pornking

hi as were new virgins to the jetski world we have a kawaski jh 750 its a 1996
well the story starts as buying a sit on jet ski with a blown engine !!after finding a engine weve bolted up the replacment engine but a bit puzzled over som fuel pipes &breather pipes there looks to be fuel in 7 out on carbs than a breater on inlet manafold than in left corner a 2 wire electric thing with what looks like 2 pipes should go fuel or vacume ??on muffler manifold there looks like a take off for a pipe ,
is there or a site what shows all engine connected ,ive a pdf manual but its not that clear &ive looked at rivamotosport but its choped into sections what a bit confusing cos theres a fuel inlet on 1 carb that 2 takes on other one but on riva it only shows the 2 on the one carb
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,please help even photos,,,,,,,,,,,,,,,,,,,,,,,,,