PIAGGIO 633929(IT), Service Station Manual, Page: 124 / 314

Removing the cylinder head
- Remove the spark plug.
- Remove the 2 side fixings shown in the figure.
- Loosen the 4 head-cylinder fastening nuts in two
or three stages and in criss-cross fashion.
- Remove the head, the two centring dowels and
the gasket.
N.B.
IN CASE OF NEED, THE HEAD MAY BE RE-
MOVED WITH THE CAMSHAFT, PINS, ROCK-
ING LEVERS AND FIXING BRACKET. THE
HEAD CAN ALSO BE REMOVED WITHOUT RE-
MOVING THE CHAIN AND THE DRIVING
SHAFT CHAIN TIGHTENER.
Removing the valves
- Using the appropriate tool fitted with an adapter,
remove the cotter pins, plates, springs and valves.
- Remove the oil guards with the appropriate tool.
- Remove the lower spring supports.
CAUTION
REPLACE THE VALVES IN SUCH A WAY AS
TO RECOGNISE THEIR ORIGINAL POSITION
ON THE HEAD.
Specific tooling
020382Y011 adapter for valve removal tool
020382Y Valve cotters equipped with part 012
removal tool
020306Y Punch for assembling valve seal
rings
Removing the cylinder - piston assy.
- Remove the chain guide pad.
- Pull out the cylinder.
- Remove the cylinder base gasket.
- Remove the two stop rings, the wrist pin and the piston.
- Remove the piston seals.
Engine
MP3 125
ENG - 30