Which Of The Following Is True About A Carburetor Backfire Flame Arrestor?

When should backfire flame arrestors be inspected?

This device is designed to stop the flames that could potentially result from an engine backfire from coming into contact with fuel and starting a fire. A monthly inspection of your backfire arrestor should be performed to ensure that it remains damage-free and that it is still tightly fastened to the carburetor.

Which is an acceptable means of backfire flame control?

(b) The following are acceptable means of backfire flame control for gasoline engines: (1) A backfire flame arrestor complying with SAE J-1928 or UL 1111 and marked accordingly. The flame arrestor shall be suitably secured to the air intake with a flame tight connection.

Why do boats backfire?

Backfiring Is A Result Of A Lean Condition. It Can Be Caused By Vacuum Leaks Or Incorrect Carb Settings. Turning Idle Mixture Screws In Will Close Off Fuel And Make Idle Leaner. Midrange And Up Are Not Controlled By Idle Screws.

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How often should flame arrestors be inspected?

Guidance on Inspection Intervals A first inspection 3 months following commissioning. An annual inspection is recommended as a minimum even for “clean” processes. An inspection if there is any evidence of an explosion.

What is required for backfire flame arrestor?

Because boat engines may backfire, all powerboats (except outboards) that are fueled with gasoline must have an approved backfire flame arrestor on each carburetor. Backfire flame arrestors must be: In good and serviceable condition. USCG–approved (must comply with SAE J-1928 or UL 1111 standards).

How does a backfire flame arrestor work?

As the name suggests, the purpose of a boat backfire flame arrestor is to stop flames, which can result from an engine backfiring, from coming into contact with other fuel and starting a fire on board your boat. To do this important job, the backfire flame arrestor needs to be in good condition.

What is a backfire flame control?

Backfire flame control devices are designed to prevent open flame from leaving the carburetion system in the event of a backfire. Vessels equipped with gasoline engines, except outboard motors, must have one of the following backfire flame control devices installed on the engine.

Why must you operate the exhaust blower?

If your boat is equipped with a power ventilation system (exhaust blower), turn it on for at least four minutes before starting your engine. This will help eliminate fuel vapors in the bilge. Before starting the engine, sniff the bilge and engine compartment for fuel vapors.

What must you do when anchoring at night?

How to Anchor at Night

  1. Take full stock. Keep track of the tide, wind, traffic, and changing conditions.
  2. Post someone on watch. Supervision is necessary because, even with an anchor, the conditions can and will change.
  3. Check in regularly.
  4. Keep your lights on.
  5. Know the rules.
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What happens when a boat backfires?

Backfiring is a very dangerous condition that can cause a fire and/or more engine damage. Don’t keep running the engine if it keeps backfiring. Boats can explode. Moving parts can rip off your fingers.

What are the causes of engine backfire?

What Makes An Engine Backfire? 5 Causes Explained By Carr Subaru

  1. Lean Air/Fuel Mixture.
  2. Rich Air/Fuel Mixture.
  3. Bent Or Damaged Valve.
  4. Incorrect Spark Firing Order.
  5. Bad Ignition Timing. Inside each cylinder of a modern combustion engine, you’ll find at least one intake valve and at least one exhaust valve.

What do two short blasts of a horn mean?

Two short blasts tell other boaters “I intend to pass you on my right (starboard) side.” Three short blasts tell other boaters “I am backing up (operating astern propulsion).”

Under which of the following conditions is a Type B 1 fire extinguisher required?

All vessels, including PWC, are required to have a Type B USCG–approved fire extinguisher on board if one or more of the following conditions exist: Closed compartments under seats where portable fuel tanks may be stored. Closed storage compartments in which flammable or combustible materials may be stored.

Which of the following is the most suitable place to store a Marine fire extinguisher?

Experts recommend storing your fire extinguishers in an upright position and mounted in an easily accessible place. You should keep them in rooms where fires are more likely to break out such as the hull, cabin, kitchen and bilge.

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