You know how to care for your lawn, but how about your mower? Mowers need some TLC after sitting in a cold shed or garage all winter long. Before grass-growing season gets into full swing, show your mower some love by giving it a tune-up and blade sharpening. The results are well worth the effort—treat your mower right, and it will reward you with greater efficiency, better handling, and a fresher-looking lawn. We've compiled an essential guide for keeping your mower—and your grass—going strong all season.