1998+ Mercury Mariner 25HP Bigfoot Service Manual, Page 109Get this manual

CHARGINGSTARTING SYSTEM
TACHOMETER CIRCUIT TEST:

TEST RESULTS:

Digital Meter

BlkBlack GryGray RedRed YelYellow

GRY YEL YEL

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