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Re: yanmar 4JH45
Mathematically, if you have X to the negative 1 power, it's the same as dividing by X. ie minutes to the negative 1 power (min^-1) is the same as dividing by minutes.
Revolutions per minute is the same as saying revolutions divided by minutes. Minutes to the negative one power is, therefore, the published value "per minute". That's my take.
Stupid way of putting it in an operators manual.
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