| CPC A01D 34/733 (2013.01) [A01D 34/008 (2013.01); A01D 2101/00 (2013.01)] | 12 Claims |

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1. A lawn mower, comprising:
a shaft rotated by a drive source;
a blade;
a blade holder fixing the shaft and the blade, the blade holder comprising:
a holder base holding the blade;
a holder adapter holding the shaft;
wherein the holder adapter includes a fragile part monolithically formed therewith,
wherein the blade has an insertion hole for inserting the fragile part, and
wherein the holder base is able to rotate relative to the holder adapter upon shearing of the fragile part.
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