Mercury Mariner Outboard 40/50/55/60 2-stroke Service Manual, Page 306Get this manual

Mercury Mariner Outboard 40/50/55/60 2-stroke Service Manual, Page 306

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Hydraulic System Troubleshooting Flow Chart TRIM SYSTEM LEAKS DOWN WITH MANUAL RELEASE VALVE CLOSED
Trim system does not leak downTesting complete
Remove PO check valve assembly, inspect O