Installing The Valves And Valve Springs - APRILIA STRADA 660 Service Manual

MY 660
3.3.5.

INSTALLING THE VALVES AND VALVE SPRINGS

NOTE The following procedure applies to all valves and their
components.
•
Deburr the valve stem ends.
•
Lubricate the valve stem and the valve stem oil seal
with oil, see (LUBRICANT TABLE).
•
Install the valve.
•
Install the valve spring seat (1) and seal ring (2).
NOTE Lubricate the oil seal before installing, see
(LUBRICANT TABLE). Apply an emulsified solution on the
oil seal outer diameter to help installation, see (LUBRICANT
TABLE).
• Install the valve spring.
NOTE Install the valve spring end with bigger pitch upward.
Install the spring with coloured end up.
ENGINE
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