How do I fix a leaky Suncast Hose Reel?

I have a Suncast free standing hose reel. (PHR200) IT is leaking where the small hose from the faucet screws into side of the reel box. I replaced the washers in both the hose and in the hose entrance on the reel but it still Leaks. I am thinking it may need new O rings and some lube. I need instructions on how to take it apart to fix it. Also, can the O rings and lube be purchased at a hardware or a plumbing store?