[James Jarratt]

I recently purchased and installed a replica Aprilia 6V horn, but I haven't been able to make it work.
Voltage across wires to horn goes to 6V when horn button is depressed, but the horn only makes a slight sound when button is released.

Can anyone offer a clue about adjusting it so that it works?

Thanks in advance.

 

[Simon Audi]

Normally there is a small X head screw and lock nut - loosen lock nut and turn screw in and out a little... to allow it to resonate.. its a case of finding the correct position.... but it could also be U/S

 

[James Jarratt]

Thanks Simon,
I have backed the screw right out, and there wasn't any improvement.
Maybe its just no good, like a lot of replica stuff.

 

[K1W1]

Shouldn't there be 12V on a modern bike?

 

[Hui]

Thanks Simon,
I have backed the screw right out, and there wasn't any improvement.
Maybe its just no good, like a lot of replica stuff.

Don't just back the screws out, you have to adjust so that they/it contact the diaphragm to vibrate against it.
I presume your talking about a 6v bike and not the scrambler ?