Subaru Robin Power Products EH12-2, EH17-2, EH25-2 manual kgcm, ft4b

5-4-8CYLINDERHEAD

(1)Cleancarbonandgumdepositsfromthevalves,seats,portsandguides.Inspectthevalves,valve seats and valve guides.

(2)Replace valves that are badly burned,pitted or warped.

(3)Wheninstallingthevalves in thecylinderhead, oil thevalvestemsandinsertthemintothevalve guide.

Thenplacethecylinder head on aflat table, installthevalvesprings,springretainers and collet valves.

(4)Valveguidesshould be replacedwhenthevalvestemclearanceexceedsspecifications(See "SERVICE DATA").

Draw the valve guides outand press the new guidesin. Refer to"SERV1CE DATA"for clearance specifications.

After replacing the valves and guides, lap valves in place until a uniform ring shows around the face of the valve. Clean valves and wash cylinderhead thoroughly.

(5)Install cylinder head to cylinder with new head gasket.

Tighten four flange bolts evenlyin three steps by the following tightening torque: Cylinderhead M8 X 65 mmflangebolt - - 4 PCS. (EH12-2,17-2)

M10 X 75 mm flangebolt - 4 pcs. (EH25-2)

Tightening torque(EH12-2,17-2)					Tightening torque(EH25-2)
1st step	2nd step		final step	1st step		2nd step		final step
5 Nom	10	Nom	23-26 N m	9.8	Nom	19.6	Nom	33.3-41.2Nom
50 k g w n	100	kgcm	230-270 kgcm	100	kgecrn	200	kgcm	340-420 kg-cm
3.6 ft-lb	7.2 ft-lb		17-30 ft-lb	7.2 ft-lb		14.5	ft4b	24.6-30.4ft*lb

54 - 9 ROCKER ARMS AND PUSH RODS

(1)Insert push rods into crankcase.

Put push rod tip in the hollow of tappet top.

(2)Apply oil to the rocker arms and assemblethem to the cylinder head using pivot bolt and guide plate.

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5-4-10VALVE CLEARANCEADJUSTMENT

(1) Positionthepistonatthetopdeadcenter of thecompressionstroke.The topdeadcentermaybe obtained by placing the key sloton the power take off shaft to :

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12o'clock

EH12-2B,17-2B,25-2D

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10o'clock

EH12-2D,17-2D,25-2B

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