carb jet question

[frogggy35]

i bought a new jet main air bleed part numb 61A-1492G-58-00 from boat net. It shoud fith my yamaha 115 v4 -91 but it was to bigg, the old one was smaler.
now i wonder if the jet mainair bleed part numb 61A-1492G-44-00 is a smaler one. Anybody knows.

[robert graham]

I understand that the carb jets can vary from carb to carb on any motor, so when folks are rebuilding their carbs, they can't mix up those jets. I know the compression ratios are slightly different for each cylinder on my 90HP Yamaha. Guess these are just some very fine points in the tuning on these motors?

[frogggy35]

reply

but it must be a conpletly difrent carb to get this jet to fit it . the differences on the jets usully are that the hole in the center are bigger or smaler for more gas or air to pass , that increases or lower the power on the engine , on my new jet that i orderd , the jet was to wide on the outside. to get it in , then i have to drill in the carb.

[robert graham]

Sounds like they sent you the wrong jet...probably just grabbed one from the wrong parts bin, numbers on the package were wrong, etc...

[frogggy35]

moderator

i see what the moderator on this site say.

[rodbolt17]

that carb has 4 jets,bowl vent,pilot air pilot fuel and main. are you sure you knew what you were looking at on the diagram.
it can be confusing.
its a backdraft carb with fixed main,vent,pilot air and pilot fuel jets.