Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 190Get this manual

CYLINDER HEAD
INTAKEEXHAUST VALVES

4-Stroke Outboard Oil (92-828000A 12)

Page 4A-10

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives