Question about Husqvarna , No.455 Rancher, 20" Gas - Powered Chainsaw

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Husqvarna 51 idle seems to struggle, runs OK when I throttle then chokes and dies out as soon as the throttle is released. What can I do?

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Will it start right back up after it dies? you could use a small screwdriver and turn the idle screw in a little to raise the idle speed that should fix it.

Posted on Oct 12, 2010

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I have a Husqvarna 142 chainsaw. The saw will idle, however when I depress the throttle the saw chokes down a dies.


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Adjust the choke or carburetor. In case your chainsaw stalls when the engine is idling, ensure that the choke is set properly. To do so, first try releasing it to adjust it, and then move the plate and tighten all screws once again. To loosen any grit, spray carburetor cleaner spray on the choke's shaft. The carburetor may also need to be adjusted; consult your owner's manual which will guide you on resetting the idle mix screw.

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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

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Strimmer will not run on full throttle.When choke engaged will idle fine,but as soon as I release the choke it dies.It has fresh fuel mixed correctly.There are no obstructions such as grass in the...


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How to adust carb on husy 51 saw will run a bit than bog down


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Dec 12, 2010 | Husqvarna 350 18 Inch Gas Chainsaw 52CC...

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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 -...

1 Answer

Want start


Read the warm start procedure from the operators manual.
1. Pull choke (sets fast idle)
2. Push in choke (fast idle retained)
3. Make sure ignition is on, pull (usually once on my saw)
4. Advance throttle slightly to release fast idle.
I made the mistake ONCE of not setting the fast idle. My shoulder gets sore thinking about it. HTH
Lou

Sep 21, 2009 | Husqvarna , No.455 Rancher, 20" Gas -...

1 Answer

I can't find the adjustment for the fuel mixture on my chainsaw, it is a husqvarna 61. i see the throttle adjustment but that is not helping, i have to keep the choke about 1/2 way out in order to keep it...


It is running lean. Continued operation like that will cause it to fail. Spend $40 for a tune up by your friendly neighborhood chainsaw seller/mechanic. If you ask nice they will show the location of the carburetor adjustments (3 normally). HTH
Lou

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