With the mower still on its side grab your socket wrench and wood block. Place the block inside the blade well. This is to prevent the blades from turning while you loosen their bolts. Remove the blade mounting bolt/bolts. A typical mower will have one blade like the Craftsman 37700 I serviced for this guide (one mounting bolt). Some like my Honda HRR216VKA have two blades an upper and a lower (two mounting bolts). Each blade should have at least two cutting edges.
The Greenworks 20-inch 12 Amp Corded Lawn Mower has a lot of features that can make your mowing experience enjoyable. Since it is corded you dont need to stop to recharge a battery or gas up. It is a three-in-one that has mulching side discharge and rear bagging capabilities. There are seven cutting height positions ranging from 1.5 to 3.75 inches and you can adjust the height with a single lever. Plus the 10-inch rear wheels 7-inch front wheels and 56-pound size make it easy to push around the yard.
About 86% of the buyers who reviewed the Honda HRX217VKA on Home Depots website gave it four or five stars. Handyman left the most helpful review after using his mower for one year. He noted that its the best mower he is ever owned because of the adjustable speeds for the self-propel controller. He goes top speed and has to walk briskly to keep up. Other buyers remark that the mower cuts well after just one pass and doesnt leave stragglers clumps or lines. One buyer was impressed with how it could even handle unkempt grass over six inches high.