Mercury Mariner 4 and 5HP 4-Stroke Outboards Service Shop Manual 1999, Page 135Get this manual
CYLINDER BLOCK AND CRANKCASE
Powerhead Removal
1Drain out the engine oil
2Remove or disconnect the following components: aStarter lock rodbChoke wire cThrottle Cables dStop switch, oil warning light and oil pressure wire connections eGround wires at the ignition coil and exciter coil wiresfFuel inlet hose3Remove the six powerhead mounting bolts and lift powerhead upwards