In case of park time area concentration diagram longer, should at denovo praxis before commit to thoroughly maintain at a time, replace engine oil, machine to filter etc.
万一停放时间较长，应在重新使用前做一次彻底保养，更换机油、机滤等，并视情况检查燃油、电路等。
Out of the mouth of oil filter should often clean, jam in case.
出油口处的过滤网应经常清洗，以防堵塞。
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