Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 131Get this manual

Fuel Pump General Information
FUEL PUMP DESCRIPTIONOPERATION

CHECKING FOR RESTRICTED FUEL FLOW CAUSED BY ANTI-SIPHON VALVES

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