Model Identification

Can someone please help me with description of Yamaha Outboard Saltwater Series 2 (New Zealand model). 175 DETOX, 502580, 6G5.
Is this 4 stroke?, EFI?, what year? other details? Many thanks. Warren.

[boats.net]

I don't have much information on it but it's probably a 2002, in 2003 the serial numbers started out 6G5-1000007