APRILIA TUONO V4 R 2010 Service Station Manual page 304

Engine
020851Y Camshaft timing pin
020852Y Crankshaft timing pin
Valves
Valve removal
•
Remove the head.
•
Place the head on supporting surface.
•
Number the valves and their bucket tappets in order to position them correctly upon refitting.
•
Remove the bucket tappets and the
adjustment shims using a magnet.
•
Compress the valve springs with the
specific wrench and with the spring
compressing tool.
Specific tooling
AP8140179 Valve spring compressor
020853Y Intake valve spring compressor
020854Y Exhaust valve spring compressor
See also
Front head removal
Rear head removal
ENG - 304
TUONO V4 R