Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-42794--1, Page 188Get this manual

Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-42794--1, Page 188

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Troubleshooting General
Problem Engine will not trim up or down Possible Cause Manual release valve not completely closedOil level low; air in system Determine if hydraulic pump motor operates w