Makita EK7650H, EK7651H dimensions P 7, 4DISASSEMBLY/ASSEMBLY 4-3.Clutch, Ratchet, Repair

P 7/ 19

Repair

[4]DISASSEMBLY/ASSEMBLY

[4]-3. Clutch, Ratchet

DISASSEMBLING

(1)Remove Cutting device. Refer to the clause of [4]-1.

(2)Loosen three M5x12 Hexalobular socket head bolts, then remove Clutch cover together with Starter assembly. (Fig. 16)

(3)Loosen three M5x16 Hexalobular socket head bolts with 1R290 and Cordless impact driver, and remove Ratchet complete. (Fig. 17)

(4)Remove M10-17 Hex lock nut by turning it counterclockwise by using Cordless impact driver with Socket bit.

(5)Turn the hexagonal portion of Clutch holder clockwise by using Cordless impact driver with Socket bit.

Clutch complete is removed.

Note: Clutch holder has a left hand thread.

(6)Remove Clutch drum assembly by hand. No tools are required. Remove Retaining ring R-35 from Clutch drum with 1R005. Press down Ball bearing 6003LLU in Clutch drum.

Fig. 16

Clutch cover

Starter assembly

U-shaped notch of Reel

M5x12 Hexalobular socket head bolt (3 pcs.)

Fig. 17	Fig. 18	Fig. 19
Ratchet complete	M10-17	Hexagonal
	Hex lock	portion (M16-24)
	nut	of Clutch holder

	M5x16 Hexalobular	17mm flats width		24mm flats width
	socket head bolt (3 pcs.)	Socket bit		Socket bit
ASSEMBLING
(1)	Put Spacer 17 and Clutch drum assembly to Crankshaft, then put		Fig. 20
	the other Spacer 17 on Clutch drum assembly. (Fig. 20)		Crankshaft
(2)	Remove Spark plug and assemble 1R372 carefully to Cylinder		Spacer 17
	block by hand to prevents Crankshaft from being rotated. (Fig. 21)
			Clutch drum
(3)	Turn Flywheel slowly and carefully by hand until the top of
	1R372 contacts Piston.		assembly
	Note: Do not damage Piston.		Spacer 17
(4)	Turn the hexagonal portion of Clutch holder counterclockwise
	with 1R223, 1R224 and 17mm flat width Socket in order to
	tighten Clutch complete to the fastening torque 38N.m. (Fig. 20)
	Note: • Do not use Cordless impact driver.			Clutch complete
	• Do not turn the hexagonal portion with 1R372 taken			24mm flats width Socket
	apart from Piston.
				(Square drive: 12.7mm)
(5)	Assemble M10-17 Hex lock nut to Crankshaft by reversing
	the disassembling procedure shown in Fig. 18.		1R224 1R223
(6)	Set Ratchet complete and three M5x16 Hexalobular socket head
	bolts in place by reversing the disassembling procedure shown in		Fig. 21
	Fig. 17.		Cylinder block
(7)	Assemble the rest in accordance with the clause of [4]-1.
			1R372
				Piston