Stephen said Kayl spent hours squeezing the lemons in preparation.
Sometimes Kayl might save for something in particular, Stephen said, but often he will help out with his own school costs.
"If he wants to go on school trips, to help us out, he'll buy what he needs to take on the trip," Stephen said.
Stephen said his eldest daughter would often peddle her belongings at garage sales for extra cash to buy the extra things the family can't afford.
"He has six siblings, so there is nine of us altogether in the house. We don't struggle along but you have to wait your turn for some things if you know what I'm saying," Stephen said.
Stephen said Kayl usually made the lemonade and operated the stand by himself but sometimes his youngest brother, who is 5, would go out and keep him company for the day.
Kayl said he thought he had made $200 to $300 since he started selling things on Sunset Rd.
"I just got bored one day and asked my mum if I could do it - the idea just came to me," Kayl said.
"It's just fun to do, sit outside for the day and sometimes I get the same people coming past," he said.
Kayl plans to get out and man his stall as much as he can in the remaining weekends of summer.