RP 3/ 19

epair

[3] LUBRICANT/ ADHESIVE APPLICATION

Apply the following grease/ oil to protect parts and product from unusual abrasion.

Note: After assembly, supply 220cc of 4-cycle engine oil from the inlet of machine before trial run.

When disassembling the engine, put ThreeBond 1215 to the matching surface of Crank case and Cylinder block. (Fig. 66)

Item No.

Description

Use for

Lubricant

Amount

109

Retainer (2 pcs.)

Contact surface with 119 and 120

 

 

112

Pin 5

Contact surface with the holes of Cylinder head assembly

 

 

117Push rod (2 pcs.) Contact surface with the holes of Rocker arm assembly

119

Exhaust valve

Contact surface with the inner periphery of Valve guide

 

 

120

Intake valve

4-cycle Engine oil

a little

 

 

 

 

(API grade SM class)

123

Cylinder block

Contact surface with Piston

 

complete

 

 

 

 

 

 

133

Cam lifter L

• Contact surface with Push rod

 

 

134Cam lifter R • Contact surface with Cam gear complete

138

Oil seal 17

Inner periphery

Makita grease N No. 2

a little

140

Crankshaft

• Steel balls in Ball bearings 6204LU and 6204

4-cycle Engine oil

a little

• Hole of Connection rod to pass Piston pin in Piston

complete

(API grade SM class)

 

• Needle cage in the other hole of Connection rod

 

 

 

 

 

185

Oil seal L

Inner periphery

Makita grease N No. 2

a little

208

Spiral spring

Entire surface

 

 

Fig. 1

 

109

 

 

 

 

 

 

 

 

112

Valve

 

 

 

 

 

 

guide

 

 

 

117

 

 

 

Cylinder head

 

 

 

complete

 

 

 

119

123

Cylinder block complete

 

120

 

 

 

(It consists of Cylinder block

 

 

 

and Crankcase)

 

 

Cylinder block

133

134

Starter assembly

140

Connecting

185

 

 

rod

Ball bearing

 

 

138

 

6204

 

Ball bearing

208

 

6204LU

 

Crankcase

Page 3
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Makita EK7650H, EK7651H dimensions Epair, LUBRICANT/ Adhesive Application

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.

One of the standout features of both models is the 4-stroke engine technology, which provides a significant reduction in emissions and noise compared to traditional 2-stroke engines. This makes them environmentally friendly while also allowing for longer operating times without the need for frequent fuel refills. The powerful 6.6 HP engine delivers exceptional cutting performance, enabling users to tackle even the most challenging jobs.

The EK7650H and EK7651H are equipped with a “Fast Start” technology that allows for easy starting, reducing the effort required to get the saw up and running. This is especially useful for users who need to work quickly and efficiently on-site. Additionally, the saws feature an automatic choke that enhances starting reliability in various weather conditions.

Comfort and usability are central to the design of these models. The dual anti-vibration technology minimizes vibrations during operation, significantly reducing user fatigue. The ergonomic handle provides a secure grip, allowing for greater control during cutting tasks. This is particularly beneficial for prolonged use in demanding work environments.

Another key characteristic of the Makita EK7650H and EK7651H is their versatility. They are designed to accommodate various blade sizes, which gives users flexibility in choosing the right blade for specific applications. The saws also feature an integrated dust management system that helps keep the work area clean, enhancing visibility and safety.

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.

In summary, the Makita EK7650H and EK7651H are powerful, efficient, and user-friendly cut-off saws that cater to the needs of professional users. With their advanced features, including a 4-stroke engine, ergonomic design, and versatility in blade sizes, these saws are indispensable tools for anyone looking to perform cutting tasks with precision and ease.