Small Engine Problems? Ask an Engine Mechanic for Answers ASAP
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This set does not have an oil filter, as it is splash lubed, rather than pressrue lubed.
With only 160 hours, if the spark plug looks good, it should be okay.
It is recommended to change it every 450 hours.
But the air filter shuold be changed.
150 hours is the recommended interval on it under normal operation.