The F PUMP JET indication displays when the fuel in the main tank reaches how many pounds?

• A. 50 lb
• B. 20 lb
• C. 10 lb
• D. 33 lb

Answer: (D)

The F PUMP JET indicator is a low-fuel warning tied to the main tank’s weight, designed to alert you before fuel runs too low. It comes on when the main tank fuel drops to a specific weight so you have time to respond and prevent fuel starvation. The value of 33 pounds is chosen because it corresponds to roughly 5.5 gallons remaining, providing a safe buffer for switching pumps or ensuring continued fuel flow if the primary pump begins to lose suction. This threshold balances early warning with avoiding nuisance alerts, giving you enough lead time to take action. The other numbers would either come too early, causing unnecessary warnings, or too late, risking insufficient fuel once a problem develops.