Piaggio Vespa Carburettor Throttle Slide (6823.11) PX80-150
The throttle slide limits the amount of air passing through to the engine. The further the throttle slide can be opened, the more air can pass through. Some throttle slides have cutaways for air pockets on the inside of the part. These cutaways add additional air to the petrol mix, resulting in the scooter running leaner. If the slide has a flat underside, they do not add any additional air to mix and is therefore perfect for compensating for a leaner mid rev range.
Comparison No. 198970 (PIAGGIO)