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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Re: Will not start after setting 4 years
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.
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)
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www.manualslib.com > Brands > Husqvarna Manuals > Chainsaw Manuals and User Guides for Husqvarna 460 Rancher. We have 3 Husqvarna 460 Rancher manuals available for free PDF download: Operator's Manual ...
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.
You need to check that this machine is mechanically sound, remove the muffler and check the condition of the piston skirt through the open exhaust port, any signs of scuffing ( seizure ), and the cylinder will need to be removed to assess the damage
Find an Operators and an IPL here: HusqvarnaUSA.com http://www.husqvarna.com/us/homeowner/support/download-manuals/ Enter the 3 digit model number (no XPs, Es, just the numbers) Serial number decode – for use with IPL 06 1500198 06 = year produced – 2006 (single digit before 2000) 15 = week produced - March 00198 = 198th unit Husky produced that week
Use a quality 2 cycle oil and mix it to the OIL supplier's recommended ratio. Today I use Stihl 2 cycle oil mixed @ 50:1 in a Pioneer that I purchased new in 1980. There are no gouges or scratches on the piston or cylinder and I have no carbon build up on the piston top. The manual (on stone tablets) recommends 24:1. Over the years the mixture has leaned from 24:1 (Saw Recommendation) to 28:1 (Lawn boy mower recommendation) to 32:1 (Oil provider 2gal premium/8oz chainsaw 2-cycle engine oil - used for many years) and finally the last 5 (±) years 50:1 (1gal premium/2.6oz Stihl 2-cycle engine oil)
Any fuel containing ethanol is not good with chainsaws. Mix what you expect to use within a few weeks. Anything over 1.5 months old use up in a 4 cycle engine. HTH
Use a quality 2 cycle oil and mix it to the OIL supplier's recommended ratio. Today I use Stihl 2 cycle oil mixed @ 50:1 in a Pioneer that I purchased new in 1980. There are no gouges or scratches on the piston or cylinder and I have no carbon build up on the piston top. The manual (on stone tablets) recommends 24:1. Over the years the mixture has leaned from 24:1 (Saw Recommendation) to 28:1 (Lawn boy mower recommendation) to 32:1 (Oil provider 8oz/2gal - used for many years) and finally the last 5 (±) years 50:1 (Stihl 2.6oz/1gal)
Most gas in the US of A contains ethanol; not good with chainsaws. Mix what you expect to use within a few months. Anything over 6 months old use up in a 4 cycle engine. HTH Lou
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
Clean air filter and try starting fluid through air intake if you have spark this will definetely start it......On the rancher , is the air cleaner clean??? Remember that all you need to make an engine run is fuel , air , and an ignition source .. When you attempted to start the Husqavrna by adding fuel to spark plug chamber this actually causes a no start or very hard start condition it will act like if flooded....What does help if you remove the spark plug pull the pullstart and ensure that no liquid (gas is coming out of chamber) if it is keep pulling until it does not.... then take your spark plug ,after you have cleaned and gapped it, and with a butane lighter heat the tip for approximately 30 seconds and then reinstall plug and give it a yank after you spray starting fluid in the air intake....Good Luck