Help! - 50hp yamaha 6h4 plugs and reeds needed

[peahead8748]

Hi all, I am new to this forum and I must say i am very impressed with it already! I am just unsure of the correct spark plugs for my zapcat with the yamaha 6h4 50hp. I would also like to replace the reed valves but i dont know where to get them in the UK. Any help would be appreciated. Thanks.

[boats.net]

It probably uses the B8HS-10 NGK plugs but without the model number can't say.