Question about Husqvarna Chain Saw 20" Bar

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Saw will start with choke out but dies when throttle pulled

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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

  • 1 Answer

SOURCE: spear and jackson chainsaw. runs

OK - let's work through this. If you need choke all the time then the mixture is too weak when the choke is off. Putting the choke on literally chokes off the air supply to the engine by lowering a small shutter across the entrance to the carburettor. That means either there is too much air getting to the engine (don't see how!!) or too little fuel. So, how do we get too little fuel? You could check for this as follows;
- before we do anything tricky let's check the obvious things - is there a fresh fuel mix in the tank? Petrol does go off, especially if there is 2 -stroke oil added to it. If it's over a month old from the pump mix up a fresh batch. Is the idle speed set too low so the engine stalls when the choke is knocked off? You can see this screw to one side of the carburettor (you need to remove the top lid in front of the handle on the chain saw, and then remove the air filter to see it). Turn the screw half a turn clockwise to speed the engine up. Be warned - if the engine starts it will run faster than normal and that means the chain may start to spin around. Also - check that the chain brake is off (i.e. the safety lever is pulled backwards, and that the chain is free to move BEFORE you attempt to start)
- is the fuel filter blocked? To get to this, make a wire hook (e.g. thick fuse wire) and gently hook out the fuel filter that's sitting at the bottom of the fuel tank, and take a look at it (be gentle - you can damage the gauze if you are clumsy). Does the gauze look clear? I.e. if you dip it into petrol it will freely run into the filter and of course drain out when you lift it? If not, replace it.
- next stop - are the jets in the carburettor set right? I don't have a service manual for this (and I know the manual says unhelpfully "return for service") but basically you will have seen two holes on the side of the chain saw (below the handle) two small 0.8cm holes; one marked 'L' (for low speed) and the other 'H' (for high). Put a fine flat screwdriver down the L hole and feel for the slot of the low speed jet. Once engaged turn it out half a turn and this will enrich the mixture - if this seems to help and you can start the engine then adjust the L jet in or out until the engine is idling comfortably. If it idles too quickly then you can also turn down the idle screw (see previous paragraph).
- no luck still? Well, it could be fuel pump or a blocked jet in the carburettor but this really is a 'return to the service centre' task!

Good luck!

Posted on Jan 12, 2009

  • 360 Answers

SOURCE: saw stops when i give it gas.

  • plugged fuel filter
  • cracked/loose fuel line allowing air (instead of fuel) into the carburetor.
  • poorly fitting fuel cap
  • plugged or disconnected/broken pumper line

Posted on Feb 16, 2009

nobby63
  • 10 Answers

SOURCE: chainsaw wont stay running

check crankshaft seals,maybe sucking air. most of the time the seal on the starter side. hope this helps.

Posted on Jul 09, 2009

  • 135 Answers

SOURCE: I have a Husqvarna 350 (1998). Just replaced

Kinda hard to hook up the throttle rod incorrectly. When you replaced the piston did you notice which way the arrow on the piston head pointed. It should point towards the exhaust. Also, you probably should have replaced the two crank seals just to be on the safe side. Sometimes, those little creatures can cause total agony and most guys do over look them.

Posted on Aug 02, 2009

dontbother10
  • 2220 Answers

SOURCE: When chain saw is starte it goes to full throttle.

You understand there is a fast idle start position? If your saw is new it is triggered when the choke is pulled and remians in this position (even when choke pushed in) until the throttle is advanced once. Read your warm start instructions, it says pull clutch, push clutch, start. This is why we should buy saws from a chainsaw seller/mechanic NOT Home Depot!!!
I made the mistake ONCE of attempting to start mine without the fast idle engaged... my shoulder aches just thinking about it. GL
Lou

Posted on Sep 14, 2009

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1 Answer

Hard starting no fuel primer noise


Hi Jack:
You don't mention make or model so all I can do is relate 50 years of personal experience.
None of the chain saws that I have owned have had a fuel primer.
This has been (and continues to be for my Husky 266) my start routine. Current saws don't have compression release.
- prep includes fill fuel and oil tanks, check chain sharp and tension, bar tip lube.
- Ignition switch on
- Choke full on
- Throttle full and lock set.
- Pull starter cord *(266 takes 3 pulls, Homelite took 6) until engine fires. If I'm fast I can get the choke off before it dies, otherwise
- Choke off, Pull starter cord. Engine should start with 1 or 2 pulls.
Hope this helps.

Jan 08, 2016 | 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

Throttle trigger will not lock


1. Make sure dead mans handle is fully depressed
2. Squeeze throttle in
3. Push choke switch all the way down
4. Pull saw over till it fires
5. Click choke switch up one position to half choke
6. Pull over saw until it fires up, saw should start running at high rev's
7 .'blip' throttle for saw to return to tick over.

If the choke switch doesn't stay down in section '3' check chokelinkage to carb.

Dec 31, 2012 | Stihl MS181 14" Chainsaw

1 Answer

Choke trigger on the handle will not lock to start the chainsaw


more information please..

To lock the choke on:-
1. depress dead mans trigget on top of back handle
2. squeeze throttle trigger fully in.
3. slide on switch fully down to 'full choke' position. 'it should stay there'.
4. Pull saw over until it fires once.
5. click 'on' switch up one position to 'half choke'
6. pull saw over again, saw should start running and be revving high.
7. 'blip' throttle, saw should stop revving and run on tick over.

Dec 31, 2012 | Stihl MS181 14" Chainsaw

1 Answer

Husqu51 starts once but dies then just turns over


take off the muffler and try it if ok then open it up and clean the carbon from the screen

Apr 02, 2012 | Garden

1 Answer

Have new 450 and is very difficult to start. Lost or didn't get book. How do I start it and re-start it while still warm??


Start procedure is, push the primer as many times as it takes to 3/4 fill the bulb ( you cannot over prime it ) pull the blue choke lever fully out,place the saw on the ground with your right boot through the back handle, crank the engine until it fires once, do not continue to crank the engine with the choke out ( they will not run on choke, only fire ) push the choke fully home, crank the engine until it starts, blip the throttle trigger to bring the saw to idle, warm engine, pull the choke fully out and push in again without cranking engine, this will engage the part throttle, crank the engine until it starts, blip the throttle to bring the engine to idle.

May 18, 2011 | Husqvarna 450 e-series 18" Chain Saw

1 Answer

2nd use of chainsaw pp3516avx, it won't start, choke lever will not stay extended. I followed the instructions to start and nothing works


The choke system is connected to the half throttle position, if you lift the throttle trigger the choke pull will automatically return, whilst trying to start do not lift the throttle trigger, the starting procedure is, pump the primer bulb as many times as it takes to 3/4 fill the bulb, pull the choke pull fully out, this will switch the saw on and engage the half throttle, crank the engine until it fires once, do not continue to pull,it will actually not run on full choke, if you do continue to crank with the choke fully out, you will very quickly flood the engine, now push the choke fully in, now crank the engine until it fires up, lift the throttle trigger once, this will dissengage the half throttle, and it should now come down to idle.

Mar 19, 2011 | Poulan Pro 16-Inch 38 cc Anti-Vibration...

1 Answer

Runs first 30+ sec then bogs out/dies when throttle pressed


If still under warranty have it serviced (authorized dealer not Joe's lawn mower). There should not be a fee (paid by Husqvarna). There have been carburetor problems. If you adjust it your warranty will likely be void; Joe's small engine service just as likely to void any warranty. Are you using a fresh 40:1 fuel oil mix. The will not start with choke set is normal. Start procedure in your OM says listen for sputter and disengage choke. Almost all new saws have similar start procedure.
Start Procedure
Cold:
  1. Ignition on/off to on.
  2. Set compression release – optional step even if saw is equipped with a compression release.
  3. Pull (close) choke, set fast idle (done when choke closed on some saws); pull starter and listen for an attempt to start. once heard (usually two pulls; no more than 4).
  4. Set compression release – optional step even if saw is equipped with a compression release.
  5. Push (open) choke pull starter until it starts. (usually first pull).
Warm:
  1. Ignition on/off to on.
  2. Set compression release – optional step even if saw is equipped with a compression release.
  3. Pull (close) choke, set fast idle (done when choke closed on some saws) – Do not pull with choke closed.
  4. Push (open) choke, pull starter until it starts. (usually first pull).
If you have more questions or need additional help please reply below and I will get back to you. HTH & Good Luck.
Lou
Thank You for using FixYa.

Jul 30, 2010 | Husqvarna , No.455 Rancher, 20" Gas -...

2 Answers

Will not start - brand new


i bought a new dirtbike as a kid n same thing.it turned out ,it needed to be a synthedic oil in the mix.try seeing for spark to begin with by putting sparkplug in the wire n touching diode to the engine block while pulling the cord.thats a good starting point to diagnosing your problem.maybe try warming it up in the house then try starting it with no choke needed.the saws i ve used needed you to give it throttle after you pull,n no throttle with choke.

Mar 12, 2009 | Poulan Pro 16-Inch 38 cc Anti-Vibration...

1 Answer

Makita 6410 petrol disc cutter


First of all, make sure you have followd the correct start up procedure.
(1)Throttle on and locked in start position, (2)choke on and pull a few times. Saw should fire briefly and cut out. (3)Now switch to idle (half choke if applicable) and pull another couple of times. Saw should now fire and run. If you have pulled it too many times in the full choke position you will have flooded the engine. To rectify this you will need two people. One of you should hold the machine steady on the ground with no choke on and throttle fully open. The other should also steady the machine and pull the starter in quick succesion. This could take ten or so pulls but it should start the engine in the case of flooding. Sometimes it will splutter a couple of times before fully starting and it will normally bog down a bit for the first few seconds as it spits out the excess fuel/oil mix.
If you got to point (3) as it shown above, and then the saw wouldn't start, or hadn't fired and died then there could be a few different problems. basic checks are for, clean filter, fresh/clean fuel, clean spark plug (ie, not oily/choked with carbon build up). When checking the spark plug, if it has fuel/oil mix on it then ther is probably aeither a compression problem/air leak or no spark. To check for a spark leave the plug unscrewed but fitted into cap, rest it against a metal part of the saw and pull the starter with the elec switch on. You should see a healthy blue spark. WARNING, do not rest the spark plug near the plug hole as if it does spark it could ignite any fuel/oil mix that is pumped out of the cylinder. I've had many a singed eyebrow from this happening. If there is no spark, check to make sure the cap is attatched securely to the lead,and try repacing the plug. If this doesn't help you will need to get the coil, ht lead and wiring tested.

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