Bike Bugs fuel line routing (Tanaka QBM-23N bicycle engine)

[Pappa Jim]

I just got into motorized bikes. First experience is a Tanaka QBM-23N engine with no fuel or vent lines. It does still have the primer bulb on the gas tank which should go to the "in" nipple on the fuel pump. What is next. where does the line from the pump's "out" nipple go? and the carburetor has 2 small nipples and 1 big one. What goes where? Let me know folks. I'm legally blind so that makes things even more challenging.

 

[wrench]

I just got into motorized bikes. First experience is a Tanaka QBM-23N engine with no fuel or vent lines. It does still have the primer bulb on the gas tank which should go to the "in" nipple on the fuel pump. What is next. where does the line from the pump's "out" nipple go? and the carburetor has 2 small nipples and 1 big one. What goes where? Let me know folks. I'm legally blind so that makes things even more challenging.

ON LINE Search - Tanaka QBM -23N Engine parts diagram

 

[Pappa Jim]

ON LINE Search - Tanaka QBM -23N Engine parts diagram

Thanks Wrench. I've already checked out the diagram approach, and maybe I'm stupid, but it wasn't any help. And I live in a rural small town in Wisconsin. No bike shops here.

 

[Sidewinder Jerry]

Thanks Wrench. I've already checked out the diagram approach, and maybe I'm stupid, but it wasn't any help. And I live in a rural small town in Wisconsin. No bike shops here.

Take muti-angle pictures of the carburetor and post them.

 

[Pappa Jim]

Take muti-angle pictures of the carburetor and post them.

Good idea. Thanks Jerry! And also thanks for letting me know how to start a thread. Much appreciated!

 

[Mossy]

I just got into motorized bikes. First experience is a Tanaka QBM-23N engine with no fuel or vent lines. It does still have the primer bulb on the gas tank which should go to the "in" nipple on the fuel pump. What is next. where does the line from the pump's "out" nipple go? and the carburetor has 2 small nipples and 1 big one. What goes where? Let me know folks. I'm legally blind so that makes things even more challenging.

The one big one the same size as the pump one is my guess the smaller ones are vents

 

[Pappa Jim]

The one big one the same size as the pump one is my guess the smaller ones are vents

Thanks Mossy. I'll see what happens with that info.

 

[Mossy]

The vents are usually above the fuel nipple