If you stored your unit w/moisture in the tank you'll
need a 10-inch adjustable wrench to get the darn cap
off!!! Left or counter-clockwise is LOOSEN & Right or
clockwise is TIGHTEN. RK
Royalle, November 2007
Go to an automotive shop and buy flexible (rubber) wrenches. They come in different sizes and can be used to loosen or tighten ANY caps without marking or damaging the cap. They are also good for people with arthritis or such. I use mine to open all jar tops. Good luck.