P 2/ 19

Repair

CAUTION: Repair the machine in accordance with “Instruction manual” or “Safety instructions”.

Warning: Follow the instructions described below in advance before repairing:

Wear gloves.

Remove the cutting tool from the unit.

When the engine is hot from use, cool down the engine enough or you can get burned.

Remove remaining fuel from Fuel tank and Carburetor completely. [FLAMMABLE MATERIAL KEEP FIRE AWAY]

Remove Spark plug cap from Spark plug.

Repair the engine on a stable workbench and in a clean workplace kept as free of dust and debris as possible.

In order to avoid wrong reassembly, draw or write down where and how the parts are assembled, and what are the parts. It is also recommended to have boxes ready to keep disassembled parts by group.

Handle the disassembled parts carefully. Clean and wash them properly.

If some bolts and screws are too tight, use Impact driver.

Tighten the bolts and the screws to the specified torque as shown in "[5] Tightening torque specifications".

Each time after you mounted a main part of the engine such as the piston, check if it moves smoothly

without abnormal noise by manually turning the crankshaft.

After completion of reassembly, check for loose parts or abnormal noise and vibration by manually turning the crankshaft.

[1] NECESSARY REPAIRING TOOLS

 

Code No.

Description

Use for

 

 

1R003

Retaining ring pliers ST-2N for External ring

removing Lock off lever

 

 

1R005

Retaining ring pliers RT-2N for Internal ring

removing Cotter

 

 

 

 

 

 

 

1R030

Bearing setting pipe 25-17.2

press-fitting Ball bearing 6203LLU into Cutting device

 

 

 

 

 

 

 

1R223

Torque wrench shaft 20-90N·m

assembling Clutch complete to Crankshaft

 

 

1R224

Ratchet head 12.7 (for 1R223)

 

 

 

 

 

 

 

 

 

 

1R288

Screwdriver magnetizer

removing/ assembling Cotter

 

 

1R290

Hexalobular bit VT-27 (6.35mm)

removing/ assembling Hexalobular bolt

 

 

1R291

Retaining ring S and R pliers

removing/ installing Retaining ring R-40

 

 

1R308

Spring pin extractor 4.0

removing Pin 5 from Rocker arm assembly

 

 

 

 

 

 

 

1R311

Retaining ring pliers

removing Tubes

 

 

1R364

Flywheel puller

removing Flywheel

 

 

 

 

 

 

 

1R366

Feeler gauge set

adjusting the gap between Ignition coil and Flywheel,

 

 

Rocker arm assembly and Valve section, Spark plug

 

 

 

 

 

 

1R372

Crank shaft lock bolt M10

holding the position of Piston/ preventing Crankshaft from

 

 

being rotated

 

 

 

 

 

 

1R389

Cotter removal attachment

removing Exhaust / Intake valve system

 

 

 

 

 

 

 

---

Socket/ Socket bit 17

removing/ installing Clutch

 

 

 

 

 

 

 

---

Socket/ Socket bit 24

removing/ installing Clutch

 

 

---

Wire brush

cleaning Spark plug

 

 

 

 

 

 

 

---

Hex wrench 2.5

assembling/ removing / adjusting M5 Hex socket head bolt

 

 

---

Wrench 8

holding M5x9 Hex nut

 

 

 

 

 

 

[2] GASKET

Once Gasket is removed:

(1)Clean up the mating surface where the gasket was installed to maintain its sealing performance.

(2)Replace it with a new one.

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Makita EK7651H, EK7650H dimensions Necessary Repairing Tools

EK7650H, EK7651H specifications

The Makita EK7650H and EK7651H are robust and powerful cut-off saws designed for professional contractors and construction workers. These models are ideal for cutting through concrete, masonry, asphalt, and other tough materials with precision and efficiency. Their advanced engineering and innovative features set them apart in the competitive landscape of power tools.

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Both models come with an adjustable cutting depth feature, enabling users to achieve precise cuts for various materials. The easy-to-access air filter and fuel system ensure simple maintenance, extending the life of the saws.

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