Honda Outboards BF40A/BF50A Service Manual, Page 254Get this manual
3MAINTENANCE 1ENGINE OIL
ASSEMBLY
HONDABF4DA-SDA
2ACCELERATION DEVICEDIAPHRAGM
1ENGINE OIL
INSPECTION
Used engine oil may cause skin cancer if repeatedly left in contact with the skin for prolonged periodsAlthough this is unlikely unless you handle used oil on daily basisit is still advisable to thoroughly wash your hands with soap and water as soon as possible after handling used oilKEEP OUT OF REACH OF CHILDREN[1]
UPPERLEVEL
LOWER LEVEL
1) Place the outboard motor in the vertical position2) Remove the engine cover3) Remove the oil dipstick and wipe it clean4) Insert it all the way down the dipstick hole, then pull it out
and read the oil level5) If the oil level is low, add the necessary recommended