Yamaha 25BMH 30HMH Factory Service Manual, Page 394Get this manual

IGNITION SYSTEM
CHECKING THE SPARK PLUGS
Refer to "CHECKING PLUGS" on page 3-22Standard spark plug 25B: NGK BR7HS-10 30H: NGK BR8HS-10 THE

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