Yamaha PASC4 Owner's Manual page 37

To main riding display.
RecordReset (Record Reset)
TIP
You cannot reset the odometer.
1. Select an item by using the assist mode switches (up)
or (down) and use the function select switch to place a
check mark in the check box for the item that you want
to reset.
2.
switch, the items with check marks will be reset and the
display will return to the main riding display.
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Items with check marks will be reset
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