Chain Saw Issue

NCcummins

NCcummins

NADEAU
Joined
Oct 31, 2007
Location
Asheville, NC
I have tried everything I can think of and cannot keep the saw from bogging down when under a load. I'm using the Husqvarna 455 Rancher. I came to Maine to help me dad clear trees for the week and now my saw will not run right. I got two trees down and then on the third, it would bog down the second it hit the tree. I changed the plug thinking it was fouled. I put on a chain I had just sharpened and added chain oil (it had plenty). I started it after the new plug and it held wide open for about ten seconds and then started bogging down again. I checked the choke thinking it was stuck in the on position but it was fine. I'm not sure if the ethanol in the fuel up here is messing with my saw? I run a 50:1 ratio with Husqvarna oil. For something that seems so simple, I have no idea what else to try. Any help would be greatly appreciated!

Here is the saw I am using:

http://www.husqvarna.com/us/products/chainsaws/455-rancher/#specifications
 
Check your fuel lines, particularly the one inside the tank. I had a Stihl MS360 that did the exact same thing. Had cracks in the lines that you couldn't see, but they were causing it to bog down and die out at heavy throttle.
 
Hard to say without being there and hearing it, but clean the air filter? That probably isn't it. Fuel filter/lines maybe like others suggested?
 
I put some of the blue ethanol treatment in the fuel, mixed a new 2.5 gallon can, and put it in the saw. It seems to be running fine now as I got another four trees down today. I have heard many things about the ethanol eating the fuel lines so that is what I am going to check out tonight before we have a chipper for the day on Friday. I am also going to check the air filter again but it looked fine when I changed the plug. At this point, I believe it is the ethanol in the pump gas. As soon as I mixed the ethanol treatment in, it has not done it yet today. I still have a few more to get down so I'll see what happens. Thanks for the link to the other tread and the suggestions! I'm glad I'm not the only one having this problem.
 
Give me a call if that doesn't work out. I'll tell you about some problems dad has had with the two newer huskys he has. And make sure when you're done with the saw that you run it completely out of gas. If it's close to full, drain the tank almost empty and then run it until it dies.
 
SolarYellow05 said:
Give me a call if that doesn't work out. I'll tell you about some problems dad has had with the two newer huskys he has. And make sure when you're done with the saw that you run it completely out of gas. If it's close to full, drain the tank almost empty and then run it until it dies.
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Adam, I'll do that. I cut all day with it and it seems to be doing fine now. I just picked up the chipper so hopefully it works just as good on Friday. Not really sure if it is the ethanol or not, but it seemed to help with the additive.
 
You need to rebuild the carb. The ethanol eats the diaphrams up and the fuel won't flow. Replace fuel lines and filter while you're at it. When you have it apart blow brake cleaner through the jets and every hole in it and then blow it out with an air compressor and then reassemble. Its a way of life for me now with all of my small equipment. Non-ethanol fuel is the only solution for this not to happen AFTER you rebuild the carb.
 
yea, sound like it needs diaphram, i own a landscaping bus and the hedgers and tillers that dont get used often thats what happens to em.
 
Ethanol is a Beeootch in any tank/motor not run allmost everyday, If left to sit for weeks/months w/o an Ethedammitall additive or a fuel/water filter, you will have lots of vauge and/or expensive problems, especially an outboard motor.
 
Id throw it away and buy a stihl lol but id rebuild the carb... try and avoid using compressed air you can distroy the internal check valves in the carb

sent from deep space via galaxy S 2
 
Sounds like you got it solved & a book of knowledge heaped on you! Just 2 more cents worth; their is probably a fuel filter on the end of the pick up tube in the fuel tank. I also had a muffler clog up once!
 
rodney eppes said:
Sounds like you got it solved & a book of knowledge heaped on you! Just 2 more cents worth; their is probably a fuel filter on the end of the pick up tube in the fuel tank. I also had a muffler clog up once!
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Yes you are right Rodney, take the muffler off and make sure there is not carbon buildup at the exhaust port on the head, make sure the muffler isn't clogged and if there is still a screen in it, throw it away.
 
I'll definitely get the fuel filter replaced and check the build up. I won't be using it for a while not that I am back in NC. It worked great though all day Friday (I got down 28-30 dead trees before starting the chipper). I appreciate all the advice and I'll spend a day going over everything sometime soon to make sure it does not happen again. My dad went out and bought a new stihl......
 
Again, the fuel lines. My next door neighbor got a Husky weed eater, had about 3-4 hours on it when it took a dump on him. The fuel lines were monkied up somehow, something with the primer bulb. Something from the factory.
 
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