Lambretta DUE50 Owner's Manual page 85

First Service 300km— DUE 50cc 2 Stroke
Check all lights, horn and switches for proper function.
Inspect brake system, check brake fluid level.
Adjust rear drum brake.
Replace gear oil.
Check and correct tire pressure and visually inspect
for damage
NOTES:
Check and tighten all external nuts, bolts and screws.
Visually inspect scooter for leaks and damage.
Top off 2 stroke oil.
Road test the scooter.
Document service completion.
Clean scooter before delivery.