Hand push lawn mower with a height adjustment assembly

A hand push lawn mower, comprising:

• a body comprising a cutting blade, a deck, a motor coupled to drive the cutting blade to rotate, a height adjustment assembly to adjust the deck to move up and down, and a grass baffle mounted to prevent grass clippings from splashing towards a back of the hand push lawn mower;
• when the height adjustment assembly adjusts the height of the deck, a position of the grass baffle remains substantially unchanged in a vertical direction.

A hand push lawn mower, comprising:

• a body comprising a cutting blade, a deck, a motor coupled to drive the cutting blade to rotate, a walking assembly comprising walking wheels and a first drive shaft for driving the walking wheels to rotate, a height adjustment assembly coupled to the deck to selectively move the deck up and down, and a grass baffle to prevent grass clippings from splashing towards a back of the hand push lawn mower;
• the height adjustment assembly comprises a second drive shaft which is rotatable relative to the first drive shaft for driving the deck to move, an adjustment handle for a user to operate, and a link mechanism connecting the adjustment handle and the second drive shaft, and the grass baffle is mounted to the second drive shaft.