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Husqvarna 55 chain saw has no power. Runs and idles OK but when I put the blade to wood the chain quits turning. It doesn't sound like it rev's as high as it should. I took off the air filter and ran it. Same results with no air restrictions. There is a little gas that spits from the intake tube for the carb. I've fiddled with the ''H'' adjustment and its doesn't seem to make much difference in RPM's or power. Ant suggestions?

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WITH A SMALL SCREWDRIVER ,SCREW BOTH HIGH AND LOW ( H&L)SCREW IN TILL THEY BOTTOM OUT ,NOT HARD, BACK THE H SCREW OUT 1 1/4 TURNS AND THE L 1 1/8 OF A TURN START IT UP ,TAKE TO MAX REVS,PROBABLY BEST TO HOLD CHAIN BAR IN VICE SOTHE CHAIN RUNS FREE,THEN TURN THE H SCEW IN AND OUT UNTILL IT RUNS THE FASEST AND SWEETEST THEN BACK IT OFF 1/8 TH OF ATURN LET IT IDLE AND DO THE SAME WITH THE L SCREW,YOU MAY HAVE TO ADJUST YOUR IDLE SPEED NOW, BUT THEN YOU SHOULD BE RIGHT

Posted on Sep 26, 2009

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On the 55 chainsaw there is a small filter screen on the muffler that will restricte the flow of air out. Just remove the screw on the side of the saw , just behind the saftey pull bar. Then pull the metal plate out from the muffler that has the screen attached. Clean the screen off with a wire brush and carb cleaner or something similar. Then put back in, should help.

Posted on Jun 05, 2012

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What size file do i need for 55 husqvarne chain saw.the # on the chain is 21

Posted on Nov 20, 2010

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1 Answer

Hard starting


Good morning Marty.

I don't know your specific model, but have rarely seen a chainsaw that doesn't get persnickety at times.
You've been able to get it running, which means you have gas, a spark, and air. The next questions would then be:
  1. Are you running on gas that's been sitting for a long time? If so, get some new gas and mix the right amount of 2-stroke oil in, as recommended by your manual.
  2. Have you checked that you have bar oil? There's a second reservoir for the chain/bar lube oil. Make sure you're not dry there. If you are, you'll generate a lot of friction and heat between chain and bar, can gum up the chain with wood debris, and will start damaging your saw quickly.
  3. Can you rev the saw once started? If you can rev it to higher RPMs and get the chain to engage, (and hopefully be able to see a fine spray of oil coming off the far end of the blade), then the saw can run and cut. If you let off on the gas and it slows down and then dies, you likely need to adjust the idle. There will probably be an indent on the side of the saw with labels like 'Lo' and 'Hi' or 'Idle' 'Cut' or some such. Try turning the 'lo' screw a quarter turn, probably clockwise. Try starting / idling the saw and see if it sounds better or worse. If worse, undo the quarter turn and go a quarter turn the other way. Keep track of how many turns you do. If there's really no change, return the screw to the original position. if it improves, still keep track and then leave at a position where the idle runs acceptably.
  4. You could have a clogged fuel or air filter. Restricted fuel or air flow could make the ignition dodgy, and not enough to maintain idle at low RPMs. Cleaning or replacing the filter(s) may help. Chainsaws generate prodigious clouds of wood dust, and that can foul a filter, especially an air filter, really quickly.
  5. Fouled spark plug. likewise, lame spark can also make for lackluster ignition and inability to idle well. Pull the plug, examine it for fouling, and check that it's properly gapped. Clean, gap, and/or replace as seems prudent. See if that makes a difference.
Hoping this may help!

Nov 23, 2015 | Garden

1 Answer

Husqvarna 55 chainsaw has a problem running on idle


start by checking all ur fuel lines for holes then proceed to clean or rebuild ur carb the ethonal in fuel is cloging small engine carb jets and making needles stick so then adjust ur carb back to factory settings try with new air filter as well and run 89octane or higher in your two stroke motors u will c a great differance in performance

Dec 13, 2012 | Husqvarna Chain Saw Models 51, 55

1 Answer

Saw idles somewhat but bogs down and quits (no power) when using throttle


check fuel filter, fuel tank vent, air filter, main jets could be blocked, leak in the fuel line between carb and tank, diaphragms fatigued in carb.

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2 Answers

42cc 18 inch craftsman chainsaw model 358-351910-18. Saw runs great at idle or while not cutting wood, when starting to cut wood just after the entire bar gets into the wood engine bogs down and chain...


Generally this is a fuel / air ratio problem. Usually it can be solved by a carb adjustment. On the carb there are usually two screws, one marked low or L , the other marked high or H. Low is your adjustment for idle mixture, high is for mixture at full throttle. The saw should Always be adjusted to run well during the cut. Make adjustments a little at a time, then try The saw. Continue small adjustments untill the saw is performing well at full throttle while Cutting.

Aug 09, 2011 | Poulan Pro Chain Saw 46cc 20"

1 Answer

My 235 starts and idles fine. when you put it under a load the chain quits moving and the engine starts to bog down. pull it out of the wood and it revs. back up and chain starts to turn again. is it the...


The chain is driven by a gear.remove the cover of the chain,while the saw is idle,the chain is probably slipping off of the drive gear causing the chain to "lockdown",if this is your problem,that gear will have to be replaced.Any small engine repair shop in your neighborhood can perform this task for you.

Feb 12, 2011 | Husqvarna "Chain Saw - 16" Bar, 3 Hp

1 Answer

The chain saw runs okay until i start to cut wood on higher revs then it cuts ouy


Does it run O.K. with high revs. with no load, but dies when you start to cut (load) ? If that is the case your carb. needs to be adjusted and that is difficult to put into words. Without knowing what make of carb you have because they can change from year to year, and also depends on the model. Without knowing make of carb I suggest you try to turn the L (low) and H (high) needles in (clockwise) until they are lightly seated so you don't damage the needle or seat. Now turn them both out (counterclockwise) one turn as a start. Start your saw to let it warm up now rev it up it should not hesitate or run rough while reving up. If it does turn low needle out 1/4 turn or more if needed until it does not hesitate. (turning any needle out will let in more gas turning in less gas) If you get this far good idling and reving up, now adjust high needle the same way. With high needle you can also try turning it in. keep on adjusting needles in or out in small increments until it runs right. If you cannot get it running right after all this, you probably need a carb overhaul, just a cleaning or carb kit if diaphrams are stiff or damaged. I hope this helps you. Please forgive grammar errors. Let me know how you made out.

Dec 01, 2010 | Husqvarna "Chain Saw - 16" Bar, 3 Hp

1 Answer

Husqvana 65 chain saw will rev fully when idle but dies when introduced to timber


Sounds like the saw is running lean. Check the fuel filter, air cleaner and muffler for plugging. Check the condition of the fuel lines and that the fasteners on the carburetor are tight. If all ok, turn the 'L' and 'H' jet needles on the carburetor CW to stops (lightly), then back out each 1-1/2 turns CCW. This is a basic setting and the engine should start and run. Allow the engine to warm up, pull the throttle full on, and adjust H CW until the engine starts to speed up, but continues to 4-stroke. Proper adjustment is when the engine 4-strokes, but immediately 2-strokes when cutting. This produces the most power and least heat. Allow to idle and adjust L CW until the engine runs fairly well, yet will allow it to 'follow the throttle'. Set the idle speed screw til the chain stops moving, but keeps the engine running. Hope this helps!

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1 Answer

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Sounds like dirty carberator or carb needs adjustment. How is the spark plug?

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2 Answers

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There are two idle screws one high, and one low. Your high adjustment idle screw needs to be adjusted.

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