Carburetor YSN PHBL AM, SD, BT 25mm with lever choke
Description
PHBL carburetor 25 mm AM, SD, BT with choke lever
The PHBL tuning carburetor 25 mm is suitable for both modern scooters with CVT and Vespa classic scooters with manual transmission. In the scooter sector, it is mainly used on 2-stroke maxi scooters, but can also be used on 50cc racing / high-end engines with appropriate adjustments. In the case of manual transmission scooters, it is often used for Vespa Smallframe models with original air filter box.
The carburetor is characterized by simple tuning and offers performance and processing quality on a par with Dellorto.
Technical data PHBL 25 carburetor:
- Connection width of intake manifold: 30 mm
- Air filter connection width: 38 mm
- Vacuum connection: No
- Oil connection: No
- Main jet: M6 #102
- Idle jet: M5 #70
- Starter jet: M5 #60
- Carburetor needle: D22
- Slide valve: 40
- Emulsion tube: M6 AQ266
Carburetor for scooters, motorcycles and mopeds
The smooth operation and optimum power output of your scooter, motorcycle or moped depends, among other things, on the carburetor, whose job is to create the right mixture of air and gasoline.
How the carburetor works
When the rider operates the throttle, the carburetor slide moves upwards, increasing the air flow that is sucked in through the air filter. The carburetor then mixes this air with petrol, creating a combustible mixture. This mixture is fed into the cylinder through the intake manifold and the reed valve.
The carburetor is equipped with jets to adjust the ratio of fuel and air and thus ensure an optimum air-fuel ratio. It is important that you adjust the carburetor settings to the setup of your engine.
Adjusting the Carburetor
Proper carburetor adjustment is critical for optimal engine operation and durability. Depending on the type of air filter, cylinder and exhaust of your setup, you will need to readjust main and pilot jets. To check the correct operation of the carburetor, you can refer to the color of the spark plug:
- White spark plug = too lean
- Black spark plug = too rich
- Brown spark plug = optimal setting
| Carburetor YSN PHBL AM, SD, BT 25mm with lever choke | |
|---|---|
| Article no. | SP-48790 |
| EAN | 4057237650351 |
| Weight | 0,43 kg |
| Brand | Standard Parts |
| Product type | Carburetor |
| Carburator type | PHBL |
| Diameter carburetor | 25mm |
| Air filter connection | 38mm |
| Manifold connection | 30mm |
| Ports | Without vacuum port, Without oil port |