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

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Will not start after setting 4 years

After setting 4 years my Husqvarna Rancher will not start. In fact it is difficult to pull. The piston is free and when spark plug is pulled it pulls easily but when in it is very difficult leading me to believe the valves are stuck. Does this sound plausible and if so is there anything short of taking in to be rebuilt that I can do.

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  • lreagan Jan 23, 2009


    The carb is in good shape but I think your are right about the lines. I need to get more time to clean them. I have sprayed wd40 in chamber and excercised. Still very hard to pull when plug in. Hard enough that I cannot pull it hard enough to start. Like it has a LOT of compression.

  • Anonymous Mar 14, 2014

    when trying to pull starter the engine seems to be locked up---maybe move one stroke of piston. l can take spark plug out and the engine will turn freely when i pull the cord. could valve be stuck?



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The 455 rancher chain saw is a two cycle motor.Two cycle motors do not have valves in them.Stihl in another matter.Take the muffle off the saw and look to see what the piston rings look like.If they are brownish in color then you need to thak the cylinder head off and clean the piston and rings. usualy it is carbon and old oil.Hogwash works very well in this situation.Use only your hand to rub the hogwash around the piston.Even thought this doesn't sound like your problem.The trouble will be in the car. itself.The gas that was in the carb is on longer.You will need to replace the diaphram and gaskets in the carb.Once you do this the fuel will get to the cylinder.and the saw will fire.Make sure that you ran the oil mixture on the heavy side for the first tank of fuel.This will oil the bearings down in side the crank case.they way be gummed up from sitting for so long.After the first tank of fuel is used up then use regular mixture.

Posted on Feb 11, 2009

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Have You Cleaned out the Fuel Tank, and Replaced with Clean Fuel? I would add a couple of Tablespoons of "Heet" to Your New Fuel too...You Probably have Heavy Gum Residue in the Entire Fuel System (Lines, & Carb)...I would dis-assemble the Carb and Clean ( get a Good Brand of Spray Solvent and Using the Red Plastic Tube Spray into the Ported Holes in the Internal Body of the Carb..Spray out the Fuel Lines as well, then Blow-Out with Compressed Air on Low-Pressure/20 psi)...
I doubt the Valves are stuck!
This should Cure Your Problem, just make sure Your Ready to Make a Few Pulls to get it going, lol...Let it run for awhile, and Your Valves should "Loosen-Up"(of course you could always squirt some WD40 into the Chamber with the Plug Removed, and "exercise" the Engine several times...left Over WD will act as Starting Fluid too)

Posted on Jan 18, 2009

  • Rick Wymer
    Rick Wymer Jan 23, 2009

    Remove the Plug. Take some soft Wire (Copper), or even a Piece of Silver Solder works, put a small Bend in the End of the wire, & Insert into the Plug Hole, twist it around so You can "feel" the Valve...slowly turn the engine, You should be able to see or feel the Valve Open & Close??
    If you were to Remove the Carb (for Cleaning, and Possibly a Rebuild) you could "look" right into the Intake Port, and see what's happening also....Try this and Let me know what You find out.
    Did you Know that WD40 is also Great Starting Fluid??



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Enter the 3 digit model number (no XPs, Es, just the numbers)
Serial number decode – for use with IPL
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Want start

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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

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