APRILIA MXV 450 - Owner's Manual download pdf (Page 79)

LUBRICATION

3-41

ine 450 - 550

3.3.5. INSTALLING THE VALVES AND VALVE SPRINGS

NOTE The following procedure applies to all valves and their

components.

• Lubricate the valve stem and the valve stem oil seal

with oil, see (LUBRICANT TABLE).

• Install the valve, lower cap (4), and valve stem oil seal

(3).

• Install valve spring (6) and upper cap (5).

NOTE Install the valve spring end with bigger pitch upward.

Install spring with coloured end (red for exhaust, white for

intake) facing down.

• Install the valve spring retainer.

• Compress the spring with suitable tool (no. 9100838)

and install valve collets using adapter (no. 8140179).

• Lightly tap with a mallet onto valve tip to secure valve

collets to valve stem.

WARNING

Do not tap excessively hard on the valve or it

might damage.

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APRILIA MXV 450 - Owner's Manual Page 79