No expense spared, a new 1200l bunded diesel storage tank has just
arrived in my barn.

Most of the assembly work is obvious but I am challenged by the
operation of the lockable inspection/filler cap. The logo shows partial
rotation followed by tipping up or lifting off. Reasonable force does
nothing!

Are tools available for fitting over the lugs cast onto the lid? Bit
like a fancy immersion heater spanner?
--
Tim Lamb