Which component is designed to keep foreign matter out of the carburetor?

• A. Ignition coil
• B. Main fuel strainer
• C. Air filter
• D. Oil pump

Answer: (B)

Keeping fuel clean before it reaches the carburetor protects the metering system from clogging and improper mixture. The main fuel strainer is placed in the fuel line ahead of the carburetor and uses a screen or filtering element to trap dirt, rust, and other debris. By removing these contaminants, it prevents blockages in the carburetor jets and passages, helping maintain steady fuel flow and reliable operation. The air filter handles debris in the air intake, not fuel, so it won’t prevent contaminants from entering the carburetor. The ignition coil and oil pump serve unrelated functions—the ignition system and lubrication, respectively. Regularly inspecting and cleaning or replacing the strainer keeps the carburetor functioning smoothly.