Valve clearance

Inspect at initially 1000 km (600 miles or 2 months) and every 6000 km (4000 miles or 12 months).

• R emove the seat, air cleaner side covers and fuel tank. (Refer to pages 1-12 and 4-2.)

• Drain coolant. (Refer to page 2-10.)

• Remove the radiator. (R efer to page 5-5.)

• Disconnect the left and right water hoses from the cylinder head. (Refer to page 5-6.)

• Remove the thermostat case. (R efer to page 5-6.)

• R emove the left and right ignition coils CD.

• R emove the cylinder head cover.

• R emove the valve timing inspection plug on the clutch cover.

The valve clearance specification is different for both intake and exhaust valves.

Valve clearance adjustment must be checked and adjusted, 1) at the time of periodic inspection, 2) when the valve mecha­ nism is serviced, and 3) when the camshafts are disturbed by removing them for servicing.

Valve clearance: IN. 0.10 - 0.15 mm (0.004 - 0.006 in)

(when cold) EX. 0.15 - 0.20 mm (0.006 - 0.008 in)

NOTE:

* The cam must be at positions, ® or @, in order to check the valve clearance, or to adjust valve clearance. Clearance readings should not be taken with the cam in any other position than these two positions.

* The clearance specification is for COL D state.

* To turn the cranksha ft for clearance checking, be sure to use a 17-mm wrench, and rotate in the normal running direction. All spark plugs should be removed.

For U.S.A. and Canada models

NOTE:

When you clean the air element, drain water from the air cleaner drain hose end by removing the drain plug.

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• Turn crankshaft to bring the notches CD in the right ends of both camshafts (Ex and In) to the positions shown. In this condition, read the valve clearance at the valves © (In and Ex of No. 1 cylinder, Ex of No. 2 and In of No. 3).

• Use a thickness gauge between the adjusting screw and the valve stem end. If the clearance is out of specification, bring it into the specified range by using the special tool.

09900-20803: Thickness gauge

09917-14920: Valve adjust driver

CAUTION:

Both right and left valve clearances should be as closely set as possible.

• Turn the crankshaft 360" (one rotation) to bring the notches CD to the positions shown.

• R ead the clearance at the remaining valves © and adjust the

CD CD

•

• Tighten the head cover bolts to the specified torque. (R efer to page 3-62.)

• Tighten the coolant drain plug securely.

• Pour the specified coolant up to the radiator inlet.