Reel mowers are most commonly used on turf such as bent grass and Bermuda grass because of their ability to achieve a lower mowing height than a rotary mower. Just like a rotary mower, the blades of a reel mower need to be sharpened. But the sharpening method is very different on a reel mower. The good news is that you can easily sharpen a reel mower with a little spare time and a few tools.
Lay the reel mower on its side. Pop off the side cover on the wheel with a flat-head screwdriver.
Using a flat-head screwdriver, pry off the C ring that secures the wheel.
Pull off the wheel and remove the gear that is under the wheel. You won't need any tools to remove these.
Slide the crank over the shaft that the gear was on. Dip a paint brush into a sharpening compound, and liberally paint it all over the reels.
Grasp the crank, and turn the reel backward. Keep turning the crank until you see a shiny, smooth metal edge on all the blades.
Remove the crank from the shaft, and put the gear and wheel back on. They will slide on in the same manner that you took them off. Push the C ring back into place with the screwdriver, and pop the plastic cap back on. Your reel mower is now sharpened.