Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 305Get this manual

Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 305

POWER TRIM
Hydraulic System Troubleshooting Flow Chart
continued

Inspect memory pis ton Qring and cylinder boreCylinder bore appears smooth with no debris
Cylinder bore appears rough andor debris found in cylinder

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