Question about Husqvarna Chain Saw 20" Bar

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Chainsaw runs only with the choke on. 3yr old but used by a home owner in a very light frequency

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Your Idle and Hi speed jets are out of adjustment. If you look near the carborator you should see two, they usually brass screws. There should be markings by them one HI and the other Low for high speed and idel jet adjustment. You adjust the high speed jet for best running and power while sawing, then you adjust low speed for best idle. This needs to be done occasionally. Or take it in to a service shop. It is best if you learn to do it as from time to time it will be needed. When I was in my late teens I was a logger and these adjustments would need to be done 5 or 6 times a day.

Posted on Oct 08, 2009

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It is running lean. If you did nothing to the carburetor and the fuel mix is the same investigate why!!! Look closely at fuel tittings and any bends in teh fuel lines. HTH
Lou

Posted on Oct 08, 2009

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1 Answer

My jonstred chain saw has no choke lever


Ian Duncan...

I have no idea if you are bragging or complaining...

I WILL TELL YOU ... I have started many many a chain saw... and the chokes are nearly useless...

FIRST RULE: always use only fresh fuel...!!

Proper sequence for an ice cold saw (optimal adjustment)...
- squish the fuel bulb a couple of times
- set the choke
- couple of yanks until it coughs...
- completely release the choke and the next yank will get you running

If you have NO CHOKE... JUST leave the THROTTLE ALONE
until it coughs... Then start juicing the throttle...

What's a jonstred? Oh... Jonsered

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How to fix the choke on homlite 38 cc 16 inch gas chain saw


More than likely, your choke became disconnected. I have attached a link from YouTube of a video on this.
There are many useful video's on fixing chainsaws, from simple fixes such as reattaching a choke lever, to complete tear down and rebuilds.
I hope this helps you get back up and running.
Short video on fixing chain saw choke

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Partner 500 fuel mix


This is a fairly old saw now, so i ould run it at a 25-1 fuel oil mix, be sure to use proper two stroke oil designed for use in chainsaws.

Oct 29, 2012 | Garden

1 Answer

I have a 14" Woodshark Poulan chainsaw. I put in


Poulan Chainsaws are pretty well all powered by two stroke engines. My best guess is that you have the fuel mixture incorrect (it should be a 1:40 ratio of oil to gas). if the fuel mixture is not the problem then your choke is messed up. If you haven't tried already try and find the sweet spot in the choke where it will run.

Mar 04, 2011 | Poulan 14" Chainsaw

1 Answer

Run on choke but willnot run when choke is off


U need to clean the carburator and empty old fuel out of tank 2 cycle gas gums up over time clogging ports in carburator also check fuel filter

Dec 11, 2010 | Homelite Garden

1 Answer

Hello there, I have a top of the line echo trimmer from home depot... 2 years old.. when I start it up it runs for 20 seconds then chokes and dies.. it keeps running as long as I keep giving it fuel.....


Check the fuel filter for plugging (in the tank). Check the fuel lines for decay or other damage. Make sure the carburetor fasteners are tight. Hope this helps!

Aug 14, 2010 | Garden

1 Answer

Echo CS-440 Chainsaw. Was cutting firewood, saw running fine until I refilled the gas tank. The gas was a few months old but looked clean and smelled OK. But after I filled the tank could not get the...


unleaded fuel is notorious for going stale,and it can leave a resinous coating in the carb-try running the saw on half choke with new gas and less oil eg 50 to 1 for say ten minutes,this should clear the gunk out-if this does not work,you have two choices-strip and clean the carb,or adjust the H (high) scew on the carb anti-clockwise by a quarter turn a time till it revs out full bore-good idea to remove the chain and wear ear defenders when adjusting-and always use a chainsaw at its max rpm,or you run the risk of "kickback"

Feb 25, 2010 | Echo 30.1CC Chainsaw With a 14 In.bar and...

1 Answer

Choke when warm


The old gas might have done the unit in!
Stale fuel is MUCH more susceptible to pre-ignition and detonation and could possibly have ruined the rings/piston/cylinder.
The symptom you describe is, without a doubt, an engine suffering from fuel starvation.
The quick and easy check? Set the unit on the ground and grab the starter rope and try to pick the saw up using only the rope handle. Good compression should support the weight of the saw.
If it fails that test, pull the muffler off and check the piston/rings/walls for scoring. If it looks ugly, it's cooked.
If not, go back to the fuel supply. Fuel lines are especially suspect when old gas has contacted them. Lightly pressurizing the fuel line and flexing it might reveal tiny holes and/or cracks that would cause a starvation condition. Check fuel filter while you're in there!
Finally, open the carb and check the inlet screen directly opposite of the inlet needle. Hold it up to light to VERIFY that it isn't swollen shut. (Another problem caused by stale fuel.) Check that the diapragm is soft and pliable and has no holes.

Hope this helps,
Dolf-

Oct 12, 2009 | Garden

4 Answers

Ryobi pcn 4040 chain saw


I have the same model chainsaw with the same fault. The brake is not releasing when the brake handle is pulled right back. I can only run mine if the brake handle is pulled back to the main handle with a tyrap - defeats the object of the auto-brake completely. Design fault I reckon.

Sep 28, 2008 | Ryobi 18-inch Electric Chainsaw Chain Saws

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