PIAGGIO Vespa 150 1962 Operation And Maintenance Manual page 23

For access to the engine, take off the engine bonnet. Proceed as follows (see Fig. 15):
- Pull the lever « 1 » and turn it so as to release it from the bonnet;
- Move the bonnet outwards until front dowel « 2 » disengages from the hole on the frame;
- Push upwards and turn the bonnet, thus releasing the fixing hook « 3 » from the frame;
- Move bonnet outwards around its hooked pivot « 4 » until the latter disengages from the
hole on frame.
For re-assembly, reverse the procedure.
Fig. 15 - Engine bonnet removal
1. Engine bonnet blocking lever 2. Front dowel 3. Fixing hook 4. Hooked pivot.
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