Mercury Mariner Outboard 225 3 Litre Service Manual 1994, Page 188Get this manual
Troubleshooting IMPORTANT: Determine if Electrical Hydraulic problem existsHYDRAULIC SYSTEM TROUBLESHOOTING
IMPORTANT: Make one correct ion at timeCheck operation of trim system before proceeding to th next checkCONDITION OF TRIM SYSTEM ATrim motor runs; trim system does not move up or downPROBLEM
1, 2, 5, 10 2, 3, 1, 1, 3
Does not trim full downUp trim OK
CDoes not trim full upDown trim OKDPartial or "Jerky" downupnoise when shifting
FDoes not trim under loadGDoes not hold trim position under loadHTrail out when backing off from high speed
5,B9,10 2, 5,6 3, 2, 5, 8,9 1, 2, B, 3, 3, 4
1Leaks down and does not hold trim
JTrim motor working hard and trims slow up and downKTrims up very slow