2001 Edition Yamaha F225A and LF225A Outboards Service Manual, Page 335Get this manual
Yamaha Diagnostic System Data comparison graph line graph appears with the items selected in the Data display item selection window on the vertical axes and the Time before engine stop on the horizontal axis(Fig55)
Fig55 NOTE: The item on the left vertical axis is graphed with solid line and the item on the right vertical axis is graphed with dotted line Although the engine is running, graphs do not show the present engine conditionIt displays the value at the time the Enter key on your keyboard was pressed in the Monitor item selection