Chapter 7 – Cylinder head and valves
Manual de Oficina AJP PR3/PR4 (2015) 7 - 5
REMOVING CYLINDER HEAD
Remove the spark plug;
Unscrew the screw from the distribution
chamber with 6mm plate washer;
Remove the cylinder head.
Note:
Engines 200 and 240cc may need to
repeatedly move the cylinder head up and
down to allow removal of the rubber bushing /
seal ring rectangular in the front left cylinder
stud.
Remove the cylinder head gasket with the two
guide bushings.
VALVE REMOVAL
Note:
Use a special tool (valve springs
compressor clamp) with appropriate
adapters on the removal and installation
of the valves in the cylinder head.
Compress the springs only what is necessary
to avoid causing damage to the valve springs.
Always replace the valves seals to prevent
excessive oil consumption and ensure the
correct operation of the engine.
Remove the clamps, remove the retaining
cover and remove the valves.
Remove the springs and the two existing rings
at the base of each valve.
Remove the seals on the valve guides in the
cylinder head.