2001 Edition Yamaha F225A and LF225A Outboards Service Manual, Page 316Get this manual
TRBL SHTG
Troubleshooting
9To perform the test again to the same cylinder, click the Execute button or press the Enter key on your keyboardTo perform the test on different cylinder, click the Return [ESC] button or press the Esc key on your keyboard to return to main menu where different test can be selectedNOTE: If an error occurs while the test is being performed, the following message is displayed