Yanmar Oil Filter Replacement
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1 - Loosen and remove drain plug .
2 - Allow oil to drain for several minutes. Be sure that all of the oil has drained from the engine because any remaining dirty oil will contaminate the new oil.
3 - Remove oil filter with a filter wrench or a pair of channel lock pliers. Some tractors may have shields that need to be removed before you can remove the filter. Be sure to remove the old filter gasket! Sometimes when you remove the oil filter the rubber gasket will not come off with the filter. If you install the new filter without removing the old gasket the two gaskets may blow out and suddenly start leaking- sometimes days after changing the oil!
4 - Make sure the filter housing is clean. Put a small film of oil on the new filter to help it get tight and seal. Screw the filter on as tight as you can by hand, then, with a filter wrench (never use channel locks on a new filter- they can damage the filter and cause it to leak) tighten an additional 1/4 turn or as directed on the filter.
5 - Replace drain plug and tighten. Do not over tighten or you could damage the threads in the oil pan! Fill with the recommended type and quantity of oil.
6 - Turn the key to the "on" position. Be sure the oil pressure warning light is lit up. Start tractor and watch for the oil pressure warning light to go off. If you do not get oil pressure within a few seconds shut off the engine and inspect for problems. You could cause serious damage to your engine if you run without oil pressure.
7 - Check for any leaks around filter and drain plug.