Honda B75K2-B75K3 Outboard Motors Manual., Page 45Get this manual
POST-SERVICE TESTS After overhauling this engine, inspect the following items :
1Engine oil Remove the oil filler cap with the engine upright and add SAE 10W-30, API standard (SD or SE) oilThe capacity is 0.8 (, (1.7 USpt, 1.4 Imppt)Then insert the level gauge in the filler hole and check to see if the oil level is up to the upper mark on the gaugeDO NOT screw in the gauge
2Gear case oil Remove the level bolt and drain bolt with the engine uprightUsing an oil tube, fill the gear case with SAE 90, API standard motor gear oil through the drain bolt hole until it comes out of the level bolt holeThe capacity is 0.184 (0.38 USpt, 0.32 Imppt)