A critical component of maintaining our little backyard (and front yard) farm is cutting and mowing the bits between the planting beds. I don’t like messing with gasoline engines, so I decided to get an electric string trimmer and mower.
As with any yard equipment you use frequently, my Black & Decker mm1800 Corded Electric lawn mower needs a few repairs. I’ve been using it now for 2 1/2 years without repairs, so it is due for a little attention.
The Black & Decker mm1800 electric mower (and all the other electrics in the Black & Decker product line) has a floating blade that sits on top of a fan unit on the motor shaft held down with a square washer and plastic blade insulator/spacer. The blades of the fan can be broken-off if you mow over a rock or other hard items (a ‘fairy house’ made out of broken pottery was the culprit the last time). The broken pieces bounce around under the mower and hit the plastic fins. Mine had just 4 fins remaining which throws off the balance of the blade unit causing the mower to vibrate like crazy.
Replacing the fan only requires 2 tools. You need a pair of adjustable Channellock pliers and a socket wrench to remove the bolt that hold down the blade and fan assembly. Once that is off, replacing the fan only takes a few seconds. This is also a good time to replace/sharpen the blade.
Other than replacing the blade, the fan, and the fan spacer, this is the only maintenance this mower has required in the entire time I’ve owned it. No filters, gas, oil, spark plugs, gaskets, or any of the other parts that need upkeep on a typical gas mower.