OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Chainsaws and Concrete Cutters Petrol Chainsaws and Concrete Cutters Older Craftsman Burns Rich Suddenly

It seems to me that an older Craftsman 1.9/12" saw suddenly started to burn rich, but not a constant rich, all at once. Someone I met at the library suggested that maybe the carb pump diaphram had a hole it it but I can't discern any hole in either diaphram. Have I just not seen the hole or is there any chance of oil somehow leaking from the chain oil tank into the fuel tank?
Or maybe the problem is elsewhere? Could anyone be so kind as to offer any suggestion?
I'm almost 99% sure that the gas/oil mixture ratio is not the problem. Thank you for any assistance anyone is willing to give.

Sincerely,
R. Smith

How old is your saw ??

I would try a carb rebuild. carb kits are cheap.

I used to run a lawncare company, and know how troublesome these small 2 stroke motors can be.

I have seen more blowers, saws, trimmers and the like be thrown out simply because someone left gas in the tank for 3 years, and the diaphrams in the carb got hard. After that happens you may as well forget it.

I personally own two trimmers and three saws that I have found in the trash. The only thing wrong with any of them was that the carbs were in need of a rebuild, after that, they all run great.

If your saw is more than a few years old, I would try a carb rebuild, esp. if you have let it sit with stale gas.

Good luck

Mike Mandry