Placing the mower on a level surface ensures that the oil will drain completely rather than pooling in one corner. Using the correct type and amount of new oil is critical, as the wrong viscosity or overfilling can damage the engine just as severely as using old oil.
Properly Dispose of Used Oil to Protect the Environment
Tighten the filter by hand, turning it snugly against the engine; overtightening can make the next change difficult and potentially damage the mounting surface. By adhering to a schedule of oil changes, you preserve the engine’s clearances and maintain the hydraulic pressure needed for the valves to function properly.
Add the remaining oil gradually, stopping once the level sits within the optimal range. Running the engine for a minute and then rechecking the dipstick catches any hidden air pockets that need correction.
Properly Dispose of Used Oil to Protect the Environment
Replacing the Oil Filter When Your Mower Uses a Filter If your mower is equipped with a replaceable oil filter, you should change it with every oil change. Pause to check the dipstick, wiping it clean and reinserting it to get an accurate reading.
More About How to oil change a lawn mower
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