Take a hammer hit that damn nut 10 to 15 times as hard as u can to losen it up some...then take mower into joe & his team at western lawn to repair....lol...just kidding...i use joes team as much as possible...great place for all ur lawn care equipment...
We have seen this before, the threadlock that Cub uses is excessive. Best thing to do would be to use an impact gun with a wrench on the hose. You can also purchase a suction gun and suck the oil out through the fill tube. If you get the mower in here we can also crack it loose for you real quick.
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