Mercury 15, 20 EFI 4-Stroke Outboard Service Manual


SKU: MERC8M0125265 Category:

Covers: Mercury 15 and 20 4-Stroke Outboard Motors (EFI, Manual & Electric Start)

  • Please contact us with S/N to verify compatibility before purchasing

Pages: 406
File size: 17mb
Compatibility: Windows/Mac/Tablet
Notes: Bookmarked, searchable, printable

This PDF service manual contains all the necessary instructions to service or repair Mercury 15 and 20 EFI 4-stroke 333cc outboard motors. This is the same manual marine techs use to troubleshoot and repair the engine. Whether it’s routine maintenance, such as tune-ups and EFI fuel system service, or more extensive repairs involving engine disassembly, this manual provides the most accurate information to perform the job.

Dated November 2017


Important Information

  • Specifications
  • Maintenance
  • General Information
  • Outboard Installation
  • General Troubleshooting


  • Ignition
  • Charging and Starting Systems

Fuel System

  • Fuel System Operation
  • Troubleshooting and Diagnostics
  • Service Procedures


  • Cylinder Block/Crankcase
  • Cylinder Head
  • Oil Pump
  • Cooling


  • Clamp/Swivel Brackets and Driveshaft Housing
  • Power Tilt

Lower Unit

  • Gear Housing (2.15:1)


  • Throttle and Shift Linkage
  • Tiller Handle

Manual Starter

  • Recoil Starter

Color Diagrams

  • EFI Engine Wiring Diagrams

And Much More…


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