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Husky 576xp will idle and rev to about half throttle fine but will not rev above half throttle with out dieing

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Posted on Jan 02, 2017

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SOURCE: i have a husky 455 rancher.never had a problem

When this has happened to me, it turned out to be a hole or crack in the fuel line. At the higher revs, more fuel is needed. The added "suction" for the higher demand pulls air into the line and the unit does not have enough fuel to run. Check for that first and also the fuel filter inside the tank. The filter might be clogged as well.

Keep us posted,
Dan

Posted on May 11, 2010

Testimonial: "got some very usefull stuff off ur reply, i did'nt know u could cx the fuel filter. Turns out my prob was actually a bad batch of fuel, but your reply gave me many options if it happens again in future. thanks for you time."

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SOURCE: chainsaw dies at full throttle, idles fine and

hi

check the fuel filter,clean the gas tank,the carburator ,check the fuel pump(not to be tired).the fine filter inside the carb under the fuel pumpand the sparkplug.

by for now savumihai71

Posted on Oct 30, 2010

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1 Answer

Need instruction on how to adjust carberator


Adjusting carbs on chainsaws is not to be taken on lightly, there will normally be three screws, an L screw, an H screw, and an idle scre, the L screw will increase the fuel mixture from idle to half throttle ( they are fuel screws not air screws ) the H screw will adjust from half throttle to maximum revs, start with a base setting of between one turn and one and a half turns out, start the saw and warm through, allow it to idle, if need be increase the idle screw to get an idle, turn the L screw in slowley, the revs will increase as the mixture leans off, it will reach a point where it starts to die, now back it off a quarter of a turn, blip the throttle, the saw should pick up clean, if it has a flat spot increase the L screw slightley, now set the idle so it idles without the chain moving on the bar, now screw the H screw in to get full revs, be aware this should be set with an engine rev counter, do not exceed the manufacturersmax revs, hobby saws normally run at about 12500 rpm with an idle speed of 3000 rpm.

Oct 26, 2011 | Garden

1 Answer

Coleman Powermate 1000 Starts fine then revs up and dies


Hi, I just pulled out my Coleman Generator (1000) and it actually started then died. Has been sitting for about 10 months. I ran it out of fuel before putting away. Anyways, it starts for a minute than dies. If I press fuel primer it keeps running but than it dies. So, I took the cover off, the one towards exhaust side and was able to see carburetor. There are two screws with springs on them. I guess these screws control fuel and air for carburetor(you can clearly see they are on carb). As stated above there are not many adjustments. There is no choke for the model I have; just an on and off switch and fuel prime button. The instructions say fuel it up (with the right oil/petrol mix of coarse), switch it to "on", prime it, pull starter cord and then that's it......"not happening". Okay, so I took my little flat head screwdriver and backed out each screw while counting how many times I turned, until I was able to remove completely(PLEASE remove one at a time and take note which one went where AND how many times you backed out). Take a can of carb cleaner with the straw and shoot through the holes where the screws came out of. I shot carb cleaner a couple pumps in each hole. Examine each of screws removed as these have pointed ends(replace if damaged). Put screws back; again make sure you count how many turns. This worked for me. Idles perfect. Thanks!

May 14, 2010 | Coleman Electrical Supplies

1 Answer

I have a husky 455 rancher.never had a problem till today, worked fine this morning, now it iwll start but as soon as i put it under load it dies, cannot even rev the engine, it idles ok, but once i open...


When this has happened to me, it turned out to be a hole or crack in the fuel line. At the higher revs, more fuel is needed. The added "suction" for the higher demand pulls air into the line and the unit does not have enough fuel to run. Check for that first and also the fuel filter inside the tank. The filter might be clogged as well.

Keep us posted,
Dan

May 11, 2010 | Husqvarna , No.455 Rancher, 20" Gas -...

1 Answer

My hUSKI 395 is stalling when i pull the throttle wont rev


So, it idles ok but when you go for any extra throttle it dies?

Your carb may have a blocked main jet. You can removed your carb and after taking off the top and bottom diaphragms remove the main jet and blow through it with a splash of gas *(no carb cleaner! Some carbs are coated and carb cleaner can strip off this coating. Ruining the carb)
Use compressed air to help clear out the main jet passage and reassemble. Be sure you know how many turns your carb main jet needs to be set at before you remove it! Usually its 1-1/2 turns.

You should check online for a Husky website that may have additional guidance.

Good luck and be careful.

Dec 29, 2009 | Husqvarna Garden

1 Answer

25 yr old Husqvarna 266. starts fine, lots power, but won't idle.


I think you have exceded our level of help. Please try here.
ArboristSite.com Chainsaw thread (free to join)
http://www.arboristsite.com/forumdisplay.php?f=9

You might read this thread
http://www.arboristsite.com/showthread.php?t=110858&highlight=husky+266
I searched for "Husky 266" and got many positive hits. She is a respected machine.
http://www.acresinternet.com/cscc.nsf/ed1d619968136da688256af40002b8f7/9f5525102886abf488256b52001a33af?OpenDocument
HTH
Lou

Oct 16, 2009 | Husqvarna Garden

1 Answer

Wont idle properly.


vacuum leak.....get some carb cleaner an when you can get the bike to idle somewhat normal spray around hoses and intake manifolds...if idle increases that where the problem is.

Oct 08, 2009 | kawasaki GPX 250 R Motorcycles

1 Answer

Husky 455 dies out at full throttle or under load


Your carb may be the issue but your ignition coil could be the culprit. Once they start going bad, they can act up intermittently or give various symptoms from day to day. The fact that your saw dies at full load or under load, probably means that when your saw gets hot or requires more spark, your coil is not able to provide it. Your carb is easy enough to clean out, you can take it all apart and clean all screens, etc....

I just replaced my coil due to the exact same symptoms and now my saw runs great. $60 off ebay and you can put it on in 15 minutes yourself. Check your carb first though

Apr 13, 2009 | Husqvarna , No.455 Rancher, 20" Gas -...

1 Answer

Husky 350 chainsaw idle to high


First there is an throttle idle screw that adjust the amount of throttle at idle try turning it ccw until it idles down. If this adj is at its lowest level then adjust the L screw until you get the idle you want. Then try to rev up it should rev up without hesitation if not hold down on throttle untill you get max rpm it it tries to cut out etc. at high rpm adj. the H screw until you get max rpm. then adj your L screw again for proper idle. You may need to do this back and forth for awhile until you get max. performance.

Apr 10, 2009 | Husqvarna Garden

4 Answers

Yumbo motor scooter


Hi and welcome to FixYa,

Appreciate the direct "Ask Me".

Initially, pls confirm that it uses a two-stroke 50CC engine. Additionally, your description "It refuses to rev beyond idle speeds." could indicate several conditions:
  • throttle up above idle speed, engine stalls/dies - fuel related issue, fuel starvation, clogged jets, nozzles, too much 2T oil, contaminated fuel (water). Basically a carb rebuilt;
  • throttle up above idle speed, no change in engine RPM - mechanical problem, possible broken accelerator/throttle cable, stuck plunger in carb, detached needle valve;
  • throttle up above idle speed, engine backfires/dies - electrical issue, check CDI, stators, trigger/pulse, their physical state/mounting, electrical connections;
  • throttle up above idle speed, engine hesitates/flat spot - air/vacuum issue, check rubber coupling from carb to intake manifold, blocked or absent air filter.
Good luck and Thank you for using FixYa.

Pls be informed that due to my current rank and rating, even a Helpful would be detrimental to my status. Should this solution not address your concern, it would be appreciated if you could just not rate it at all. Cheers.

Dec 28, 2008 | 2004 Yumbo Dakar 200

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