Question about Husqvarna , No.455 Rancher, 20" Gas - Powered Chainsaw
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.
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
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
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Posted on Jan 02, 2017
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