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I have a Husqvarna 435.Hard to start.When it runs, it has no power.It does the same as if it runs out of gas.I loosen the gas tank plug, then it starts and I'm good for 10 minutes.I also have a Husqvarna 345.Runs like a charm.I think this 435 is junk.Where is the breather ?

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  • 645 Answers

Sounds like the fuel cap on the 435 is not venting properly. Change the fuel cap and do not overtighten. Should correct your issue. The 435 is a nice light weight unit.

Posted on Feb 03, 2016


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Posted on Jan 02, 2017

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SOURCE: Husqvarna 345 power loss and vibrates

Replace the bar. Your bar has gone bad and that is why you are losing power. Bars are made by the chain saws to be completely oiled at all times. When the bar does not get oil the bar will start to warp and that is what will cause you lack of power when trying to due a top cut

Posted on Feb 16, 2009

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SOURCE: husqvarna chainsaw stops when using it

Check for spark after it quits. If none, the ignition module may be dying when hot. If ok, check the muffler for plugging. Use compressed air to remove sawdust from cylinder and head area. If everything looks good, note whether the spark plug is getting wet with fuel after trying to restart the saw. If dry, check the fuel lines for cracking or other deterioration. Make sure the fuel tank vent is clear of debris. (Loosen the fuel cap for a moment, then see if it will start.) Hopefully, one of these suggestions will hit on the problem!

Posted on Feb 20, 2010

  • 2220 Answers

SOURCE: my Chainsaw Husqvarna 345, won't start. With

I hope 2 different problems Marvin. I think the starter is most important, after you reply with findings we will take on the likely fuel delivery problem. Please do this and post back (below) with what you find.

Starter Handle difficult to pull:
1. Remove the starter cover. Does the starter operate smoothly? If yes, reinstall the cover and continue with 2, if not repair the starter.
2. Is the saw equipped with a decompression valve? Yes continue, no proceed with 3.
· Leave the ignition off, set the valve and pull the starter.
· Pull gently to release the valve. Is there a difference in the effort required?
· If yes continue with 3, if no repair or replace the decompression valve.
3. Was this saw perhaps operated in a lean condition (metal transfer from the piston to cylinder wall)? This may be caused by many things including but not limited to; leaky intake connections at the engine or carburetor; leaky crankcase seals; cracked fuel delivery lines; running on gasoline containing no 2-cycle oil.
· Disconnect the spark plug wire and remove the plug. Remove the muffler (clean it and the spark arrestor before reinstalling), hold a light at the plug hole and inspect the cylinder through the exhaust port. Is it smooth and shiny or does it appear speckled with dull gray spots or smears?
· Pull the starter slowly, inspect the piston as it rises and falls. Is it a dull gray without scratches and gouges?
· Hold the light at the exhaust port and look through the spark plug hole, inspect the cylinder above the exhaust port. Is it shiny and smooth or speckled with gray spots or smears?
Please Note: Any spots or smears on the cylinder or deep scratches and gouges in the piston indicate the saw was operated in a lean condition. Repair of this on a home owner quality saw often exceeds replacement cost. A repair estimate by an independent saw shop should be considered.
4. The last likely possibility is the saw has jumped timing. Inspect the flywheel and crankshaft under the starter cover. Are the woodruff key slots aligned and the key intact? Please take it to a good local saw seller/mechanic for a written diagnosis before authorizing any repair.

If you have more questions or need additional help please reply below and I will get back to you. Thank you for using FixYa and Good Luck. HTH
Starter fluid removes what little lubrication is provided by the fuel mix. I suggest a teaspoon of mix into open carburetor throat or the plug hole. Do not go to speed with the air filter removed.

Posted on Mar 29, 2010

Testimonial: "I think this is excellent advice. Thankyou very much"

  • 37 Answers

SOURCE: husqvarna 150 bt leaf blower.

if your gas oil mixture is right then try buying different gas the ethanol in gas is ruining all small gas motors!

Posted on Oct 02, 2010

Testimonial: "thanks for your answer. I tried new gas, oil mix with 97 octane, helped some, "

  • 577 Answers

SOURCE: Husqvarna 455 Rancher loses power,

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

Posted on May 03, 2011

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Good thought obwhon.
When it starts to act up loosen the fuel cap. If it performs normally you have a plugged fuel vent, wherever it is located. HTH

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