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Husqvarna 51, best saw even until I dump last of fuel can in. Great start and low speed, cuts out attempting high speed. assumed fouled plug replaced, dumped fuel, blew out fuel filter, new fuel, no ethanol fuel w/stable and sea foam, same performance

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  • Dave Bohlinger
    Dave Bohlinger Oct 23, 2013

    I had only blew out old fuel filter, now replaced, runs awesome, problem solved!



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It still sounds like a dirty fuel blockage. My suggestion is to get really radical about cleaning out all fuel lines, jets, all tiny apertures where fuel travels. Its gotta be somewhere. Think Think and Think.

Posted on Oct 23, 2013

Testimonial: "Husky has quality stone filter, stops everything, may block easy too. New filter $3.28 simple process of elimination. Think works, Thanks EAF"


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: Engine runs but wont idle!

set you carb adjustments at 1 1/4 and try that

Posted on Feb 08, 2009

  • 181 Answers

SOURCE: Husqvarna chain saw starts and runs for 20 minutes then stops.

two things could be happening.......first is vapor lock......make sure you breather tube is clear and is could have a bad ignition coil on it.....after the coil gets hot the spark can become irratic or just not work any more.....

Posted on Feb 23, 2009

  • 334 Answers

SOURCE: husqvarna small chain saw won't stay on and now won't start

check your pick up coil . i had one it done the same thing to and that what it was

Posted on Apr 02, 2009

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SOURCE: Husqvarna ranger 55 chainsaw starts but quits

I too have a rancher 55 and had what sounds like the same problem this week. It would start fine but run for only a few seconds at a time. I took it all apart today and found the problem - a cracked fuel line. In the places where I could see the hose it looked fine, but it wasn't until I removed the fuel tank that I found the crack...right where it exits the tank and then goes thru the housing above it. You don't need to remove the tank to replace the hose but it is easier that way. You do have to push it thru a grommet at the top of the tank. I read some other posts about checking the tank vent to see that it's not plugged up. Mine was ok so I knew it had to be something else. The vent is in a hole about the size of a pencil and is recessed about an inch into the tank on the upper right side. Its partially covered by a plastic cap that's part of the vibration damper, which can be removed to gain access to the vent. The vent tube can then be pushed out from inside the tank with the use of long needle nose pliers, but be gentle. I just loosened it then pushed it out with a finger. I put it all back together with a new hose and its running like new again!

Posted on May 31, 2009

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SOURCE: my husqvarna chain saw bogs down even without chain on it.

I think your "L" adjustment is off by a little, but because it will not hurt, costs nothing, and might be the cause of this, remove, clean and reinstall the muffler and spark arrestor. If the problem persists try this, it is by far the best carburetor adjustment I have found.
Carburetor Adjustment by
CW is leaner; to lean will destroy the saw. If over tightened closed (CW) the adjustment screw faces are easily marred; marred adjustments are difficult to impossible to set properly.
Clean the air filter; adjusting with a dirty filter can cause a run lean condition once cleaned and the saw run.

There are 2 wav (sound - idle & full – may not be highlighted) files that I find most helpful, I think you will too. Good Luck. HTH

Posted on Feb 24, 2010

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1 Answer

What the proper carb settings for husqvarana 51

The initial fuel mixture settings are 1-1/2 turns from seated on each.
  1. Set at best mixture after running,
  2. Set Idle speed at 2500 rpm
  3. Then for best at full throttle and not exceed 12500 rpm.
  4. If the engine want to go above 12500 rpm enrich the high mixture a little to limit the speed.

Feb 14, 2015 | Husqvarna Chain Saw Handle Models 50 51...

1 Answer

Saw will start but will not idle

Someplace near the carburetor should be an idle mix screw and an idle speed screw. There may also be a high-speed mix screw. Try turning the idle speed screw in 1/4-turn at a time until it idles. If you turn it too far, the clutch will always be engaged so the blade will never stop.

Once you get it to idle, adjust the idle mix screw in or out 1/4-turn at a time until it idles at the highest speed. Turn the mix screw in JUST until the idle speed starts to drop a little, then back it out 1/4 turn.

Now adjust the idle speed screw again until it idles smoothly at a low enough speed that the blade stops.

Jul 08, 2014 | Husqvarna Partner Gas Powered Cut Off Saw...

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

I have a series 51 husky saw. it starts and runs normally until it gets up to operating temps. then it stalls out and either refuses to restart or just won't restart until it cools down again....

sounds like air fuel mixture screws are out of adjustment..start with the on marked (L)..this is the low speed(idle) adjustment...turn it in all the way just until it stops..but be gentle..then you wnat to turn it out 1 1/2 turns as a starting point..start the engine and adjust it until you get a smooth, with the saw running, pull the trigger and you should have a smooth response from slow to can adjust the (H) screw until you get good high speed operation...if these adjustments don't fix the problem thenm yoou may need to have the carb rebuilt( a carb kit is usually only 15-30 dollars)

May 09, 2011 | Husqvarna Garden

2 Answers

I have a huskey chinesaw model 50 trying to adjust carb but haveing no luck what is the proper adjustment please help

Hi, Gerald I will try to help. The high speed mixture screw basic setting is about 1 1/4 turns out from lightly seated position and the idle or low speed mixture screw is about 1 turn out from lightly seated position. To get the manufacturers basic or start out setting, remember the position of the screws before you start any adjustments. Both are done the same way. Turn adjust screw in or clockwise until lightly seated (so the soft metal is not damaged when seating the screw) then turn out or counterclockwise, high 1 1/4 turns and low 1 turn out. Do any adjustments in 1/8 turn increments until you get running. Do not turn the high speed mixture screw so there is less than 3/4 of a turn from seated position, The reason is not to run the engine too lean so engine does not overheat. When turning the screw in, there is less gas in the mixture, therefore when turning out you allow more gas in the fuel to air mixture.
The problem might not be adjustment, it could be many other things causing it not to run properly. Make sure the air filter is clean, the fuel filter in the tank is not plugged up. Spark plug might be fouling up, the fuel lines might have dirt or starting to go. The fuel tank is usually vented by the tank cap and might be plugging up not allowing enough air in. Check the bolts screws and gaskets of the carb so there is no air leaking in.
The carb might need an overhaul, cleaning and maybe a carb kit.
These are suggestions to help diagnose the problem. I might have forgotten other things to check out. I hope this helps you out a bit. All the best and good luck.

Feb 06, 2011 | Husqvarna "Chain Saw - 16" Bar, 3 Hp

1 Answer

My 350 will not stay running. It die when i hit the trigger. I changed all filterss and plugs. If I take off the air filter and use my thumb to open and close the air flow over the carb it will work.

Assuming the carb isn't contaminated with debris I would check / reset the carb settings.
Lightly seat the low and high speed screws and back them out 1 1/4 turns. Try so start saw...if it starts and will idle then let the saw warm up. If it won't start then Back the low speed screw out 1/4 turn...try again. Once the saw is warm then set the idle screw so the chain just stops rotating. Adjust the low speed screw inwards and listen for the rpm to increase as you do...keep going until it starts to drop in rpm....back the screw out until rpms have peaked and back the screw a bit more past that...less than 1/4 turn. Try to work the throttle and tweak the low speed screw until the saw revs crisply...readjust idle speed. Apply full throttle and turn the high speed screw in until you hear the saw "sing" will get very smooth and the rpms will increase. DO NOT leave the screw at this setting as it is running very lean and will burn up in short order. Back the screw out until you hear the saw tone "roughen"...the revs will drop a bit and the smoothness in the exhaust tone will disappear. Back the screw out a bit more past the point where the saw tone start to roughen....this will make sure there is sufficient fuel when the saw starts to actually cut.
If none of this works for your saw I would suspect the carb needs to be cleaned / kitted. Also doublecheck that there are no air leaks between the carb and cylinder. Air leaks could be caused by bad gaskets and or loose mounting fasteners.

Dec 14, 2010 | Husqvarna 350 18 Inch Gas Chainsaw 52CC...

1 Answer

How many turns out is the High and Low screws suppose to be adjusted. Also how many turns out is the larger idle screw suppose to be.

Turn both jet screws CW to stops (lightly), then back out CCW 1-1/2 turns each. This is a basic setting which should allow the engine to start and run. Before adjusting anything, check the fuel filter, air filter and muffler for plugging. Start the engine and allow to warm up. Pull the throttle full on and adjust H needle CW until the engine begins to speed up, but still 4-stroking. Correct adjustment is when the engine 4-strokes running free, but immediately 2-strokes when cutting. Release the throttle and adjust L needle CW for better idle, yet allows the engine to 'follow the throttle'. Adjust idle speed so that the chain stops turning, but the engine continues to idle. Hope this helps!

Jul 11, 2010 | Husqvarna Chain Saw Handle Models 50 51...

2 Answers

Husqvarna 51 wont stay idleing

those are the throttle adjustment screws H is high L is Low for the air mixture of the idle.

Jul 28, 2009 | Husqvarna "Chain Saw - 16" Bar, 3 Hp

1 Answer

Husqvarna 435 wot run at full speed runs at idle fine and looks like u need a special tool for the high low carb adustment

On that model the low adjustment may be factory set, and the adjustment screw is replaced with a roll pin. The high adjustment has a cover on it that can be prised free revealing the screw beneath. Turn screw all the way in (clockwise) GENTLY dont overtighten only to when you feel slight resistance on the screw. then back out 1 1/2 turns. This is the base setting. Turn at 1/8th turn either way until good high speed rev is obtained, but no further in than 1 1/4 turns out, or you will run the saw lean and cause damage. Check and replace your plug if fouled at all.

Feb 19, 2009 | Husqvarna "Chain Saw - 16" Bar, 3 Hp

1 Answer

Adjusting carb on husqvarna chain saw

Hi First turn them(H and L) clock wise until the end and then adjust.

high speed H=3/4 turn

lowspeed L=1 1/4 turn

idle speed T adjust accordingly

best regards savumihai71

Jan 19, 2009 | Husqvarna Chain Saw 20" Bar

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