The older and newer saws are all the same when it comes to the winter /summer setting function .When all assembled the air is taken from the front section of the hood if you rotate the arrowed cylinder. Your saw will have ,had and should have the pre filter under the small side cover to be as it was from factory .
This IPL shows all the parts we have been talking about ..only shown difference is the addition of a decomp fitting that not all saws have.
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