Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 86Get this manual

IGNITION
Crank Position Sensor Removal and Installation
1Disconnect sensor from wi ring harness2Remove sensor mounting bolts
3Reverse steps for installation

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