baz":226qbsrr said:I have the R-25 and Yanmar 4BY2-150 engine. It's maintenance manual calls for the air filter to be replaced every 250 hours. I recall when having the engine's 250 hr service that the technician claimed replacing it was unnecessary, and he did not do anything to clean it or 'replenish' it.
So, should the air filter be replaced every 250 hrs and what would kind of visual inspection aspects would constitute the air filter needing to be replaced ? I have 330 hrs on the engine and the air filter looks clean and is functioning correctly as best I can determine.
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