Use an oil filter wrench to loosen the filter, turning it gently until it breaks free. Before installing the new filter, apply a small amount of fresh oil to the gasket on the top of the filter.
Lawn Mower Oil Change Tools Required
Insert a funnel into the fill hole to prevent spills and debris from entering the combustion chamber. Using a socket wrench, carefully loosen the drain plug, turning it counter-clockwise.
During operation, oil breaks down due to the intense heat and mechanical friction, losing its viscosity and becoming saturated with microscopic metal shavings and debris. Old oil turns acidic, eating away at the cylinder walls and bearings.
Lawn Mower Oil Change Tools Required
Always disconnect the spark plug wire to eliminate the risk of the engine starting while you are working. Periodically check the dipstick—wiping it clean, reinserting it, and then checking the level—to monitor the fill status.
More About How to change oil on lawn mower
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