too lean?

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treefrog2

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In the past, I have posted some problems I was having with my Homelite 340 on this site before and I was surprised at the number and quality of the responses I have received. So much so, that I have recommended this site to all other chainsaw owners that I know.

So here is the deal, I finally got the saw to run after the fuel line was replaced (not with a factory one, I might add!), the carburetor was cleaned, and the gaskets were replaced. I was told that the saw is still taking in a little air, probably through the fuel line somewhere.

I was unable to get a factory fuel line from Homelite and so I contacted Solo because the 340 is really a rebadged Solo 654. They had the fuel line, but it was going to be over $60.00 with shipping. I did not order it.

The problem I was having was that the saw would not idle. So I decided to put plummer's putty around where the fuel line comes up from the tank and where the fuel line goes in to the carburetor. I did this to see if the saw would run any different. The shop that I took the saw to removed the plastic piece that joins the fuel line to the carburetor and opted to just fit the fuel line over the metal nipple. I was thinking the air leak may be at this point or where the fuel line comes out of the fuel tank.

I then turn the idle speed screw to a slightly faster idle speed and the saw now idles, although irratically. I can turn the saw on its side and upside down and the saw will not stall. It also seems to cut fine, but I am worried that it may be getting too hot. I can't tell this for sure because I don't know how hot it should be getting, but I fear that it may be running too lean.

My question is, how would I tell if it is running to lean and how would I tell if it is running too hot? Can I increase the oil concentration in the mix that I am using to increase lubrication?

Thanks for the input.
 
What is the recommended WOT? Do you have access to a Tach to find out where you are at? Rough idle: Checkvalve? Vent filter?

I am not a tech, but these are a couple of things that jump into my mind from your post. I'll take this back to the "top" and maybe someone who is qualified will jump in.
 
to check for lean

"read" the plug. Providing the plug is not brand new.. run the saw a while.. take it to wide open in a cut and as you are just about to come out of the cut, Hit the kill switch. Then remove the spark plug and see what color.. should be Three or four times laundered, carhart brown in color.
 
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