Dimension - 41mm  (under the fuel tank )
Weight  - 40 gm
 
A fuel cock, also known as a fuel petcock or fuel valve, is a device used to control the flow of fuel from a tank to an engine or system, often found in vehicles (e.g., motorcycles, small engines) or machinery. Since you mentioned "oil strainer full tank" earlier, I’ll assume you’re referring to a fuel cock in the context of a fuel tank, likely for a vehicle or equipment with an oil/fuel strainer system.
 
Key Details:
Function: Regulates or shuts off fuel flow from the tank to the engine or carburetor. Common settings include ON, OFF, and RESERVE (for accessing a reserve fuel portion).
 
Types:
Manual Fuel Cock: Operated by hand, typically a lever or knob (e.g., on motorcycles like Honda or Yamaha).
Vacuum Fuel Cock: Automatically opens/closes based on engine vacuum, common in modern motorcycles.
Inline Fuel Valve: Used in small engines (e.g., lawnmowers, generators) or industrial systems.
 
Components: Often includes a built-in strainer or screen to filter debris from fuel before it leaves the tank, tying into your earlier "oil strainer" query. The strainer prevents contaminants from clogging the carburetor or fuel lines.
 
Materials: Brass, aluminum, or plastic, with rubber seals to prevent leaks.
 
Common Issues:
Clogged strainer in the fuel cock (especially with a full tank stirring up sediment).
Leaking seals or stuck valves, causing fuel starvation or overflow.
Vacuum petcock failure due to diaphragm wear.
 
Connection to "Oil Strainer Full Tank":
The fuel cock often integrates with or is located near the tank’s strainer. A full tank can increase pressure or agitate debris, clogging the strainer or fuel cock, leading to poor fuel flow or engine stalling.
For example, in motorcycles, the fuel cock’s screen (strainer) filters fuel as it exits the tank. If clogged, symptoms include sputtering or power loss.
 
Practical Advice:
Inspection: If you suspect issues, check the fuel cock’s strainer by removing it (ensure the tank is not full to avoid spills). Clean with carb cleaner or replace if damaged.
Maintenance: For a full tank, drain a small amount of fuel to inspect for water or debris. Use a fuel stabilizer if the tank sits long-term to prevent sediment buildup.
 
Specifics Needed:
Application: Is this for a motorcycle, car, boat, generator, or other equipment? For example, a Yamaha motorcycle fuel cock differs from a diesel generator’s.