PIAGGIO 500 cc Service Manual page 87

Thermal unit and timing system
- Assemble the idler gear with torque limiter, flywheel
and flywheel cover as described in Chapter 6-Fly-
wheel and Starting System and in Chapter 5-Fly-
wheel Cover
N.B.: To facilitate the assembly operation, assemble
the flywheel cover without the cooling system sleeves.
- Remove the timing control plug by means of a TORX
wrench.
- Align the phonic wheel and head reference marks as
shown in the figure.
- Keep the chain slightly tensioned, turn the driving
shaft by means of the driving pulley until the reference
mark on the magneto support and the one on the
flywheel cover are aligned.
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