Checking The Clutch Hub - APRILIA RS4 125 Service Station Manual

Engine
Check the primary driven gear for damage and
wear and, if necessary, replace the primary driven
gear and the clutch bell all together.
Make sure there is not excessive noise during op-
eration; if necessary, replace the primary drive
gear and the clutch bell all together.
•
Check the worn guiding grooves of the
clutch bell (1); max. insertion depth (A)
= 0.5 mm (0.020 in).

Checking the clutch hub

•
When the clutch hub is worn it can cre-
ate problems with sliding of the hous-
ing. The hub should be replaced if the
surface of the spring has exceeded the
wear limits. Max. wear limit (A) 0.3 mm
(0.012 in).
Check the clutch hub for damage and wear that
may result in clutch irregular operation. If neces-
sary, replace the hub.
ENG - 154
RS4 125