit
except the coil portion must be tight in
Pipe 25 complete.
3. Be sure to check that Pipe 25 complete
can be smoothly pulled and pushed back.
Pipe 25 complete
1. Insert the long sheath side into Pipe 25 complete as drawn below.
Lead wires for connecting to
Controller in Handle set
Lead wires for connecting to
DC motor in Motor housing
Coil portion
Long sheath
Short
sheath
Wiring diagram
P 9/ 10

While facing the wire connecting portion
to Pipe 25 side, connect the Lead wire
(black) to Terminal. And then, connect Lead
wires (red, yellow) to Terminal.
Fig. D-5
Fig. D-6
Wiring to Terminal
Wiring in Handle (L)
Pipe 25 side Terminal
Handle (L) side
Pass Lead wires (red, yellow) between Terminal
and Switch through the space between Rib A
and Rib B.
Pass Lead wire (yellow) through the space
between Rib A and Rib C.
DUR141, DUR181
Rib A
Rib C
Terminal
Switch
Rib B
Lead wire (red)
Wiring diagram
P 10/ 10
Wire connecting portion
Lead wire
(black)
Lead wire
(Yellow)
Lead wire
(red)
Rib
Power supply cord unit
LED warning lamp
Rib
1. Come out at least 5 mm long portion of
Power supply cord unit from the lower
edge of Labyrinth figured lead holders.
But the sheath end must not go over Rib A.
2. Make sure that Power supply cord unit is
fixed in Labyrinth figured lead holders.
at least
5 mm
Sheath
Put LED warning lamp’s lead wire (red)*on
its lead wire (black) and insert them into
the groove in Handle (L).
*using Lead wire (white) for some countries