Once drained, replace the plug securely, taking care not to overtighten, which could strip the threads. 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.
How to Change Lawn Mower Oil Correctly
Allow the oil to drain completely until the flow stops, as residual oil left in the pan will mix with the fresh oil and dilute its additives. Running the engine for a minute and then rechecking the dipstick catches any hidden air pockets that need correction.
Tighten the filter by hand, turning it snugly against the engine; overtightening can make the next change difficult and potentially damage the mounting surface. Neglecting this simple procedure leads to sluggish starts, reduced power, and eventually, a seized engine that could have been avoided with a routine service.
Step-by-Step Guide to Changing Your Lawn Mower's Oil and Filter
Before removing the old filter, apply a small amount of fresh oil to the gasket on the top of the new filter. 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.
More About How to oil change a lawn mower
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