Dual Fuel Supply Diagram With Return.

[Hydrotoys]

There are about a hundred ways to do this. Some folks put the primer on the return line due to worries of sucking wind through the primer system.

[NeVerMind]

What is the purpose of the restrictor jet and where do I get one?

[ABBOTT]

What is the purpose of the restrictor jet and where do I get one?

doesn't that keep the fuel pressure from going to high? or is it low?? i can't remember. Someone correct me

[CrazyA]

Both... kinda.

Without one, the pressure would be too low. Too small of one, and the pressure could be too high.

It's a way to regulate the fuel pressure.

[RX951]

Some folks put the primer on the return line due to worries of sucking wind through the primer system

My primer comes off my return line.

[GP1500SC]

I like your diagram 951
I was thinking of mounting my tee to the side of hull for a cleaner look and so they wouldn't be flopping around but that is just right!

[ABBOTT]

good info Billy! You always have these bad-ass pics with awsome instructions to them!

[NeVerMind]

Both... kinda.

Without one, the pressure would be too low. Too small of one, and the pressure could be too high.

It's a way to regulate the fuel pressure.

Is it a jet, or is it that plastic top looking thing in the fuel line? I thought that was a one way valve.

If it's a jet, where do I get it and what size?

THanks!

[IrishGpr05]

When you guys did this, did you extend the fuel reserve line inside the tank?

If so what did you use? Just regular fuel line like you can get from riva?

Also did you take of the little trap door on the fuel sending unit and leave the screen part?

Thanks,

Jon

[RX951]

Yes remove the flap
Yes use regular fuel line
Yes extend the main line to match the reserve.

(the reserve is always the deeper one as it pulls the last bit of fuel from the bottom of the tank; the main supply is shorter.)

If you are going to pull the sending unit out, you may want to consider doing this mod also that Pistonwash posted.

Just a thought.

http://www.greenhulk.net/yamaha/viewtopic.php?t=847&sid=800a522bed074bba21ec1923ffdad361

[ABBOTT]

Some folks put the primer on the return line due to worries of sucking wind through the primer system

My primer comes off my reserve line.

your primer comes from the reserve???? or did you mean "return" line??

[RX951]

yes, yes, I meant RETURN line.

...gonna go edit

[ABBOTT]

marks diagram at the top says the primer is in the main feed line??? Mine isn't like that.

[RX951]

Hydrotoys wrote:

There are about a hundred ways to do this. Some folks put the primer on the return line due to worries of sucking wind through the primer system.

thats where mine is connected....the return

[IrishGpr05]

One more and i'll shut up!

Are you guys using plastic fittings where the fuel supply lines hook up to the carbs or are they brass?

Thanks,

Jon