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

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Will not crank,low compression husqvarna 455 rancher

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How you cnow its low pressure? check spark, air filter, and any air leak from between cilinder and carburator.

Posted on Mar 18, 2011

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SOURCE: husqvarna 455 rancher . it

it could be the small gasket between the head and carb. they are also bad about the fuel line coming out of the tank gettin rubbed and making a small hole or pinched.

Posted on Oct 12, 2010

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1 Answer

What is the gas / oil ratio mixture for husqvarna 455 rancher model ?


50:1 that's 2.6 ounces of 2-stroke oil (preferably with fuel stabilizer) to one gallon of gas. I recommend using 89 octane gasoline for all small engines. It has little or no ethanol in it, as opposed to the 10% typical in 87 or 86 octane fuel. This will prevent a lot of fuel issues, especially if you are not using the tool daily or at least weekly.

Aug 02, 2014 | Husqvarna "965030298 - 455 Rancher, 20""""...

1 Answer

Trying to find the correct compression for a Husqvarna 455 Rancher chainsaw?


you wont... as per husky anything under 110 would be suspicious. I have seen those saws with the lower piston ring gummed up from a rich fuel mixture.

Nov 29, 2013 | Husqvarna , No.455 Rancher, 20" Gas -...

1 Answer

Huskavarna 455 rancher with pplug keeps popping out


This is the de compression button, it should be pushed in every time you start the saw, it makes it easier for you to start the saw and reduces the stress and wear on the starter components, it will automatically pop out when the saw starts.

Dec 08, 2012 | Husqvarna , No.455 Rancher, 20" Gas -...

1 Answer

Compression ratio for husqvarna 455 rancher chainsaw


be careful check the compression on that engine it has a compression release valve on the side of the cylinder the release builds up with carbon and it sticks dropping the compression

Aug 27, 2012 | Husqvarna , No.455 Rancher, 20" Gas -...

1 Answer

I have a Husqvarna 455 Rancher - about 1 month old. Worked perfect one day. Would not start the next. Feels like there is no compression. Second 455 with this problem.


There is only two reasons for low compression, either the piston ring has gummed in, or the piston has seized, remove the muffler and check out the condition of the piston skirt through the open exhaust port, any signs of scuffing and the piston has seized, it will then need to come apart to see how much damage has occured. Saws today are set up very lean on the mixture to get the best emmissions not the best running, they realy need to be using the very best two stroke oil.

Sep 09, 2011 | Husqvarna , No.455 Rancher, 20" Gas -...

1 Answer

50to 60 compression on a husqavarna 455 rancher chain saw. Ring job and how hard?


455 is an X Torq engine, this means it runs very cool on the inlet side of the piston, they are quite prone to gumming the ring in if they have been used on a heavy two stroke mix, due to the designit is a full machine strip down to get to the piston, skilled man 3 hours to strip and rebuild.

Sep 07, 2011 | Husqvarna , No.455 Rancher, 20" Gas -...

1 Answer

How hard is it to change piston, ring, and cylinder on a 455 rancher chainsaw?


It is a full strip down, the cylinder makes up part of the crankcase and sandwiches the crank and main bearings, it is not a job for an amatuer, i can try to go through it if you wish to carry on with it.

Jul 26, 2011 | Husqvarna , No.455 Rancher, 20" Gas -...

1 Answer

Husqvarna 455 rancher . it has low compression and no fuel to plug . wont start but piston and rings are fine .Help


it could be the small gasket between the head and carb. they are also bad about the fuel line coming out of the tank gettin rubbed and making a small hole or pinched.

Oct 12, 2010 | Husqvarna , No.455 Rancher, 20" Gas -...

1 Answer

I have a Husqvarna 455 rancher I have been trying to adjust the idle and carburetor but it's still running a little rough. Any Suggestions?


husqs are sensitif for dirt in carb and fuelsystem clean everything real good. airfilter, carb, tankfilter. after building together make sure it can not take false air. start with both screws closed and open for 360 degrees. after that start adjusting. compression must be ok. saw must hang on cord and not go down. good luck lot of work.

Jan 27, 2010 | Husqvarna , No.455 Rancher, 20" Gas -...

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