Mercury Force 9.9, 15HP Outboards Service Manual, Page 62Get this manual

BSPARK TESTING 1Remove coverAdjust spa rk tester (Specia Tool NoFT-11295) 10 3 B-inch gap settingFOfICf OUTIIOAADS

Attach tester to good ground on power

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