- 1). Measure the power head or engine portion of your weed eater.
- 2). Trim a plastic flower pot with a hacksaw (or fabricate your own fiberglass power-head cover) such that it can be placed over the power head, leaving 2 to 3 inches of space between the cover and the power head.
- 3). Spray the inside of your power-head cover with spray-foam insulation so that it is about 1 inch thick. If the foam expands too much, shape it with a butter knife, the way you would shape frosting on a cake. Then, allow it to dry and harden.
- 4). Mix two-part polyester resin used in fiberglass applications. With a foam brush, paint the resin over the spray foam. Apply several coats, allowing the resin to dry in between applications and cover thoroughly as the spray foam's surface is flammable.
- 5). Drill a hole in the bottom of the pot.
- 6). Remove one of the head bolts.
- 7). Replace the head bolt with an identically threaded bolt that is 3 inches longer. As you replace the bolt, fit a 2-inch tube spacer and washer. Slide the washer over the bolt; slide the bolt and washer through the underside of the pot and slide a second washer onto the bolt. Slide the spacer onto the bolt and tighten onto the weed eater, creating a sound-deadening cover with enough air space for cooling.
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