OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Walk Behind Lawn Mower Frames Four Stroke Lawn Mower Frames How to Sharpen You Mower Blade & Change the Oil

Found this on YouTube on how to sharpen your mower blade and change the oil.

Good video Bruce,i don't bother locking the blade with wood, i use
a rattle gun but i realize not everyone has one.After i drain the oil i pour 300 ml of 10/40 into the engine before i put the drain
plug in, it helps remove sludge from the bottom of the engine. I wonder how many people change their oil once a year? If the oil
is not changed carbon deposits will mix with it then it will end us
a thick black paste which will damage engine components. I change oil twice a year to be safe.