Question about Husqvarna Chain Saw 20" Bar

2 Answers

Chainsaw is extremely hard to start and won't stay running.

Replaced all fuel line, fuel and air filters, and primer bulb. The saw is difficult to start and won't stay running. When it sounds like it's about to die, I will apply gas and that seems to kill it faster. Also noticed that when I prime the saw the fuel just leaks out of the carb, never happened before.

Posted by on

  • eric1958 Dec 31, 2008

    Did that!

  • tplp5100 Mar 22, 2009

    I start the chainsaw , runs for 5 sec or less than dies. I try to give it gas as it is dying but it sounds like it is starving for gas. I restart it every time right after. It's a new chainsaw about maybe 2 hr's on it. Its 2 yr's old. It's a stihl ms290. I was running the saw for about 10 min's then this happened. Thanks for any help. Tom



2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

It turns out to be a crack in fuel line. It didn't leak but would **** air.

Posted on Mar 23, 2009

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert that hasĀ over 500 points.


    An expert who has answered 200 questions.

  • Expert
  • 239 Answers

Adjust the two little screws on the carburator

Posted on Dec 31, 2008


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

After running for a bit it wont start, the primer is < a 1/4 full just sucking air.

this sort of sounds too me as A fuel line routing problem / as sometimes happens when replacing a old fuel line one doesn't get it back right as it was before and maybe runs line instead by a part that gets hotter than others , this causes fuel to boil in a hot saw and create a air pocket , this makes it near impossible to get liquid fuel to pass by it and blocks up the works , other thing it could be is that primer bulb has a tiny crack inside and allows air to enter and not fuel (heavier) ive seen that happen a few times as well

Aug 31, 2015 | Husqvarna 240 Chainsaw 16" Bar -free...

2 Answers

My prime bulb looses pressure and first start is hard. I have to remove fuel line from filter and cover with thumb prime re install then first start takes time.

Does the engine run fine after it starts? Most common problem with primer bulb losing prime is an air leak in the fuel line or primer bulb. Air leaks don't always leak fuel. If there is an air leak between the primer bulb and gas tank there is no pressure, only vacuum. If it is not a major leak it might not leak without pressure but it will allow air to enter the fuel line. If it is a very minor air leak it could allow air to replace the liquid in the fuel line over time, but so little air once it is primer again that the fuel pump can over come it with volume of fuel.

Primer bulbs do not stay firm, as they are when initially pumped up, after the engine is running. There are check valves in the primer bulb that hold pressure in the primer bulb and throughout the fuel line to the engine. Once the engine starts the fuel pump creates vacuum drawing fuel into the engine diminishing this pressure and releasing the check valves. At this point the primer bulb is just another segment of fuel hose allowing fuel to pass through it as the fuel pump demands. The primer bulb functions much better when the outlet side is higher than the inlet side. This position makes it easier for the check valves in the primer bulb to seat and release as needed. If the primer bulb is functioning properly and is positioned with the outlet side higher than the inlet it should not be necessary to cover the end of the fuel hose with your thumb to get it to prime.

If the engine is hard to start after being fully primed there could be a problem with the fuel system on the engine. Some engines are hard to prime once air has entered the system, especially fuel injected models.

Dec 19, 2014 | Boating

2 Answers

I have a Craftsman 32cc blower/vac model #358.797251. Replaced fuel lines and primer bulb. Getting fuel but won't start

Check for spark and air filter in good shape. Make sure bulb side gasket is OK! No leaks! Good luck!

Oct 16, 2012 | Garden

1 Answer

Poulan Pro Chainsaw, PP3516AVX

is the cap vent plugged?

Aug 18, 2012 | Poulan Garden

1 Answer

How do you check for spark on a McCulloch 3200 Chainsaw?

They make a handy dandy tool for that. If you are going to work on/with small engines, it's a good investment.
This one is similar to the one I use -

Small Engine Tool for Briggs Stratton Kohler Tecumseh Spark Tester eBay

Dec 29, 2017 | McCulloch Garden

1 Answer

Wild thing chainsaw won't stay running. I replaced all fuel lines, primer bulb, fuel filter, gaskets to the carb. and have cleaned the carb out very well and blew out all passages. I pulled the spark...

On the carburetor got two screws to adjust the carburetor. The first is to adjust the saw when working at high speeds. Another is when running at low revs. It is best to either put back for about 1.5 cycle of the maximum of the end of the rotation of the screws. If then the saw starts, then you can adjust it fine at higher revs (H), then at low (L). Have can be minimum screw that stops the chain.

Sep 01, 2011 | Poulan Wild Thing 2375 18" Gas Chain Saw...

1 Answer

PowerMac by McCulloch PM425AV-18 38cc. I have replaced the line from the fuel mixture tank to the primer bulb & replaced the primer bulb. Now the chainsaw won't keep or looses the prime. Now...

Are you sure you have conected the pipes the correct way round, the fuel hose from the tank with the filter on the end goes to the main fuel inlet on the carb, nearest to the alloy pump cover, the other conection off the carb goes to the shorter conection on the back of the primer, the longer pipe on the primer goes back to the tank, just remember the primer pulls fuel from the carb, into the bulb, and back to the tank.

May 15, 2011 | McCulloch 16 Inch Gas Chain Saw MCC1635AK

1 Answer

My Ryobi start great but when I change it from start to run stays few seconds and died

  • Alow the engine to run for longer on the start setting before you switch to run
  • Ensure air filter is clean. Foam elements can be washed with hot water and detergent. Paper elements can be cleaned with compressed air blown from the inside of the filter but ideally should be replaced.
  • Check fuel lines aren't kinked or blocked restricting fuel flow.
  • Ensure fuel filter isn't dirty. This is probably located at the end of the fuel line in the tank.
  • The fuel lines may have become airlocked.This can happen if the tank is run dry. If the trimmer has a primer bulb, alternatively press it several times and then try to pull start the engine with choke on. Repeat this several times. The primer bulb should feel spongy and fill with fuel.Once the engine kicks, switch to run.

Apr 05, 2011 | Ryobi Gas Hedge Trimmer

1 Answer

Modle 2075 Replaced fuel hoses now wont start, It has fuel and fire. What should I check now?

Was it running before the replacement of the fuel lines? Does the primer bulb fill with fuel when pumped? Did you replace the line inside the fuel tank? Check the fuel filter, air cleaner, and muffler for plugging. Hope this helps!

Nov 13, 2010 | Poulan P3416 16Inch 34cc 2Cycle Gas...

1 Answer

Saw is a 14 inch model 1950. Saw starts but won't run

Check the fuel filter, air filter and muffler for plugging. Make sure the carburetor fasteners are tight. Does the primer bulb fill with fuel after several pumps? Hope this helps!

May 12, 2010 | Poulan 14" Chainsaw

Not finding what you are looking for?
Husqvarna Chain Saw 20" Bar Logo

859 people viewed this question

Ask a Question

Usually answered in minutes!

Top Husqvarna Garden Experts

Phil Walker
Phil Walker

Level 3 Expert

608 Answers

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers

Roland W VanLue
Roland W VanLue

Level 3 Expert

486 Answers

Are you a Husqvarna Garden Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides