Valves Assembly - PIAGGIO 500 cc Service Manual

Thermal unit and timing system
- Measure the spring free length
Standard length: 44.4 mm
Limit allowed after use: 43.7 mm

Valves assembly

- Put the valve spring caps on the head.
- Assemble, alternately, the 4 oil seals by means of the
specific tool
- Lubricate the oil seals and the valve guides.
Specific tool:
Oil seal assembly tool
- Assemble the valves, springs, and caps. Compress
the springs and insert the cotters in their seats by
means of the specific tool provided with adapter.
Specific tools:
Valve assembly tool
Adapter
N.B.: Do not change the valves assembly position.
Assemble the valve springs according to the reference
colour, cotters side (large coil spring).
020306Y
020382Y
020382Y012
05_206
05_208
7
05_208_1
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