The issue with these small machines like lawn mowers and chainsaw is not really they CO2 the pump out, which is minuscule compared to all the other sources of C

The issue with these small machines like lawn mowers and chainsaw is not really they CO2 the pump out, which is minuscule compared to all the other sources of CO2, but rather that they have zero pollution controls and put out a lot of particulates, unburned hydrocarbons and whatnot. It's a question of local pollution, not global climate. And further, since your average homeowner doesn't use his chainsaw or lawn mower that much, they are relatively insensitive to the price of gas. Or IOW, if you were to raise the price of gas enough to reduce usage of these machines that way, it'd grind the whole economy to a halt.