Just bought a gas gas 280 2012 model. Can anyone tell me what this switch is for ? Can’t seem to find an explanation for it in the manual . 

Thanks 

Google search gas gas switch. I just tried it.

Taff

It's the map switch.  Large button selects normal ignition map for dry conditions, pressing the small button selects a softer map for wet conditions.  But in my opinion it's makes little difference.

 

placebo effect switch.

Tested it with a timming strobe and it act in ignition advance and give your engine a sligty softer behavior. But the effect is small on some engines.

https://www.youtube.com/watch?v=XkJQsVgMTLE

Edited September 25, 20178 yr by cascao