1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 207Get this manual
Quality of the image is intentionally reduced!
POWER TRIM
Electrical Troubleshooting
CONDITION OF TRIM SYSTEM ATrim motor does not run when trim button is depressedBTrim system trims opposite of buttonsPROBLEM 1, 2, 4, 5, 6, 7, 3