Chapter 8 – Cylinder and Piston
Service Manual AJP PR3/PR4 8 - 1
SERVICE INFORMATION
GENERAL
This section covers the removal and
installation of the cylinder and piston with the
engine removed out of the frame.
Gaskets and sealing segments used to
prevent oil leakage and ensure the correct
operation of the engine should always be
replaced.
! WARNING !
Working in a location with adequate
ventilation. Smoke or allow flames or sparks
in the workplace or where gasoline is stored
can cause a fire or explosion.
Be careful, to perform all these operations to
avoid damaging the contact faces (the upper
and lower faces of the cylinder) and the
cylinder wall and the piston. Also be careful
when removing components to not apply too
much strength on them.
All mentioned components after being
removed should be cleaned and dried for later
inspection.
Since the lubrication of the camshaft and the
rocker arms is made from the oil pump
through internal passages from the base of
the crankcase by the cylinder to reach the
cylinder head, these conduits and internal
holes must be thoroughly clean and
unobstructed before making the cylinder
assembly.
SERVICE INFORMATION
8 – 1
INSPECTION OF COMPONENTS
8 – 5
TROUBLESHOOTING
8 – 2
CYLINDER AND PISTON
INSTALLATION
8 – 8
SPECIFICATIONS
8 – 3
ASSEMBLY SCHEME
8 – 12
CYLINDER AND PISTON
REMOVAL
8 – 4