FAQ’s and system troubleshooting


Owners Manuals

Bergs I and II , BERG III

 Note: All orders placed after 11:00 AM Central Time will be shipped the following business day

Q; My generator runs for a few minutes and quits

A; 1) Check the engine oil level, low oil will shut the generator off

A; 2) Ensure the generator is on level ground


Q; My extended run auxiliary tank is distorting (blowing up)

A; The new EPA regulations minimize fuel vapor emissions, the tank is designed to grow and shrink as ambient temperatures change.   Attwood Marine states...

“Your new Attwood Marine EPA Certified tank is designed to keep evaporated emissions from reaching the atmosphere. As a result, pressure can build within it causing the tank to swell. This is normal and was accounted for when engineering your tank.”


  • Always keep the fuel filter cap tightly closed unless removed for refueling. If the tank is pressurized or swollen during cap removal, loosen cap slowly one full turn and wait five seconds (minimum) to relieve pressure before removing cap.
  • Due to potential pressure that may build within the system, check all fuel hose fittings and use a quality thread sealant to ensure no leaks occur.


Q; My extended run system is not drawing fuel from the tank and runs out of gas in the generators tank.

A; 1) Replace Teflon tape on the threaded fitting(s) connecting to the tank, ensure it has been wrapped clockwise, and retighten.

A; 2) Ensure the BERG cap has been tightened properly on the generator and the rubber gasket is not cracked or broken

A; 3) Ensure the vent on the auxiliary tank is in the open position, failure to open the vent will stop the flow to the generator

A; 4) Ensure the fuel pick-up tube inside the auxiliary tank is attached and not pressed to the bottom of the tank, or missing (occasionally the pick-up tube has fallen off due to shipping from manufacturer)


Q; My quick connect coupling on the hose from the Auxiliary tank is leaking when disconnected from the cap.

A; Fill out the warranty card information located online at Further instructions will be given in a return email.


Note* : Some generators like a few models made by Polaris, Champion, Yamaha, Powerhouse don't have internal fuel pumps so to allow the system to gravity feed you must put the external gas tank above the generator.