wrote:
if you have a straight shaft trimmer with the brush blade ,the
blade acts like a flywheel and can overrev engine so a detuning is
needed.

http://www.minibite.com/america/malone.htm



A flywheel cannot increase the rpms. Under no load conditions it might
run a few rpms faster than with a line head simply because there is a
little less air resistance but there is no need to "detune" it. Most
strait shaft trimmers are built to take a blade.

Why is it that there never seems to be any decent advice from webtv people?


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Art