1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 77Get this manual
Quality of the image is intentionally reduced!
CHARGING AND STARTING SYSTEM
1 Set meter to 2 Connect BLACK () meter lead to regulator case3 Connect RED (+) meter lead to BLACK leadResistance Specification 0.0 OHMS 4 Connect BLACK () meter le