Question about Homelite Consumer Products Backpack Blower/Vac, Carb

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Brand new VT08580 Backpack will not start

The primer bulb does not fill with fuel when depressed. Have pressure tested bulb assembly-its fine-tested both fuel lines and they are clear

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  • 276 Answers

Check the control switch first.and reply to me.

Posted on Nov 24, 2008

  • smarttech Nov 24, 2008

    You could pull the air silencer off to see if any carb is flooding. It's OK to run it on a hose or at an idle with the box off, just don't run it under a load with the box off.

    ----------------------------------

    also check this link for extra help with proper diagrams.

    http://forums.iboats.com/showthread.php?...



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1 Answer

Fuel primer


The primer bulb fills the bowl of the carburetor on initial start-up. Most primer bulbs are depressed 4-6 times. Set the choke at half and either pull the starter cord four times. If it doesn't start, re-prime and take the choke off.

Mar 16, 2014 | Garden

Tip

Chainsaw primers/ re fitting hoses


It is quite obvious, by the amount of reqests we see that there is confusion regarding the correct orientation of fuel hoses on externall primers.
Lets start by saying this component is not a primer, if you were to push fuel into the carb, you would just flood it, and make starting near impossible, they are purges, they actually pull fuel from the carb, and dump it back into the tank, this way you cannot over purge the machine, and when the saw runs out of fuel, it very quickly re fills the carb ready for easy re starting.
So the fuel hose from the fuel tank,the one with the fuel filter on the end, goes to the fuel inlet elbow on the carb, this is the elbow closest to the pump cover on the carb, normally held with one philips head screw and made of alluminium. The other hose from the carb, closest to the metering side of the carb, normally held with four screws and made of chrome plated steele, goes to the shorter of the two connections on the back of the purge, this is the suction side,by pulling fuel from the carb emptys the fuel chamber, atmospheric pressure from the vent hole in the metering cover pushes the metering diaphram down opening the fuel inlet needle, allowing fuel from the tank to enter, and re fill the chamber, you can test this by putting a finger over the connection, depress the purge bulb and let go, you should feel your finger sucked down, the longer of the two connections on the back of the purge is the pressure side, this hose will go back to the tank, it will just push into the tank with nothing on the end, you can test this side by putting a finger over the connection, depress the purge bulb, you will feel a pressure on your finger, if you have clear fuel hoses, you will be able to see the fuel movement. Any signs of cracks, splits, or fuel loss from any of the hoses will greatly effect the running and well being of the machine.
I hope this has been helpfull and informative.

on Mar 08, 2011 | Garden

1 Answer

Stihl chainsaw primer bulb will not fill. Puts pressure in fuel tank


try switching the tubes on the back of the primer bulb

Nov 12, 2013 | Stihl Garden

1 Answer

Diagram of fuel lines from tank to primer to carb and back to tank for a poulan 2050 chainsaw.


clip_image002.gifFuel components are onthe "Engine Assembly" & "Handle, Chassis, & BarAssembly" detail pages.
Replacement fuel lines can be found at yourlocal chainsaw seller/mechanic. They are different diameters.

Fuel Line Replacement
  • 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.
2_3_2012_12_23_25_pm.gif

Feb 21, 2011 | Poulan P3314 14" Gas Chain Saw 2.0 Cuin...

1 Answer

Primer button will not fill up


The primer bulb pulls fuel from the carb, into the bulb, and pushes it back to the tank. If the bulb does not fill there will be a number of reasons why, firstly if the saw is new, there will be oil in the carb from the starting prosess at the factory, the saw will start without fuel in the bulb, but will take many more pulls to get it going, once the saw starts and runs for a few minutes the oil in the carb will clear, and the bulb will fill normally when depressed, if your arm is not up to cranking the engine many times, remove the top cover, remove the air filter, dribble some fresh fuel/oil mix down the filter elbow, the saw will start after a few pulls. If the saw is a used machine the problem may well be a blocked fuel filter in the tank.

Feb 08, 2011 | Husqvarna 350 18 Inch Gas Chainsaw 52CC...

1 Answer

Eager ****** leaf blower ,no fuel in pick-up line


It works like this. Just follow each line to find the incorrect connection.
79a0d89.gif Fuel Line Replacement by SmallEng.com
http://www.youtube.com/watch?v=JrXpU70Hmi0
  • 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 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 to help with reassembly. HTH
Lou

Nov 02, 2009 | Garden

1 Answer

I have an echo C8 345 that will not run more than 5 secs. when you push the primer bulb and fill the carb, it will run until that is used up and quit. i took the fuel line off at the carb and gas runs out...


If pushing the bulb feeds fuel to the carburetor it isn't conneced properly.
EchoUSA
http://www.echo-usa.com/pdf/documentation/CS300_100605.pdf
  1. The filtered hose from the fuel tank connects directly to the carburetor input connection.
  2. The output line from the carburetor connects to the suction side of the primer bulb (once bulb is collapsed it draws fuel from the tank through the carburetor to refill the bulb as the bulb reinflates).
  3. The pressure side of the primer returns any excess fuel to the tank as it is depressed.
HTH
Lou

Oct 24, 2009 | Echo Garden

1 Answer

Won't start


drain fuel tank. keep depressing the primer bulb until it is clear. drain tank again. remove carb cover and disconnect lines one at a time. keep depressing primer bulb to get rid of excess gas. remove spark plug an turn engine in a position that the spark plug inlet is facing the floor, pull starter rope a few times to get rid of gas in the engine chamber.

Oct 22, 2009 | Homelite Mighty Lite Lawn Trimmer

1 Answer

My Poulan Pro weed trimmer SM132 does not run. I replaced the primer bulb and spark plug and it ran fine for 10 minutes. Now it will only start with the choke on and dies immediately. It will not start...


The primer does require two lines attached as it is a Walbro style primer. All four SM132 models uses the WT628 Carb. Since the trimmer ran 10 minutes then you have got all the lines connected right. Mostly you got trash in your carb or it simply needs rebuilding as the diaphragm may have pin hole in it or the check valves are worn out. Depending on the age and use of your unit you may also have a sticking piston ring.

Aug 23, 2009 | Poulan Garden

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