Chainsaw Repair

That pot licker is a runner,I'll testify to that fact .It just would not suck fuel yesterday .

My suspisions are stiff check valves .Now I've ran them dry,left fuel in them found really no difference .That damned ethanol just stiffens the innards up .

The last few carb kits I got it looked like the checks were made of a material more robust to the effects of ethanol .The earlier versions used what appeared to be buna N which is not as robust .BTW ,Stihl crankshaft seals are a tad different also than earlier versions .

I wish they would use that corn to fatten cattle and make whiskey instead of sticking the stuff in the gasoline tank .Might as well chit in one hand and wish in the other .Good grief !

I just had a thought occur to me that might be something or just a waste of time .

I've taken apart those old boat anchors that were ran on heavy oil mix,16 to 1 .They smoked like they were burning soft coal back then .However even after decades of sitting and the motor oil evaporated and left an oily residue those things had carb innards that were as supple as they likely were when they were new .

I just wonder if a person ran the things dry then fired it back up with oily gas  then drained the tank if the long term storage would be any better .

I did some testing of 325 chain vs 3/8 chain on my stock 5000 plus. First the 7 tooth 325 chain.

7 tooth 3/8 chain.

Man dont leave me hanging wondering.  Chain types?