On Saturday, February 23, 2019 at 10:57:32 AM UTC-8, Tom Del Rosso wrote:
I have a portable Whirlpool dishwasher that hasn't been needed in 10
years. If I use it right out of storage is it likely to leak from dried
out and cracked nylon couplings or something?

Nylon is fine when dry, but ten years is likely to leave the hoses in
poor condition (portable dishwashers usually have flex hoses to the
plumbing attach point). Those aren't hard to replace, but if you want 'em
to look pretty, get a factory-replacement part with the right crimps.

As for 'likely', I'd say plug it in and find out. The external layer of
the hoses might look cracked, but that ISN"T the layer that holds the
water pressure. If youi can do the first test outdoors, or over a drain,
and use a GCFI receptacle for power, faults can't hurt you.

But maybe you don't want the best dishes in the tub when
testing.