Annual maintenance on Gravely zero turn mower.

The annual maintenance is performed on a 2009 Gravely zero turn mower with a Kohler Courage twin cylinder engine. The oil filter and engine oil is replaced along with the air filter. The spark plugs are removed, inspected and and the gaps are checked. While the mower brand in this video is a Gravely, the work on other brands will be very similar.
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Kohler items listed are for the Kohler Courage SV-710-740, 20 Hp Twin Cylinder.
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Oil drain hoses:
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Generic 3/8”: amzn.to/3Jgd94n
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