And if it was an air leak, the operator ignored a lot of tell tale symptoms. A saw with an air leak like that would never idle down properly.
Well the failure of the 066 was a bad seal on the chain side of the crankcase, my foreman doesn't have as much experience in running saws but is great at keeping my crew productive and getting the job done properly so he's still learning the tell tale signs.
Luckily the local dealer is going to replace everything for me and have the saw back in my hands for under $300, it's a steal if ya ask me but I know he cuts me a great deal because I'm a "commercial" customer.
However I've learned a lot of tips on what everyone here is doing with their gas mixes and I think that was the cause of my 660 chipping the head of the piston on the exhaust port side. So I'm going to mix my fuel a little richer for a while and see what kind of performance I can see.
Ok wow that must have been one he$$ of an air leak . The $300 price seems super reasonable to put it back together.
I bet your guy got the bar stuck and started tugging and pulling on that saw like a mad man, you need to teach him how to use a saw properly, and how to get the saw unstuck without tugging on it. It really sounds like this guy shouldn't be running a saw at all if you ask me. Does he ware any PPE?
So I'm going to mix my fuel a little richer for a while and see what kind of performance I can see.
Hey Ray Bennett just for the sake of argument, how much oil would I have to run to blow a saw from being too lean? How about 1:1? If you think your theory is true-- try it. I would like to hear your report back. If your idea is true the darn saw would scream on straight oil!
Now try it at 500:1 and see how rich it is (don't try it long LOL)
Ray there are enough guys on this site that you could get some of them to go along with turkey manure being a good gas additive.
. If the shop tunes his saw on 50:1 on a real cold damp day, he may need a different adjustment on a 100 degree dry day with an employee using a dull chain and 32:1 mix. I realize the theory sounds wrong but I think others here will agree.
There was a report on another site that some batches of "10% ethanol" gas was tested/analyzed and found to have greater than 25% ethanol. That would cook most two strokes unless you had a lot more oil in the mix.
I filled two 55-gal drums with pump premium before the switch to corn fed and am about out of the good stuff. I don't use that much fuel so next time I'm filling up the drums at the airport. If I pay $1.50 more a gallon I'm still ahead if it avoids cooking just one saw. Another plus is the mix and the raw gas itself has a longer shelf life.
If I can sneak some samples in at work I'll try to check some of the local corn fed for alcohol content.
Yes a 2-stroke engine tuned in the cold will run rich in warmer temps.
Ray try going from 50:1 to 32:1 and see what happens, you'll be surprised.
There is a point of diminishing return on oil mix. Giving the saw more oil gives it less gas. This will slowly let the saw gain a few RPM's until the saw looses R's because the oil prevents proper combustion of the fuel. Andyshine made a good point that I left out about the weather which will affect the saw more than a little extra oil. Other factors would include dull chains, Ethanol, I could go on and on. I was just trying to let a guy that has had some tough luck with saws in on another factor that will affect his saw. If the shop tunes his saw on 50:1 on a real cold damp day, he may need a different adjustment on a 100 degree dry day with an employee using a dull chain and 32:1 mix. I realize the theory sounds wrong but I think others here will agree.
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