Yamaha Outboard Motors Factory Service Manual F6 and F8, Page 118Get this manual
POWER UNIT POWER UNIT CHECKING THE ENGINE OIL LEVEL
Check: Engine oil level (At engine stopped) Check if there is any Above fuel or water mixed with the engine oilIf no abnormality is found, drain the oil until the level is between and bBelow Add engine oil so that the level is between and b
REPLACING THE ENGINE OIL
1Remove: Oil filler cap Drain plug 2Install: Drain plug Drain plug: 24 (2.4 kgf m, 17.8 ft lb) 3Fill: Engine oil (into the crank case) Recommended engine oil: 4-stroke engine oil API: SE, SF, SG or SH SAE: 10W-30, 10W-40 Oil quantity: 800cm3 (27.0 US oz, 28.2 lmp oz) 4Install: Oil filler cap 5Check: Engine oil level Refer to "CHECKING THE ENGINE OIL LEVEL"