Carburetor, Si 20/17 D

Replacement Spaco (Dellorto) 20/17 non-injected carburetor for 2-port vintage Vespa P/PX series and largeframe scooters and Genuine Stella bikes. Makes a nice upgrade from 20/15 carbs and uses the same airbox. See the compatibility table below to ensure this product fits your ride. 

NOTE: The carburetors sold by Scooterworks are an aftermarket part and not part of the original manufacturing process. The difference between your original and this replacement is that on your original carburetor the air corrector and idle jets are shorter so they sit almost level with the top of the carburetor, whereas on this replacement, they are taller and make the air filter difficult or impossible to install.

There are two ways to correct this:

• You can remove the air corrector and the idle jet from your original jet stack and place them in your new carburetor.
• You can purchase a P200 air filter (SKU 131083) which has a heart shaped cut out on the bottom to accommodate the larger jets. This means that there are some slight differences between them and the original equipment on your scooter. It doesn't mean that the carburetor won't work; it just means there will be a little more installation effort beyond "plug and play."
• Jetting is something that requires trial and error. See more on our blog.

Specifications:

Includes the following jetting configuration:

• 42 Idle Jet
• 160 Air Jet (Air Corrector)
• E1 Atomizer (Mixer)
• 98 Main Jet

Compatibility:

*To fit on some early VNB and VBA models you will need to swap to a later carb box.

About Spaco: In 1971, Spaco began manufacturing carburetors for two and three-wheel vehicles in India. Spaco products range from venturi 7mm to 30mm, suitable for engines from 22 cc to 500 cc used on mopeds, scooters, three-wheelers and motorcycles. They are the only company permitted to manufacture Dellorto carburetors.

*Product is intended as OEM equivalent for listed models. Any misuse, alteration or alternative application is prohibited by law.