Horn question - Honda CBR500R Forum : CB500F and CB500X Forums
  • 2 Post By ExTex
  • 1 Post By PiedmontBuckeye
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post #1 of 3 (permalink) Old 05-11-2019, 12:54 AM Thread Starter
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Join Date: Mar 2015
Location: Meridian, Idaho
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Horn question

What's that little screw (that's partially backed out) on the back of the horn for?

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post #2 of 3 (permalink) Old 05-11-2019, 10:28 AM
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Location: SE Arkansas
Posts: 1,387
That screw is for the owner to screw up!

It is for adjusting the horn electrical connection IF the horn ever fails to honk properly.
Otherwise, the turning of that screw messes up the horn and you go buy a new one.

Have a good day.
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post #3 of 3 (permalink) Old 05-11-2019, 11:13 AM
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I am assuming it is like other horns. The screw does adjust the horn - but not the electrics, but the gap between the metal plate and the energize/de-energize magnet that causes the plate to vibrate - thus creating the sound and the pitch. By adjusting the gap, you can get the horn pitch (and some loudness) to change. However, it can be touchy, as adjusting too far either way (too close a gap, or too big a gap) will cause the horn not to work.
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