Question about Husqvarna "Chain Saw - 16" Bar, 3 Hp

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The chain saw won't start when it is hot

After cutting wood and there is a need to add fuel and oil. The saw is refueled but will not start back up.

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Remove the spark plug to check for spark when it doesn't run. If spark is blue and snappy, pour a little fuel mix into the plug hole, replace the plug, and try to start. If you get a few pops, then concentrate on the fuel system. Check the fuel filter, air cleaner and muffler for any plugging. Check the condition of the fuel lines. Make sure the carburetor fasteners are tight including the ones holding the carburetor to the cylinder. Make sure that you are using fresh fuel with modern synthetic saw oil mixed at 50:1 ratio. Premix the two in it's own can and shake vigorously before filling the saw. If still having a problem, disassemble the carburetor, clean, and re-kit if necessary. Pay particular attention to the lower chamber diaphragm and the fuel metering valve that it controls. Go to: for a 12 page article on Walbro brand carburetors for great theory and troubleshooting information. Hope this helps!

Posted on Jun 12, 2010

  • drallim Jun 12, 2010

    If you got no spark at the plug in the first test, remove the flywheel cover and remove the ignition switch wire from the ignition module. Repeat the spark test. If still nothing, replace the ignition module which is failing with engine heat. Use a thin business card for a module gap, turn the flywheel magnets under the new module, loosen the mounting screws and allow the module to contact the magnets through the card--then re-tighten the mounting screws. Turn the flywheel to remove the card, the turn the flywheel one full turn while watching the module gap--it should not close up at any point. Attach the ignition switch wire. Recheck for spark. Good luck!



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3 Answers

I'm asking about a chain saw not leaf blower do you need to mix oil and gas together and how much for a chain saw

Google search your manufacturer make and model and the word
manual. If one is available, you can find it in the search

Mar 24, 2015 | Garden

1 Answer


in severe cuting duty clean the air filter every other time you refuel. at the end of every day inspect and clean the bar groove(sediment can fill these up causing oil to not reach the chain and tip) file burs off the bar( these can make the bar larger then the cut your chain makes therefore making it harder to pass through a log however be sure to not roll the edge with your file) and ensure your roller tip if equiped spins freely. next clean sawdust buildup from under the side cover and ensure the oiler journals are free of debris. remove your sprocket and chekk for wear, in most models you can flip the sprocket once one side starts becoming worn, next remove the clutch shoe (make sure chain brake is off) and clean buildup off inside be sure not to scratch to surface. finally remove the bearing and grease with white lithium bearing grease and re assemble the saw. in sever cutting conditions this should all be done daily. if your only cutting firewood a few days out of the year then once after each project should be enough. finally once a year you should inspect and replace if necesary you fuel and oil filters, if you have an adjustable oil system you can test your oiler by running the saw at max chain speed with the tip a few inches from a piece of wood if the chain slings a line of oil down then your oiling plenty. you can also pay attention to how much oil you saw goes through, it should need filled every time the gas does. if your chain is amking a whinning noise then either your not oiling enough or your chain is way to tight so pay attention to this as well

Jan 22, 2014 | Garden

1 Answer

Ryobi pcn 4040 chainsaw won't start What is the

1st add fuel/oil mix to fuel tank , then top off oil tank with bar oil , place saw down on flat surface , press 'ON" button above trigger handle to ON (its marked on case) then pull out blue choke handle till it clicks and stays out , press primer bulb with thumb 8 to 10 times bulb will become harder to press as it fills carb , push chain brake forward (on) ` place left hand on top of saw and right hand on start cord , hold saw down firmly and pull cord vigorsly several times till it sort of starts (sound) , squeeze trigger in and pull cord once more , saw should take off running , chain wont move ,walk to wood pile then disengage the chain brake and cut wood , if saw fails to start after this procedure then there must be a fault in saw , consult a exp small engine dealer for repairs

Sep 01, 2013 | Ryobi 18-inch Electric Chainsaw Chain Saws

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Chainsaw runs 1 minute then suddenly stops. Won't restart until cooled down. Cleaned carb & fuel pick-up also changed plug.

A number of reasons for this, poor quaility fuel causing vapour lock, over heating due to starter cover vents blocked,cylinder fins clogged, running too lean on the carb mixture settings, fuel tank breather clogged ( slacken off fuel cap when it starts to die, if it picks up again, replace tank breather, or ignition unit breaking down when hot ( only cure is to replace the unit )

Oct 11, 2011 | Garden

2 Answers

What are the steps to getting the chain saw started and idling? What are next steps to cut tree limbs and oil the chain? This chain saw was given to me without a manual.

If you are a complete novice you should seek some training before attempting to use the machine, as you do not say what model this is we will go through basic starting procedures, fill the fuel tank with fresh fuel mixed with two stroke oil at 25-1, fill the chain oil tank with a non fling chain oil, switch the ignition switch to on, pull the choke fully out, push in the deco valve if fitted, place the machine on the ground, with the tip of the bar away from any obstructions, put your right foot through the back handle to hold the saw down, place your straightened left arm and hand onto the top handle again to hold the machine, now with your right hand crank the engine until it fires once, at this point push the choke fully back in, crank the engine once again until it fires up, flick the trigger to dissengage the part throttle , the machine should now idle.
Be carefull.

Jun 05, 2011 | Poulan Garden

1 Answer

Saw runs great, however when cutting;the kerf goes to the left.Replaced the chain recently and it cut fine for a few cuts then started the same problem. Could it be the bar grove is worn and needs...

You probably have a warped bar. Remove side cover and chain, then remove and reverse bar ( move the top to the bottom ) . Pour bar and chain oil on the tip of your bar and spin gear inside with a flat screwdriver to allow oil total penetration. re - install chain and side cover, adjust chain and tighten cover.Make sure you keep the oil reservoir full - refill everytime you add fuel. When it starts cutting crooked just reverse the bar again.

Nov 09, 2010 | Husqvarna "Chain Saw - 16" Bar, 3 Hp

3 Answers

Chainsaw seems to be burning the wood?

If the chain is oriented as the lower portion of the photo it is dull.
Chain sharpening is an art, if not correct it will not cut straight. I suggest you consider having it done professionally ($10± for 20" chain).

If you have more questions or need additional help please reply below and I will get back to you. HTH & Good Luck.
Thank You for using FixYa.

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Starts ok when cold. acts like it's out of fuel when hot.

Clean or change the sparkplug. Also make sure you have fresh gas and the proper fuel mix.

Jul 23, 2009 | Poulan Pro 42CC 2 Cycle Chainsaw, 18"

1 Answer

Bad Clutch??


Before other checking change the spring of the clutch(2).

best regards savumihai71

Feb 14, 2009 | Husqvarna "Chain Saw - 16" Bar, 3 Hp

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