Posted by Chris NW Ind on May 16, 2018 at 18:24:25 from (174.221.14.50):
In Reply to: Re: Chain Saw Gas posted by showcrop on May 16, 2018 at 18:08:25:
The 16:1 ratio and the straight weight motor oil for 2 stroke mix are both silly. Both are obsolete standards yet people still advocate it. All 16 to 1 does is create smoke and using 30W (very common for old saws) creates alot of soot in saws. This leads to carboned ports and pistons and can lead to carbon breaking off and scoring skirts. I have lots of old manuals and many recommend decarbing the exhaust ports with a wooden stick. How many poor running motors can be traced back to clogged exhausts?
I've never seen an oil-rich mix plug up carb screens. Varnished fuel, sure. Ethanol is a little sketchy, seems to cause alot of trouble with tygon fuel lines, but rubber holds up better. Main thing here is to avoid old fuel. Dump it in your old tractor if suspect.
Clogged cylinder fins are another source of overheating and scoring. Some Homelites were notorious for this to this point of Homelite detuning the saw and calling it fixed. I'm speaking of the SXL925 and the 540. Wasn't exclusive to Homelite.
Start talking outboards and that's a whole different can of worms.
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Today's Featured Article - New Hitches For Your Old Tractor - by Chris Pratt. For this article, we are going to make the irrational and unlikely assumption that you purchased an older tractor that is in tip top shape and needs no immediate repairs other than an oil change and a good bath. To the newcomer planning to restore the machine, this means you have everything you need for the moment (something to sit in the shop and just look at for awhile while you read the books). To the newcomer that wants to get out and use the machine for field work, you may have already hit a major roadblock. That is the dreaded "proprietary hitch". With the exception of the
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