Makita EX2650LH User Manual
T
ECHNICAL INFORMATION
PRODUCT
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Models No.
Description
EX2650LH
Multi Function Power Head
CONCEPT AND MAIN APPLICATIONS
Model EX2650LH loaded with 25.4mL Makita 4-stroke engine is
a power head designed for versatile garden and agricultural applications.
The following advantages make this product ideal for a wide range
of garden and agricultural applications:
• Split system of Power head and Attachment provides easier mobility.
• Clean 4-stroke engine equipped with our unique multi-position
engine lubrication system that enables the engine to be inclined
to any angle with no emission of white smoke and smell of
burning engine oil even during continuous operation
• Multi-tool system consisting of the power head and versatile
optional attachments
Specification
Type
Displacement: cm³ (cu.in.)
Engine
Engine oil
Carburetor
Starting system
Fuel tank capacity: mL (US oz)
Primer pump Yes
Clutch Yes
Handle style
Rapid start
Net weight*
*2: Brazil: 25E gasoline
*3: However, equipped with mechanical decompression
*4: Dry weight
Fuel
Max. output: kW
Max. torque: N.m
4: kg (lbs)
Straight unleaded gasoline*
0.77 (at 7,000 min.ˉ¹)
1.1 (at 5,500 min.
SAE10W-30 oil
in the class SF or higher of API Classification
Recoil starter, with mechanical decompression
4-stroke
25.4 (1.55)
Diaphragm
600 (20.3)
Loop handle
No*
3
4.6 (10)
H
L
Dimensions: mm (")
Length (L)
Width (W)
Height (H)
*1: for the countries where Barrier bar
is required by the standards of
brushcutter.
2
ˉ¹)
975 (38-3/8)
242 (9-1/2)
323 (12-3/4)*
241 (9-1/2)
W
1
Standard equipment
Shoulder harness with single shoulder strap
Socket wrench 16-17 ................................................................................. 1
Hex wrench 4 .............................................................................................. 1
Accessory bag ............................................................................................ 1
Oil set (oil bottle containing 80mL engine oil) ......................................... 1
Note: The standard equipment for the tool shown above may vary by country.
.............................................. 1
Optional accessories
Brush cutter attachment
String trimmer attachment
Pole saw attachment
Pole hedge trimmer attachment
Cultivator attachment
Coffee harvester attachment
Carrying bag
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Repair
CAUTION: Repair the machine in accordance with “Instruction manual” or “Safety instructions”.
[1] NECESSARY REPAIRING TOOLS
Code No. Description Use for
1R004
1R006
1R031
1R033
1R127
1R171
1R282
1R286
Retaining ring pliers ST-2 for External ring removing/ assembling Retaining ring S-12
removing/ assembling Retaining ring R-24Retaining ring pliers RT-2E for Internal ring
pressfitting Spiral bevel gear 14 (the component of Cutter shaft set) Bearing setting pipe 20-12.21R028
Bearing setting pipe 28-20.2 removing Spiral bevel gear 14 (the component of Cutter shaft set)
removing Cutter shaft setBearing setting plate 10.2
removing Ball bearing 6001LLUGear extractor (large)1R045
Air density tester diagnosing Carburetor
removing / assembling M5 Hex socket head boltT-type hex. wrench 4-130
removing Clutch drumRound bar for arbor 20-1001R247
Round bar for arbor 8-50 removing Spiral bevel gear 14 (the component of Cutter shaft set)
pressfitting Clutch drumRound bar for arbor 12-50
removing / assembling Retaining ringsRetaining ring S and R pliers1R291
removing FlywheelFlywheel puller1R364
Feeler gauge set1R366
Wire brush
M10-17 Hex. nut removing Cutter shaft set
Adjusting Ignition coil, Spark plug and Rocker arm assembly
removing / assembling FlywheelHex socket bit 13
making Spark plug clean
[2] HANDLING OF GASKET
When Gasket is removed:
(1) clear something that is sticking on the matching portions with Gasket.
(2) replace Gasket with the new one.
[3] LUBRICANT / ADHESIVE APPLICATION
Apply a little amount of Makita grease N No.2 to Spiral spring in Recoil starter and the spline ends of Shaft.
Apply 8g Makita grease N No.2 into Gear case after cleaning the inside.
Once the engine is diassembled, put ThreeBond 1216 to the matching surface of Crank case and Cylinder block for
the reassembly. (Fig. 64)
[4] DISASSEMBLY/ASSEMBLY
[4]-1. Warning
Obey the following instructions in advance before repairing.
• Wear gloves.
• Keep the cover on the blade other than a trial of engine running.
• Cool down engine enough, as the engine just after used may cause you to get burned.
• Remove the remaining fuel in Tank and Carburetor completely.
• Repair the engine on the stable workbench and in the clean workplace to prevent dust and debris from entering.
• Record where and how the parts are assembled, and what are the parts. Do not reassemble them wrongly.
It is recommended to prepare the several kind of boxes to keep parts group by group.
• Treat the disassembled parts carefully. Clean and wash them certainly.
• When some bolts and screws are difficult to loosen, use Impact driver.
• Tighten the bolts and the screws to the specific torque as shown in Fig. 68.
• Once the main parts are assembled, check every move and sound by manually turning each part.
• Check the assembled parts by turning them manually if there is any unusual gap or sound around.
Repair
[4] DISASSEMBLY/ASSEMBLY
[4]-2. Engine and Shaft
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DISASSEMBLING
(1) Disconnect lead wire and grounding wire by removing each connector
after removal of Air cleaner cover. (Fig. 1)
(2) Remove Control cable from Insulator as follows:
• Loosen the nuts of Control cable so as to relax the holding to the hook of
Insulator. (Fig. 2)
• Disconnect Inner cable from Swivel of Carburetor.
(3) Loosen two M5x18 Hex socket head bolts on Pipe holder and remove M5x12
Hex socket head bolt. (Fig. 3)
(4) Pull Shaft pipe B complete and Shaft B complete out of Engine. (Fig. 4)
Note: Shaft B complete in the Shaft B pipe complete may get stuck
at the spline engagement. If yes, use Waterpump pliers to pull out
the shaft. (Fig. 5)
Fig. 3
Fig. 4 Fig. 5
Fig. 2
Nut of Control cable
(2 pcs.)
Fig. 1
Connector (4pcs.)
Swivel
Inner cable of
Control cable
Hook of Insulator for Control cable
Engine Waterpump pliers
M5x12 Hex
socket head
bolt
M5x18 Hex
socket head bolt (2pcs.)
ASSEMBLING
Assemble by reversing the disassembly procedure.
• Set Control cable in place. (Figs. 2 and 6)
- Secure it on the hook of Insulator with two Nuts of Control cable.
- Fit Inner cable end into the groove of Swivel of Carburetor.
Note: Adjust the tension of the cable to allow the play 1mm up to 2mm.
Fig. 6
Pipe holder
Inner cable end
Nuts to fix on
the hook of Insulator
Shaft pipe B complete
Shaft B complete
Shaft B complete
Hook of Insulator
for Control cable
Control cable
Repair
[4] DISASSEMBLY/ASSEMBLY
[4]-3. Brushcutter attachment
DISASSEMBLING
(1) Loosen two M6x30 Hex. socket head bolts and remove Protector with Protector
extension attached. (Fig. 7)
(2) While pulling the side walls of Protector cover toward outside, remove Protector cover
from Shaft pipe A complete. (Fig. 8)
(3) Remove two M5x14 Hex socket head bolts and Protector clamp. (Fig. 9)
(4) Loosen M5x25 Hex socket head bolt and remove Gear case assembly from Shaft pipe
A complete. (Fig. 9)
(5) Pull Shaft A from Gear case installation side and then remove Retaining ring S-7 from
Shaft A. (Fig. 10)
(6) Push the projection of Leaf spring complete deeply and remove it from the hole of
Shaft pipe A complete. Slip the projection along the inside of Shaft pipe A complete
toward the shaft end. (Fig. 11) Leaf spring complete is removed from Shaft pipe A
complete.
Note: Pushing the projection hard causes the deformation of Leaf spring complete. Be careful of the handling.
Fig. 7
M6x30 Hex socket
head bolt (2pcs.)Protector
Protector
extension
P 4/ 14
Fig. 8
M5x14 Hex socket
head bolt
Side wall
of Protector
cover
Protector cover
ASSEMBLING
Assemble by reversing the disassembly procedure.
Fig. 9
Shaft pipe A completeShaft pipe A complete
M5x14 Hex
socket head
bolt (2 pcs.)
[4]-4. String trimmer attachment
DISASSEMBLING
(1) Remove two M6x20 Hex. socket head bolts and Protector
from Clamp complete. (Fig. 12)
(2) Remove M5x10 Hex socket head bolt and Clamp complete
from Head case. (Fig. 12)
(3) Loosen M5x25 Hex socket head bolt and remove Head case
from Bent pipe assembly. (Fig. 12)
(4) Remove Bearing washer from Head case installation side of
Bent pipe assembly. (Fig. 13)
Remove Flexible shaft from Bent pipe assembly by pulling it
off from shaft joint side.
(5) Remove two M5x14 Screws. Cutter is removed from Safety
cover as drawn in Fig. 14.
M5x25 Hex
socket head
bolt
Gear case
assembly
Protector
clamp
Fig. 12
Bent pipe assembly
M5x25 Hex
socket head
bolt
Fig. 14
M5x14 Screw (2 pcs.)
Fig. 10
Shaft pipe A complete viewed
from Gear case installation side
Retaining
ring S-7
Shaft A
Fig. 11
Projection of Leaf
spring complete
Spring portion of
Leaf spring complete
M5x10 Hex socket
head bolt
M6x20 Hex socket
head bolt (2 pcs.)
Clamp complete
Head case complete
Protector
Fig. 13
Bent pipe assembly viewed
from Head case side
M5 Washer
(2 pcs.)
M5 Spring washer
(2 pcs.)
M5 Nut
Bearing washerFlexible shaft
Safety cover
Cutter
(2 pcs.)
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Repair
[4] DISASSEMBLY/ASSEMBLY
[4]-5. Gear case assembly
DISASSEMBLING
(1) According to the clause of [4]-3, Remove Gear case assembly. (Refer to Figs. 7, 8 and 9)
(2) Remove M8x10 + Hex bolt that is the stopper of Grease inlet on Gear case set. (Fig. 15)
(3) Remove Retaining ring R-24 with 1R006. (Fig. 16)
(4) Remove an assembled part of Spiral bevel gear 14, Ball bearing 609ZZ and Retaining ring S-9 by striking Gear case
assembly against workbench as drawn in Fig. 17.
(5) Remove Retaining ring S-9 with 1R291.
(6) Receive Ball bearing 609ZZ with 1R031, then press down the top of Spiral bevel gear 14 using 1R282 with Arbor press
(Fig. 18) Refer to Fig. 19 for the components.
(7) Remove Retaining ring R-28 with 1R291. (Fig. 20)
(8) Preset Receive washer and 1R033 with M10-17 Hex. nut to Cutter shaft as drawn in Fig. 21, and give the impacts
using the plastic hammer. An assembled part of Cutter shaft complete, Ball bearing 6001LLU is removed.
Refer to Fig. 22 for the components.
(9) Remove Ball bearing 6001LLU with 1R045.
Fig. 15
M8x10 + Hex bolt
Fig. 16
Retaining ring R-24
Fig. 19 Fig. 20
Spiral bevel gear 14
(The component of Cutter shaft set)
Ball bearing 609ZZ
Retaining ring S-9
Retaining ring R-24
Fig. 21 Fig. 22
1R033Receive
washer
Gear case
M10-17 Hex. nut
Fig. 17 Fig. 18
Ball bearing 609ZZ
Workbench
M8x10 + Hex bolt
Cutter shaft set
(Note: Spiral bevel bear 14 shown in Fig. 17 is also
the component.)
Ball bearing 6001LLU
1R282
1R031
Retaining ring
S-28
ASSEMBLING
Assemble by reversing the disassembly procedure.
• Receive Gear case assembly with the U-shape table of Arbor press,
then press down Ball bearing 6001LLU using 1R028 with Arbor
press to insert Cutter shaft set in place. (Fig. 23)
Retaining ring R-28
Fig. 23
Ball bearing 6001LLU
1R028
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