Mercury Mariner 4, 5, and 6HP 4-Stroke Factory Service Manual, Page 148Get this manual
CYLINDER BLOCK AND CRANKCASE
7Disassemble the oil pan
- Screw M5 16 mmClampPipeScrew (2) M5 16 mmWasherSeal (2)BodyStrainerCupBolt M6 16 mm
- CoverSeatO-Ring SealSpringPlungerGrommetOil Pressure SensorExhaust Plate with GasketBolt (3) M6 20 mm