Makita EK7651H, EK7650H dimensions Flywheel, Ignition coil, Disassembling Flywheel Complete

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Repair

 

[4] DISASSEMBLY/ASSEMBLY

 

[4]-4. Flywheel, Ignition coil

Fig. 22

 

DISASSEMBLING FLYWHEEL COMPLETE

(1)Loosen four M5x30 - Hexalobular socket head bolts, then remove Fan cover. (Fig. 22)

(2)Remove M10 Flange nut from Crankshaft by turning counterclockwise

by using Cordless impact driver with 14mm flats width Socket bit. (Fig. 23)

(3) Mount 1R364 on Flywheel complete, then put Screwdriver through the center shaft of IR364. (Fig. 24)

(4)While holding the one of M6 bolts and center bolt with Water pump pliers to prevent 1R364 from being rotated, turn Screwdriver clockwise.

When Flywheel is removed from Crankshaft, a snap sound is heard because of their tapered fit.

Fig. 23

Fig. 24

 

Center bolt of 1R364

 

14mm flats width

 

Socket bit

M10 Flange nut

Crankshaft

 

Flywheel

Screwdriver

 

Fig. 25

ASSEMBLING FLYWHEEL COMPLETE

 

M5x30 - Hexalobular socket head bolt (4 pcs.)

M6 bolt of 1R364

Water pump pliers

(1)Remove grease from Crankshaft complete.

(2)After aligning the key slot of Flywheel complete with Woodruff key in the keyway of Crankshaft complete, mount Flywheel complete onto Crankshaft complete. (Fig. 25)

(3)Assemble the rest by reversing the disassembly procedure.

Woodruff key in key way of Crankshaft complete

Key slot of

Flywheel complete

ADJUSTMENT THE GAP BETWEEN IGNITION COIL AND FLYWHEEL

 

0.3 up to 0.4mm is the proper gap between Ignition coil and Flywheel.

Fig. 26

 

M5x16 Hexalobular socket head bolt

Refer to Fig. 26 and the following steps.

(1) Loosen two M5x16 Hexalobular socket head bolts on Ignition coil.

1

(2 pcs.)

(2) Insert 0.3mm leaf of 1R366 between Ignition coil and the magnet of

 

Flywheel complete.

2

 

Ignition coil will be attracted to the magnet through the Feeler gauge.

0.3 up to

Then, without removing the Feeler gauge, fasten Ignition coil to

 

0.4mm

the engine with two M5x16 Hexalobular socket head bolts.

 

 

First tighten 1 , the next, tighten 2 . The order is easy to keep

 

 

the proper gap.

 

 

(2) Remove 1R366. Then make sure that Flywheel complete does not

 

 

touch Ignition coil by turning it by hand.

 

0.3mm leaf of 1R366

 

 

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Contents Standard equipment SpecificationOptional accessories Necessary Repairing Tools RepairEpair LUBRICANT/ Adhesive ApplicationBelt 5-800, Cutting device DisassemblingAssembling Starter assembly Clutch, Ratchet Disassembling Flywheel Complete Adjustment the GAP Between Ignition Coil and FlywheelFlywheel, Ignition coil Disassembling Ignition Coil Carburetor Adjustment of Carburetor After Replacement Throttle lever Engine blockDISASSEMBLY/ASSEMBLY 4-7. Engine block Engine Arm has to be close to Repair Oil ring Assembling Engine BlockDISASSEMBLY/ASSEMBLY 4-8. Engine Lead unitChecking Spark Plug Tightening torque specificationsIgnition system

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.

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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.

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.
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