Replacing a Blade on a Lawn Mower

Sometimes during lawn maintenance a small lawn mower hits obstacles such as stones or small rocks and this can cause problems for the blades. Pieces of it can come out and they no longer serve their purpose. When buying new blades a number of points should be borne in mind, and as with all the troubleshooting it is best to be well informed before starting.

Replacement blades must be the correct size. Otherwise, your repair will be in vain. The number or name of the equipment’s model often includes the length so it is just a matter of examining the equipment and finding the correct number. Generally the typical one would have blades of 19 or 22 inches. Another important part to examine is the shank, which is the part of the equipment to which the blades are attached. The size of the shank is important because the hole in the center of it must fit onto the shank correctly. If you have the information about the model and number of the mower the dealer at the shop will find the correct lawnmower parts and give advice on lawn mower repair and maintenance.


Lawn Mower Repair Basics: Types of Mower Blade

Any particular model and blade is likely to have numerous substitutes made by other manufacturers so there will be quite a wide choice when purchasing lawnmower parts. Pot metal ones should be avoided because they have a tendency to break apart when they strike large sticks or stones. This can be dangerous as the pieces can fly into the air at quite a fast speed and easily strike the person performing lawn maintenance or bystanders. To be safe, it should be constructed from hardened steel. They can be sharpened several times during their useful life. The shop will have details about the mower blades and the basics of lawn mower repair. They can advise on parts for the lawn mower during mower maintenance.

There are different types of blades. The type of blade on most push ones is a standard blade bent slightly at both ends and with the sharp cutting edge on one side only. During lawn maintenance the cutting edge of the blade would be a part of the edge that is bent and facing the same way that the blade is moving as the push lawn mower travels across the grass. From the perspective looking from above the mower the blade would appear to be turning in a clockwise direction.

Generally the one on a small equipment would have a cutting blade that expels the grass by lifting or sucking, or alternatively it sends it of grass out sideways away from the mower as it is propelled along the grass. For the straightforward task of cutting the grass down to the required length this is adequate and this is the correct blade for the task.

It is also possible to buy a super lift or offset blade that permits a faster suction allowing the lawn maintenance to be performed more quickly. This type of blade can be identified because the blade is more clearly bent and has heavier notches on the side of the blade where the cutting edge is found. This type may require more work because each cut of the grass covers a smaller area and more swipes of the push ones are required to complete the task. If the grass that has been cut is intended for mulching or animal feed after it has dried out a different type of blade would be needed.

A distinct form of mower blade is required for lifting and suctioning the grass into the bag if the purpose is for mulching. Mulching ones have different features to those found on blades just intended for lifting and cutting the grass. The ones used for mulching can be identified because the bend on each end of the blade is deep and wide and the edge is more extreme.

Studying Mower Blades for Lawn Mower Repair

Selecting the correct blades depends on knowing the purpose for which they are to be used and on identifying the correct ones for the task. If the maintenance is performed using the correct blades the result will be a lawn that is the envy of neighbors and visitors. This is a good incentive for doing a little bit of study on how to repair the machine and on purchasing the correct parts for your equipment. As with all repair and troubleshooting, safety considerations should be most important when buying blades.