Fresh oil lubricates the engine's moving parts, reduces friction, and carries away heat, preventing the tiny metal components from grinding against each other. As it degrades, it becomes contaminated with dust, metal shavings, and moisture, turning from a slick lubricant into a gritty abrasive that actually damages the very parts it is meant to protect.
Choosing the Right Oil for Your Lawn Mower Engine
Tip the mower on its side if necessary to access the drain plug, but be mindful that air filters and carburetors can be sensitive to being submerged in oil. Disconnect the spark plug wire and lay it aside to prevent any accidental starts.
Neglecting this simple procedure leads to poor performance, expensive repairs, and a significantly shortened machine lifespan. You must ensure the machine is completely off and secure before getting anywhere near the undercarriage or oil drain plug.
Choosing the Right Oil for Your Lawn Mower Engine
Draining the Old Oil Locating the oil drain plug is usually straightforward; it is typically a large bolt at the bottom of the engine's oil reservoir. Allow the oil to drain until it stops flowing completely before proceeding.
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