- Turn the engine to close the intake valves,
i.e., moving the reference on the wheel speed
sensor to the top, as shown in the figure.
- Remove the central screw and the valve
lifting device mass stop bell using the specific
tool.
Specific equipment and tools:
Adjustable wrench 020565Y
- Remove the return spring and the valve
lifting mass with relevant travel end washer.
N.B.: Be careful not to make washer
and spring fall into the engine
through the chain compartment.
- Align the references located on the wheel
speed sensor and on the head.
- Loosen the tightener central screw.
- Unscrew the 2 fastening screws and remove
the tightener with relevant gasket.
PGO BR-500 ENGINE
P.10-68
Thermal Unit & timing system
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