| CPC A01D 34/78 (2013.01) [A01D 34/54 (2013.01); A01D 34/81 (2013.01); A01D 34/008 (2013.01); A01D 2101/00 (2013.01)] | 9 Claims |

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1. A grass mower comprising:
a traveling machine body comprising a driving source and a driving part driven by the driving source; and
a working machine body comprising a mowing blade, the working machine body being coupled to the traveling machine body, wherein
one of the traveling machine body and the working machine body comprises a support member including an upper member and a lower member, and
the other machine body comprises an insertion support member being insertable between the upper member and the lower member,
the grass mower comprising a coupling member that is couplable selectively in a first state where the insertion support member is inserted between the upper member and the lower member, and a second state where the insertion support member is mounted on an upper surface of the upper member or a lower surface of the lower member.
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