How to Rate Stihl Trimmer Decibels

The Stihl 2-cycle engine is found on small power lawn tools such as leaf blowers, chain saws and trimmers. These engine's runs at over 12,000 rpm's while in the full throttle position. At such a high rpm it omits a very loud noise. Noise is measured by dB (decibels); the higher the decibels, the louder the noise is.

Things You'll Need

• Standard sound level meter

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Instructions

1. • 1

     Turn on the sound level meter.

   • 2

     Make noise to ensure the sound level meter is working.

   • 3

     Start the Stihl 2-cyle engine, and adjust the throttle to the maximum rpm.

   • 4

     Holding the meter approximately 2 feet away from the engine power head, measure the noise, and record the readings presented by the sound level meter.