Makita EX2650LH User Manual

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*

4.6 (10)

Dimensions: mm (")

Length (L)

Width (W)

Height (H)

*1: for the countries where Barrier bar is required by the standards of brushcutter.

ˉ¹)

975 (38-3/8)

242 (9-1/2)

323 (12-3/4)*

241 (9-1/2)

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

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

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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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