1998 Mercury 9.9/15HP 4-stroke outboards factory service manual, Page 188Get this manual
Quality of the image is intentionally reduced!
CYLINDER BLOCKCRANKCASE
31 30 29 28 27
12 17 12 14 15 22 16 23
40 39 41 39 42
A= TO TELL-TALE
Page 4B-6
90-856159R1 AUGUST 1998