Honda CRF1100A 2021 Owner's Manual page 167

When you push forward or pull backward the
function lever, the volume control level
appears on the pop-up information.
Push forward the
function lever
Pull backward the
function lever
To increase the volume: push forward the
function lever.
To increase the volume rapidly, push forward
u
and hold the function lever.
To decrease the volume: pull backward the
function lever.
To decrease the volume rapidly, pull backward
u
and hold the function lever.
Volume level range:
Other than Microphone: Level 0 to 30
Microphone: Level 0 to 14
Function lever
Continued
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