2003+ Mercury Mariner 225 HP EFI 4-Stroke Service Manual, Page 206Get this manual
Quality of the image is intentionally reduced!
TROUBLESHOOTING AND DIAGNOSTICS
3DMT 2000 Digital Tachometer Multi-meter 91-584009A1, DVA adaptor 91-89045-1
91-89045-1
91-584009A1
Page 3B-2