Question about 2005 Suzuki DR-Z 125

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I dont know where the tubes connect that are connected to the carburetor, when i kick start it some gas just hits the floor

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They are overflow/vent tubes Do not plug or connect them to anything.

Posted on Jun 23, 2009


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Were does the small vent tube out the top of the gas tank go on a stihl 029 farm boss. mine broke off flush with the nipple and is leaking gas badly.

This is very important that the connections are correct. The fuel is pulled through the carburetor to purge all the air before starting. Air will keep the fuel pump from refilling the carburetor when attempting to run.

A filter is attached to the end of the fuel tube located in the tank. This hose is the fuel pickup and passes through a tight hole in the tank. The other tube is the return also from the carburetor and is open on the end returning inside the tank also fitting through a tight hole in the tank.

It is easy to reverse these tubes. If one has cracked it is likely all need to be replaced. Take pictures and take notes before starting.

Reversing the hoses allows for unfiltered fuel to fill the carburetor with the result of plugging the jets.


Feb 25, 2017 | Stihl Garden

1 Answer

Can't remember where each plastic tube connects on carburetor, Part Number 530071775.

the small tube hooks to the carburetor. the larger tube connects to the primer base. hope this helps.

Nov 21, 2015 | Garden

2 Answers

2010 Vespa, tried starting and runs while just idling. However, when you try to give a little gas it quickly dies. I did Tue best I could checking the air filter, fuel filter, spark plug, etc. Stuff I...

Hi, Divecop3 these tubes and hoses are for venting and must remain clear of obstruction and connection at one end otherwise the usual suspects are:
1. Idle circuit and transfer ports clogged.
2. Air fuel mixture adjustment too lean.
3. Pilot jet clogged.
4. Faulty accelerator pump.
5. Float level too low.
6. Float bowl contaminated old fuel, water, dirt, rust, etc.
7. Float bowl vent or overflow tube clogged.
8. Fuel flow to carburetor restricted.
9. Intake manifold leak.
10. The gas cap is not venting properly or fuel tank venting system blocked.
11. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
12. Needle and seat stuck closed in the float bowl.
13. Multi carburetors not in sync.
For more information about your issue please click on the blue links below. Good luck and have a wonderful day.
Modern Vespa My Et4 dies as soon as give it gas
Scooter dies when give it gas

Btw, I’m available to help over the phone in case u need at

May 23, 2017 | Vespa Motorcycles

1 Answer

I have a craftsman chainsaw 2.2 cubic and there are 3 fuel lines two comming from the primer bulb and one going from carb into the motor or crank. The return is connected to a nipple on the crab and the...

This is a common problem. The fuel lines can become brittle and fracture, or sometimes they swell and will not stay on their connections.

The tube that connects between the carburetor and motor is likely used to pulse the fuel pump that is internal to the carburetor.

The primer pulls the fuel through the carburetor drawing the air out. As the primer is stroked first air than fuel is pumped out of the carburetor. The output of the primer returns to the fuel tank. That fuel line appears to have failed or become disconnected in your craftsman. Either the hose has broken at or near the fuel tank, or has pulled out of the tank. There is a small hole in the tank for many machines. The hole is smaller(providing a seal) than the tube diameter requiring a minor force to squeeze the tube back in place.

Look for the fuel feed tube that also connects from the fuel tank to the carberator. Any loose connections will allow air into the carberator and it will not beable to run.

Important is that the fuel feed tube can not be switched with the return tube from the primer. Connected inside the tank is a fuel filter that protects the carberator from contamination.

Hope this helps?



Jun 28, 2017 | Poulan Pro 42CC 2 Cycle Chainsaw, 18"

1 Answer

My Yard Machine lawn mower stops working. I can start it if I press the gas button a few times but it would stop running right away. The gas is not reaching the engine. I opened the air filter and found...

the red tube should just slide over a tube sticking out of the carburetor or the plastic housing on the breather.all you do is plug it in. if that dont fix it my guess is there is debris in the carburetor that needs to be cleaned. take it apart clean and it should run as like new

Nov 23, 2017 | Mtd 22" Yard Machine Push Mower

1 Answer

All the gas lines crumbled. Need to know where to reconnect new lines.

On the carburetor the higher fuel tube or the closest one to the primer bulb were the hose connects to is the inlet. Attach the filter to that hose, The other is a return line which is the lower one on the carburetor.

Mar 11, 2010 | Plumbing

2 Answers

McCulloch 3216 fuel primer and gas tubes routing?

Fuel Line Replacement by
  • The hose in the tank with the filter on the free end connects directly to the carburetor input connection.
  • If the saw is equipped with a primer bulb, the output line from the carburetor connects to the suction side of the primer (once the bulb is collapsed it draws fuel from the tank through the carburetor to refill the bulb as it inflates).
  • The pressure side of the primer returns displaced fuel to the tank as it is depressed.
Take lots of notes and a few digital photographs will help with reassembly. HTH

Nov 01, 2009 | McCulloch Garden

2 Answers

Troybilt weedwacker won't stay running. It starts

you may need to rebuild the carburetor.Check all the gas lines for cracks or leaks.Check the primer bulb if it has one.Then try and readjust the carburetor.If that still don't work,then try to rebuild the carburetor.

Sep 02, 2009 | Garden

1 Answer

Honda crf70 gas line dripping

Runs from petcock to the carburetor, but... do you know where the carb. is?

Jan 19, 2009 | 1983 Honda XL 125 R

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