A really great manual which is indispensable for all those who want to deal with the vehicle technology of their Vespa PX in detail.
Here is everything contained what one would have to investigate otherwise laboriously:
Tightening torque values for engine/frame/steering tubes/headset bearings
Required special tools and their use (illustrated)
Systematic troubleshooting for defective
Engine overhaul
Data/tables/adjustment values
Functional diagram/cutaway diagrams of e.g. carburettor/clutch
CONCLUSION: Essential for every Vespa mechanic!