Makita 3709 Owner's manual

Model No.
Description
PRODUCT
CONCEPT AND MAIN APPLICATIONS
Specification
Standard equipment
Note: The standard equipment for the tool shown above may differ by country.
P 1 / 4
3709, 3710
Trimmer
Models 3709 and 3710 have been developed as price-competitive
successors to the current Model 3703 (with normal base) and
3704 (with tilt base).
Their main features are;
*Transparent plastic base for clear view to trimming edge
*Rubberized soft grip for operator's comfort and control
3710 additionally features 0-45 degree tilt base.
Dimensions: mm (")
Width (W)
Height (H)
Length (L)
Model No. 3709 3710
82 (3-1/4)
90 (3-1/2)
199 (7-7/8)
102 (4)
122 (4-13/16)
302 (11-7/8)
Model No. 3709 3710
Double insulation
Net weight: Kg (lbs)
Power supply cord: m (ft)
Continuous rating input: W
Depth adjustment mechanism
Collet size: mm (")
No load speed: min-1=rpm
530
30,000
6 or 6.35(1/4)
Rack and pinion
Yes
YesNo
Australia, New Zealand: 2.0(6.6), Other countries: 2.5(8.2)
1.5 (3.3) 1.6 (3.5)
Tilt base
Trimmer guide assembly .............. 1 pc
Straight guide assembly ............... 1 pc
Templet guide 10 .......................... 1 pc
Wrench 17.............................1 pc
Chip deflector (3709 only) ...1 pc
Straight bit (6mm or 1/4 inch).. 1 pc
Collet cone (6mm or 1/4 inch).. 1 pc
Wrench 10 ................................ 1 pc
W
H
Model 3709
Model 3710
Continuous Rating (W)
Voltage (V) Cycle (Hz) Input Output Max. Output (W)
120
110 5.1 530
---
300 57050/ 60
2.5 530 300 57050/ 60
2.4 530 300 57050/ 60
2.3 530 300 57050/ 60
4.0 170 57050/ 60
220
230
240
Current (A)
TECHNICAL INFORMATION
L
H
WL
Optional accessories
Assorted bits
Trimmer shoe
Trimmer base assembly
Collet cone

P 2 / 4
1. Remove Brush holder caps, Carbon brushes, Collet cone, Collet nut and Trimmer base ass'y set as shown in Fig.1.
2. Remove four 4x35 Tapping screws. Next, separate the assembled part of Motor housing complete and Armature ass'y
from the others. Refer to Fig.2.
3. Pull out Armature ass'y from Motor housing complete by hand as illustrated in Fig.3.
4. Remove Ball bearing 6002LLH on the drive end of Armature ass'y and Ball bearing 607LLB on the commutator end
in according to the following manner.
A) Pull off Rubber ring 19 on Ball bearing 607LLB by hand.
B) Insert two jaws of 1R269 between Ball bearing 607LLB and Resin washer to remove Ball bearing 607LLB
as described in Fig.4.
C) As illustrated in Fig.5, use 1R280 with 1R269 to remove Ball bearing 6002LLH.
[2] Disassembling Armature
Fig.1 Fig.2
Fig.5
[1] NECESSARY REPAIRING TOOLS
Fig.3 Fig.4
CAUTION: Be sure to unplug the tool and remove the bit before maintenance or repair.
See the instruction manual on how to handle the tool.
Part No. Descriptions Purpose
1R269 Bearing Extractor For removing Ball bearings on Armature shaft
1R280 Round Bar for Arbor 6-50 For use it together with 1R269
Brush Holder
Cap
Trimmer base
assembly set
Collet Nut
Collet Cone
Carbon Brush
Motor Housing
Complete
Armature ass'y
Tapping screw 4x65: 4pcs.
Ball Bearing 607LLB
Resin washer Ball Bearing
6002LLH
1R280
Round Bar
for Arbor 6-50
1R269 Bearing Extractor
Repair
Carbon Brush
Brush Holder Cap

P 3 / 4
Repair
[3] Assembling Armature
Fig.7.
Fig..9
Fig.8.
Wave Washer 23
View from A (Fig.6)
Wave washer 23
should be put in
the bearing room
of Motor housing
complete.
Motor Housing
Complete
Be sure to put wave washer 23 into place in Motor housing complete as Fig.7 and Fig.8 before fixing Armature ass'y
to Motor housing complete.
Refer to Fig.9.
Circuit diagram
Color index of lead wires' sheath
Black
White
Power supply cord
Terminal Block
Noise Suppressor
Field
Switch
Terminal Block is not used in the machine
for some countries.
Noise suppressor is not used in the machine for
some countries.

Wiring diagram
P 4 / 4
Fig.10.
Fig.11.
Switch
Noise Suppressor
Terminal Block is not used in the machine for
some countries.
Lead Wire of
Power Supply Cord
Terminal Block
Noise suppressor is not used in the machine for
some countries.
Put field lead wire (white) into lead wire holder as Fig.10.
1. Put one of lead wire of Power supply cord into lead wire holder.
2. Put one of lead wire (white) of Noise suppressor into lead wire holder.
See Fig.11.
Wiring of Field Lead Wires (Before Mounting Electrical Parts)
Wiring of Field Lead Wires (After Mounting Electrical Parts)
Cord Clamp
Power Supply
Cord
Field Lead Wire
(black)
Field Lead Wire
(white)
to Switch
to Terminal Block
Noise Suppressor's
Lead Wire (white)
Lead Wire Holder