Repair

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[4]DISASSEMBLY/ASSEMBLY

[4]-8. Engine (cont.)

DISASSEMBLING

Important: When Intake/ Exhaust valves have to be replaced, remove Cylinder head complete. (Refer to previous page.)

(5)Loosen eleven Hexalobular socket head bolts on the bottom of Crank case (Fig. 58), then remove Crank case from Cylinder block. As Liquid gasket makes Cylinder block stick on Crank case, insert and twist a slotted screwdriver between the clearance. (Fig. 59)

Scrape away Liquid gasket on the mating surface.

(6)Pull out the assembled part of Crank shaft and Piston from Cylinder block. (Fig. 60)

(7)Remove one of Ring spring 12 with a thin slotted screwdriver, then push Piston pin from the opposite with care so as not to damage the other Ring spring 12. (Fig. 61)

The following parts mentioned in Fig. 62 can be replaced individually. When the rest parts have to be replaced, Crankshaft complete is required.

Fig. 58	Fig. 59
	Crank case viewed from the bottom side
M5x16
Hexalobular
socket head
bolt (3 pcs.)

Crank case viewed	M6x30 Hexalobular
from the bottom	socket head bolt (8 pcs.)	Slotted
side		screwdriver
Fig. 60	Fig. 62
		Top ring
		Second ring
		Oil ring
	Cylinder block	Piston
		Piston pin
Fig. 61		Ring spring 12
Piston pin	Ring spring 12	Ring spring 12
Piston pin	Ring spring 12

Woodruff key 4

Oil seal 17 Piston

Insert a thin slotted screwdriver from the depression on the rib around Piston pin hole.

Slotted screwdriver

Cylinder block

Ring spring 12

Oil seal L

Flat washer 41

Crankshaft complete*

*The components cannot be supplied individually.

EK7650H, EK7651H specifications

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