3 Blade Mower Deck Problems and Solutions

3 blade mower deck problems and solutions

It might be challenging to determine which mower is ideal when there are so many options available. Today you are going to read the complete 3 Blade Mower Deck Problems and Solutions [Essential Information]. You could have two or three blades to accomplish the chopping hidden behind the portion called as the deck. But are there drawbacks or advantages to a three-blade lawnmower?

Landowners and professional lawn care personnel may both benefit greatly from 3 blade mowers. Bigger areas may be cut more quickly with them, and the maintenance costs for their larger blades are lower. For smaller yards and locations with loose or damp soil, this bigger equipment might be problematic.

However, the three blade mower’s under deck design has more moving components than a two or one blade system, thus there are numerous potential trouble spots.  In order to assist you in making an informed choice while looking for your new mower, the following section examines the most typical 3 blade mower deck issues.

3 Blade Mower Deck Problems and Solutions

1. Weight

Three-bladed mowers and decks are notably bigger and heavier than their two-bladed counterparts. Not the blades themselves, but the size of the deck and the materials required to construct it are to blame.

If you currently have trouble lifting and moving a two-blade mower, a three-blade mower can be more difficult for you. Those who replace or sharpen their own mower blades may want to take this into account.

It should be noted that these tools damage grass more severely than lighter alternatives. Heavier can indicate ruts or soil displaced for people who struggle with water tables, moist soil, or sections of land that prevent the establishment of good grass.

2. Missile Refusers

Our mowers must only be used with the missile deflector in the bottom position. All of our mowers decks have a missile deflector to safely guide the flow of grass out through the side of the deck. In order to calculate the angles at which these things will be ejected, during our testing methods we insert steel balls and nails underneath the deck while the mower is operating. Every component must come out no lower than the knees in accordance with regulations. This deflector on the mower housing should always be placed correctly on decks. A claim for a replacement can be made if the deflector is absent from the mower for whatever reason after warranty claims.

3. Bagging Blocking

Concerns about the Bermuda grass bag or clipping collector are another concern that is frequently brought up. A third blade may obstruct the bag’s intake, making it less effective in collecting grass. There are also reports that some versions with a central third blade have intake obstructions.

However, certain bagger systems that are supplied alongside premium 3 blade mowers operate just well with these mower configurations.

The option is to purchase a power flow arrangement or an additional mower bagger adapter for your device.

4. Height adjuster

Along with other back and sides adjusters, lawnmowers will also come including front height adjusters. Every mower has a default setting, but this might not be ideal for your particular lawn, particularly if it is not on level terrain. Check to see if the height between the deck’s bottom edge as well as the ground is identical on both sides.

After repairing any unevenness in the deck, you will want to modify the cut or linkage mechanism. Typically, you modify using the linkages on the side of the device. on most versions, the control looks like a lever. To permit the best mowing, the front portion of the deck needs to be positioned at a different height from the rear. This is approximately a quarter and a third of an inch smaller at the very front of deck than the back.

5. Razor Blades

The owner’s handbook states that the blades must first have the proper component number for the mower and initial utilizing the tools. The rear side of the blade has the blade component number imprinted into it. The tempered, impact-only construction of MTD blades prevents them from breaking. Only when a blade is bent as well as the people operating the mower decides not to correct it will it break. The blade will begin to crack at the attachment bolt holes as it begins to vibrate.

By examining the fracture, it is simple to identify this issue on a mower blade. Rust will form the first phase of the fracture, and shiny, unrested metal will form the last phase. Frequently, the blade adapter will display signs of either a crack or one of the attachment ears twisted forward. Blades are built with a raised region behind the cutting tips that creates a lifting motion and pulls the grass up to the blade because they are intended to be high lift. More crucial to the cutting performance than even a sharp edge is the right lift.

6. Surface Speed

Insufficient time will be given for the mower to cut the lawn efficiently if your surface speed is too high. Choose a slow cruising speed with your gearbox and attempt to get the ideal speed to successful mowing ratio for your grass.

It is necessary to operate the mower’s blades at full power. For the majority of lawn mowers, the motor should be inspected and operating at 3400 to 3600 RPM if an RPM readout is obtainable.

High RPMs imply that the rotors will not only have adequate energy but will also aid to produce an air circulation that will draw the grass near the edges for more easier to reduce.


Mowing decks are able to grow to enormous sizes thanks to the three blades. Overall, they have greatly reduced the amount of time and money spent on mid- to large-sized mowing projects. Most decks are constructed nowadays with spindles spaced apart in a way that permits blades to overlap (albeit not significantly) regardless of how you position them.

As a result, it is futile to think excessively about deck time or three-blade mower position since the blades never stay in harmony and will fall out of rhythm well before you slice your first blade of grass.