bigw
ArboristSite Lurker
Should I use the felt pre filter or not.
Personally I have not seen a benefit from pre filters. All I have seen them do is hold more garbage and in my experience they tend to block airflow even faster. Being felt a lot of the chips are very difficult to remove in the field as well whereas tapping a dry paper element tends to get most stuff out.
I cut a load of firewood with the new filter without the pre filter and it worked great. I came home and gave it a shot of compressed air and it's looking like new again.
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