Mercury Optimax 115, 135, 150, 175, DFI year 2000 and up service manual., Page 311Get this manual

Mercury Optimax 115, 135, 150, 175, DFI year 2000 and up service manual., Page 311

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POWERHEAD
If crankcase cover or cylinder block is to be submerged in very strong cleaning solution, it will be necessary to remove the oil system to prevent damage to hoses and check valves1 Tho