1983 Yamaha 30EN Outboards Service Manual, Page 7Get this manual

GENERAL INFORMATION
SPECIAL TOOLS
The proper special tools and necessary for complete and accurate tune-up and disassemblyUsing the correct special tool will help prevent damage caused by the use of improper tools or improvised techniques
OUTBOARD MOTOR IDENTIFICATION

Engine serial number
The engine serial number is stamped on the plate attached to the cylinder body

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