Question about Husqvarna Chain Saw 20" Bar

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Husqvarna 20" 359 wont start. Has spark. the gas and oil were mixed and left in a plastic vented can in the hot sun. came back a day later and half the mixture evaported. Could the gas have evaporated and left a greater oil to gas ratio. checked the part of the fuel line by the carb and fuel was running from the tank

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You are correct. Too high a fuel to oil ratio will not asallow the engine to run. Try using a fresh mixture of the correct ratio. It may take a lot of pulls on the starter until the old fuel is purged from the carby.

Posted on Aug 24, 2010

  • Daniel Arellano Apr 21, 2014

    Just empty the old gas and fill it up with new gas. A day old is not that bad. I was a log cutter for many years and that never happened to me.

  • Daniel Arellano Apr 21, 2014

    Add a CommentJust clean out the gas tank , filter in the gas tank and go from there up to the carb. dip the spark plug in gas and pull. If it starts or tries to start, then you need to set the choke and pull until it starts up a bit. Then you take off the choke and start it . If it does not even try, you are not getting any gas to the carb. Which could be something else.Try cleaning everything with starting fluid.

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Looks like oil and fuel is leaking or blowing from exhaust.


John - Husqvarna makes really good power equipment that seldom offers trouble. The unit you are talking about is a 2 cycle system, meaning you mix oil and gas together in lieu of having an oil sump at the bottom of the engine like 4 cycle motors have. First question, did you mix a bottle of One Mix 2 cycle oil to a gallon of regular gas to start off using your machine? If you did, then I would think your unit is badly flooded, which happens a lot with 2 cycle equipment. Try taking out the spark plug and see if the spark plug looks wet from too much fuel. If it is, leave the spark plug out for a day or so to allow the cylinder head to vent the gas fumes. Replace the wet spark plug with a new one and try to start the unit again. Here's a tip: If you do flood a 2 cycle piece of equipment (trimmer, chainsaw, blower, etc.) again, make sure the choke is off and hold the throttle trigger wide open. Pull the started cord several times until the unit starts to run. Keep holding the throttle wide open until it clears itself out. Remember, you run the equipment, it does not run you :-)

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Gas/oil dripping out of small weep type hole on the bottom of left outer exhaust pipe,and left cylinder not very hot thanks Help


Hi Lucien, sounds like you have a faulty spark plug, for more information about your question please visit the website below. Good luck and have a nice day.
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1 Answer

What should I do with my husqvarna 130BT because I put in too much oil with the gas and it won't start?


First, you need to dump all of the fuel out of the gas tank, Preferrably into a gas container. If you know how much oil you dumped in, you can calculate how much more gas to add. You could also just dump the gas, re-mix some new gas and oil, whichever you prefer.

If you are comfortable doing this, remove the fuel lines going to the carberator and let them drain into a pan. Pump the fuel primer to purge the gas out of the carburator, and then re-install the fuel lines. This might help you get it started a little faster, but its not necessary. You can burn the old gas in the engine at it will be fine.

Next, remove and replace the spark plug. Its probably fowled out with too much oil. Keep a can of carb cleaner and a small wire brush handy, you may need to clean the spark plug a couple times. If it gets too dirty, you can replace the spark plug with a new one. Do not burn Carb Cleaner in your engine for long periods of time, it will damage the engine.

After you have installed the spark plug and put some correctly mixed gas in the tank, Try to start the engine again. There will be some residual fuel in the fuel lines going to the carberator, so you will need to burn off that gas.

If you can't get it to start, try these steps:
Choke off, throttle wide open, crank several times. (or let it sit in the sun for a couple hours) (this corrects flooding)
Prime carberatur, Choke full on, throddle idle position, crank until it fires once but does not start.
Choke half, crank until it fires again or starts.
If it starts skip this step: (Choke off, crank until it starts).
Keep the choke on half for about 10 seconds and let it idle.
Put the choke off and let the engine warm up for a couple minutes.
After warmup, test the throttle to see if it will run at full throttle (it may take some fluttering until the engine is fully warmed up)

Let the engine run at full throttle for a few minutes. The exhaust may be a little more blue-smokey than normal...this is the excess oil burning...totally normal and harmless.

Mar 25, 2012 | Husqvarna Garden

1 Answer

My husqvarna 128ld starts and idles fast but only with the choke half on. Give it gas or take the choke off and it dies.


Possibly a fuel starvation issue, incorrect fuel air mix or an air leak within the fuel system

Nov 25, 2011 | Husqvarna Garden

1 Answer

Husqvarna 455 Rancher loses power, have tried the following: fresh premium gas with ams oil 2 cycle oil, new plug, cleaned air filter, runs for a little while but starts stalling out after using about a...


check your fuel filter/gas line in tank you could have a crack in your line that in the fuel till it gets below half tank then sucks air through crack, It's a possibility, other than that, check your exhaust port, but sounds like a fuel problem check your fuel tank vent also to make sure it is venting. Good Luck

May 03, 2011 | Husqvarna Garden

1 Answer

Husqvarna 350 has spark and fuel wont start just quit running while in use


1- Is the mix (gas & oil) right? If its 2-cycle,check the manual.
2- Is the choke set?
hope this helps

Jan 06, 2011 | Husqvarna 350 18 Inch Gas Chainsaw 52CC...

1 Answer

I need to know what the gas/oil mixture should be for this chainsaw as to the ratio of oil to gas.


Husqvarna engines are made to tighter tolerances and are designed to run cooler. This is why the manufacturer recommends running a 50:1 mix. A richer mix of oil (such as 40:1) will run in the trimmer, but it will make alot of smoke, foul the spark plug, and clog the spark arrestor in a short period of time.

I recommend you stick with the 50:1 mix, and use Husqvarna, Stihl, or Echo 2 cycle mix.

Oct 25, 2010 | Husqvarna Chain Saw 20" Bar

1 Answer

Wont run hard start, run for five min or less then wont start


Many chainsaws have the fuel tank mounted very close to the engine cylinder. In the process of filling the tank over and over a lot of mixed gas is spilled and some of it runs down on the cylinder head. Being mixed gas and having oil in it, it leaves an oily residue. This oil will seem to collect a massive amount of sawdust over time. The sawdust coating the cylinder causes it not to cool down really well and the increased heat can cause the fuel in the tank to boil if it's bad enough. If the vent in the fuel cap is plugged and the gas in the tank gets hot it tends to pressurize the gas tank. This can cause the saw to flood out or load up.

Change the gas cap or clean out the vent filter. If you can get to the cylinder clean all excess oily sawdust from the cooling fins.
If you get the saw running your probably should readjust the mixture settings.

You need to set the mixtures for the carburetor. You will find a Low and High adjustment screw. At idle turn the screw in or clockwise until the rps starts to decrease. Then start turning it out till you hit max idle rpms. Turn screw back in a quarter to half turn and it should be idling smoothly. Be careful here and get someone to hold saw if necessary but hold in throttle to full speed and do the same with high adjustment screw. turn it in till rpm starts to drop then back it out until you get to max rpm and it won't go any higher then turn it back in a half a turn.

Sep 12, 2009 | Poulan Pro Chain Saw 46cc 20"

1 Answer

My chainsaw wont run at full speed


Dump the gas and start over, pour some chem-tool in the tank slosh it around for a wile and dump it out, then refill your saw with NEW PREMIUM GAS and NEW OIL mixed at the correct ratio, it will take a few minutes to get the old fuel out of the line but then it will run like new, Gas and oil goes bad faster these days as oil company's no longer put in as much if any stableizer's

Feb 20, 2009 | Husqvarna Garden

2 Answers

Cord won't pull out


Hi Shaun77b,

Regretfully if you didn't use a gas/oil mix the motor is probably seized. The internal parts on a 2 cycle motor are lubricated by the oil in the gas. It may keep running without oil but once it shuts off- its done.


Sorry, Phil

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