Question about Husqvarna Chain Saw 20" Bar
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Posted on Jan 02, 2017
Check the fuel lines for cracks/breaks. If they are o.k., then:
You willneed to disassemble the carburetor and spray with carb.cleaner.Makesure the small screen is free of debris. (Should be able to see daylightthrough it.)
Use a Den Tek Brush, (http://www.drugstore.com/products/prod.asp?pid=165357&catid=1152),to clean the small portals in carb. These portals can become blocked. Reassemble and start.
If the carb. parts are more than 4 years old, you may have to replace them.
If you need further assistance on:
1. Fuel line replacement or
2. Carburetor kit replacement
Just let me know.
Posted on Nov 27, 2009
check set screws on the side of carb turn the all the way in the turn out till idles or check the screen in the muffler
Posted on Feb 04, 2010
I hope 2 different problems Marvin. I think the starter is most important, after you reply with findings we will take on the likely fuel delivery problem. Please do this and post back (below) with what you find.
Starter Handle difficult to pull:
1. Remove the starter cover. Does the starter operate smoothly? If yes, reinstall the cover and continue with 2, if not repair the starter.
2. Is the saw equipped with a decompression valve? Yes continue, no proceed with 3.
· Leave the ignition off, set the valve and pull the starter.
· Pull gently to release the valve. Is there a difference in the effort required?
· If yes continue with 3, if no repair or replace the decompression valve.
3. Was this saw perhaps operated in a lean condition (metal transfer from the piston to cylinder wall)? This may be caused by many things including but not limited to; leaky intake connections at the engine or carburetor; leaky crankcase seals; cracked fuel delivery lines; running on gasoline containing no 2-cycle oil.
· Disconnect the spark plug wire and remove the plug. Remove the muffler (clean it and the spark arrestor before reinstalling), hold a light at the plug hole and inspect the cylinder through the exhaust port. Is it smooth and shiny or does it appear speckled with dull gray spots or smears?
· Pull the starter slowly, inspect the piston as it rises and falls. Is it a dull gray without scratches and gouges?
· Hold the light at the exhaust port and look through the spark plug hole, inspect the cylinder above the exhaust port. Is it shiny and smooth or speckled with gray spots or smears?
Please Note: Any spots or smears on the cylinder or deep scratches and gouges in the piston indicate the saw was operated in a lean condition. Repair of this on a home owner quality saw often exceeds replacement cost. A repair estimate by an independent saw shop should be considered.
4. The last likely possibility is the saw has jumped timing. Inspect the flywheel and crankshaft under the starter cover. Are the woodruff key slots aligned and the key intact? Please take it to a good local saw seller/mechanic for a written diagnosis before authorizing any repair.
If you have more questions or need additional help please reply below and I will get back to you. Thank you for using FixYa and Good Luck. HTH
Starter fluid removes what little lubrication is provided by the fuel mix. I suggest a teaspoon of mix into open carburetor throat or the plug hole. Do not go to speed with the air filter removed.
Posted on Mar 29, 2010
Testimonial: "I think this is excellent advice. Thankyou very much"
Take the saw back for warranty service. We have a Husky #435 that had starting problems when new last year--warranty service replaced the ignition module the first trip, then a little later, they replaced the carburetor--it has worked very well since. I suspect that Husqvarna has had problems with our ethanol blended fuels. Hope this helps!
Posted on Jul 14, 2010
Take apart the fueling system and carb. Something is blocking or gummed up. One thing that sometimes works is to remove air filter, rev the unit up, and place hand fully over the intake, and remove before unit stalls. This sometimes will clear the blockage.
Posted on Oct 05, 2010
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