i belive a 14'' cos will do it.the ts760(stihl) has a max of 4 3/4. there are the walk behing self propelled 18'' saws even the had held system can have a wet system installed. the biggest thing besides safety is the diamond blades. you have to be very carful with them. they cost alot and if you overheat them or tear all the diamons off you will be charged for it.

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have no worries.....President Obama swears "If you like your gun, you can keep it