But Rafi Leeker, Mason Gould, Callum Neil and Pat Garman responded in style.
Joint-manager Delmonte said: "It’s a great way for us to start. I think people might have thought we would slip up here.
"Maccabi came flying out of the blocks against us and were early fired up. We were lucky to just be one goal behind.
"But once we took the lead we never look like surrendering. We kept the ball well and were rarely threatened."
Meanwhile, Manchester Maccabi 2nd lost 6-2 to Iraq FC in the Accounts League Division One.