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.
Before we get into the nuts and bolts of the Honda 21-inch Variable Speed 4-in-1 Gas Walk Behind Self Propelled Lawn Mower we should point out that the model numbers HRX217VKA and HRX217K5VKA are used interchangeably by Honda to refer to this lawn mower and there do not appear to be any differences between the two. That said the best adjective to describe the HRX217VKA is powerful.
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.