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My chainsaw is idling high

Tried to find a way to set idle checked air filter all clean oil good and fuel....chain continues to spin when not in use when engine running!!

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  • 23 Answers

Several reasons for that,
1. Air is getting into saw through leak in manifold
2. Carb idle/rev screw is set too high
3. Carb idle mixture screw is set too weak (uscrew it a tiny bit and check) See my other answer link below for advice on that:
4. Fuel filter in tank is partly blocked reducing fuel flow. They should be changed once a year on a domestic saw, more often on a professional saw.
5. The springs on the clutch are weak allowing it to engage at too low a speed.
Carburetor adjustment for efco 152 chainsaw

Posted on Dec 13, 2014

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Posted on Jan 02, 2017

  • 211 Answers

SOURCE: husqvarna chain saw stalls

hi charlier 421

I think the small holes from the Venturi wall of the carb are clogged.To clean them you need carb disassembly.Near the needle there is a tehnological cover,under the diafragm(fuel pump).Taking off it you will see some small holes maiking conection with Venturi wall.Used ompresed air to clean them.
best wishes savumihai71

Posted on Dec 01, 2008

  • 211 Answers

SOURCE: idle is off??

hi leobowdy

disassembly the carb and carefully clean it.Check the air filter,the fuel line and fuel filter,check the needle,lever,small spring and the screen filter from the carb.Check the sparkplug.
high speed H=2 turns,low speed L=2 1/2 turns,adjust T
When chain saw starts adjust H,L and T accordingly.

cheers savumihai71.

Posted on Dec 03, 2008

  • 16 Answers

SOURCE: my 345 chainsaw bogs down when it hits wood

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

Posted on Jan 19, 2009

slohry
  • 87 Answers

SOURCE: Engine wont run.Stihl 028 chainsaw.

Remove and clean the exhaust port, muffler and spark arrestor screen. Also clean the air filter.

Posted on Apr 09, 2009

petersfan761
  • 92 Answers

SOURCE: engine stalls after acceleration

Sounds like its not "un-choking" it self, that its running like its still choked like you wold at initial start up.

Disassemble it and see if u can pysically see the activation and deactivation of the choke when u apply them.

While u are at it, also make sure:

Gas is fresh?

MIx is right?

Plug is good?

Chain brake mechanism is released.?

Good luck.

Posted on Oct 05, 2009

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1 Answer

Why does saw die after running for a few minutes.


Well, if it is you lucky day it is a plugged vent to the fuel tank!! Loosen the fuel tank cap and see if unit will continue to run with out a problem. If the vent is plugged after a few minutes as the fuel leaves the tank a vacuum is created and prevents the fuel from entering the carburetor.
chainsaw fuel tank vent line repair

If not so lucky it can be the ignition coil that fails when it gets hot!
Chainsaw Ignition Coil Test

One other possibility is that the chain gets tight on the bar when hot. Check tension and oilier. Manually oil just to check it out.

Last item can be fuel/oil mix!! If confusion or what ever has no oil in the mix the piston gets tight against the cylinder creating excessive friction stalling the engine and potential engine damage!!

Feb 27, 2016 | Garden

1 Answer

Craftsman chainsaw will not keep running


Most saws will have a high, low and idle screw adjustments.

First make sure we are dealing with a clean air filter, clean with air or tap air filter and brush to remove saw dust. Replace fuel if it is a season old or older. (Fuel filter replacement if it has seen years of use.)
2nd GENTLY turn the high screw clock wise until it bottoms out and then counter clock wise 1 and a quarter turns.
3rd do the same for the low idle.

It should run and idle at this point, let it warm up before making final adjustments. If it dies when giving it gas then more than likely it will need further adjustment on the low idle screw.

If it is really stubborn, often times the the ports are full of sludge from the bad fuel. I prefer to remove the bar and chain especially for the novice. Start the saw, secure with another set of hands if need be, turn the idle screw in to quicken the speed a little. Now you can work the low and high screws back and forth 1/4 turn while the saw is running, periodically giving it full throttle. That should be enough to dislodge buildup replace bar and chain and then your final adjustment.

If not you may have to look else where as in an air leak.

Good luck and be careful!
jeromekj

Dec 29, 2013 | Craftsman Garden

1 Answer

My e series 142 spins the chain and idles insanely fast when I have the choke pulled out. Then when I give it throttle it calms down and then I can barely keep it idling. with throttle all the way pulled...


Check air filter- clean or replace, Make sure you have fresh fuel, A new spark while you are giving it a service, Do you know how to tune the saw? Start with basic settings 1 turn on the low and 1 turn on the high And adjust from there, You might have turned the idle up too high. The choke should always be fully in when saw is running. Hope this is a good start

Oct 04, 2013 | Husqvarna Garden

1 Answer

HARD TO START WHEN RUNNING IT DIES UNEXPECTANTLY ?


Is the fuel fresh? What is the idle like? Does the chain spin when idling? Could be a clutch problem or broken clutch spring? Carby setting could need adjusting? Is the air filter clean? Have a look at the spark plug?

Sep 27, 2013 | McCulloch Garden

2 Answers

Idles fast, won't cut wood, stalls under load


Clean the fuel filter, air cleaner and muffler if clogged. Check all fuel lines for condition--replace any with original rubber lines--not plastic. The carburetor sounds like it could use a thorough cleaning and re-kit. It's somewhat common for saws to leak some bar oil over a long period. Good luck!

Jun 11, 2010 | Poulan Pro PP3816AV 38 Cc 16" Anti - Vib...

1 Answer

Starts, idles and runs but quits after a few seconds of cutting


Check the air cleaner and muffler for plugging. One screw adjusts the idle stop (idle speed) position and the H and L jet screws set fuel mixture for high speed and idle speed mixture respectively. Turn both jet screws CW to stops (lightly) then back each out CCW 1-1/2 turns. This is a basic setting and should allow the engine to start and run. Start the engine and allow to warm up. Pull the throttle full on and adjust H CW until the engine starts to speed up, but 4-strokes. Correct adjustment is when the engine 4--strokes running free, but immediately 2-strokes when cutting. Release the throttle and adjust L needle CW until the engine idles fairly well, but allows the engine to 'follow the throttle'. Adjust the idle speed screw so that the chain stops turning, but the engine will continue to run. Hope this helps!

May 17, 2010 | McCulloch 16 Inch Gas Chain Saw MCC1635AK

1 Answer

Hi how to tune homelite 330 chain saw carby, idle


Before adjusting anything, check the fuel filter, air filter, and muffler for plugging. Check the condition of the fuel lines for decay or other damage. Tighten all carburetor fasteners. Make sure you have fresh fuel mix in the tank. Does the primer bulb pull fresh fuel into itself when pumped? Turn both jet screws CW to stops (lightly), then back out CCW 1-1/2 turns each. This is a basic setting and should allow the engine to start and run. Start the engine and allow it to warm up, then pull the throttle full on. Adjust H needle CW until the engine starts to speed up, but still 4-stroking. Proper final adjustment is when the engine 4-strokes unloaded, but immediately 2-strokes when cutting. Release the throttle and adjust L needle CW for fairly good idle, but still allows the engine to 'follow the throttle'. Adjust idle speed screw so that the chain stops turning, but the engine will continue to run. Hope this helps!

May 09, 2010 | Homelite ZR10926 16" Chain Saw

2 Answers

My 455 starts good and idles fine but wont go wide open it boogs down and misses


Here are a few things to consider :
- fresh fuel ratio 40:1
-new spark plug
-choke not sticking
-air fuel mixture correct
-bar and chain oil tank full, oil getting on chain
-bar sprocket in good shape getting lubed.
Please let me know what you find.

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

1 Answer

Echo sc 4400 chain saw can't get to run over a high idle.New plug,clean air filter.Will run above idle if you pull choke out half way but no real power.


Sounds like the carburetor is not pulling sufficient fuel into itself. I assume the high speed needle on the carburetor hasn't been fooled with. You might check the muffler for plugging. Is the chain free and being oiled?

Jul 03, 2009 | Garden

1 Answer

Idle is off??


hi leobowdy

disassembly the carb and carefully clean it.Check the air filter,the fuel line and fuel filter,check the needle,lever,small spring and the screen filter from the carb.Check the sparkplug.
high speed H=2 turns,low speed L=2 1/2 turns,adjust T
When chain saw starts adjust H,L and T accordingly.

cheers savumihai71.

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