Lawn Mower Knife 37092 Craftsman 421825 Replacement

Lawn Mower Knife 37092 Craftsman 421825 Replacement

Craftsman brand gas lawn mowers are a reputable professional-level machine that can handle large volumes of work in processing large areas and complex areas. With these devices, you can keep in order not only the courtyard of a private house, but also production areas, without spending special effort and time on this.

Gasoline mowers Craftsman (Craftsman)

The American company Craftsman, founded in 1927, began its activity with the simplest farm equipment. Since then, the Craftsman brand has taken the direction of constantly changing and improving product quality, ahead of its time and harmoniously adapting to consumer demand.

The company launched its first gas mowers in 1948, laying the foundation for mass production of diverse motor equipment.

Now lawn mowers. a standard of world quality, which is famous for its “indestructibility”, in which each instance in good faith serves several generations of users in a row.

Craftsman gas mowers can be:

  • Non-self-propelled, in which the motor drives only the working tool, and the movement of the unit on the mowed lawn is provided by the efforts of the operator.
  • Self-propelled with a drive to the chassis machines, which are in special demand for the highest working capacity and efficiency in fulfilling the volume of activity.

Both of them are represented by a wide range of models and their modifications for the convenience of choosing according to needs, the degree of complexity of the work and the presence of additional options. In addition to the overall high quality of components and parts, as well as increased productivity, they have a number of amenities and advantages such as quick start-up, continuous operation without overheating, noise suppression, etc.

Features of the device and operation

Craftsman lawn mowers combine a set of all the modern technologies applied to such equipment. That is why even non-self-propelled specimens give maximum productivity, incomparable with the work of similar devices of a number of other companies. Their device includes the following original elements that make these units powerful, maneuverable, highly efficient and easy to maintain:

  • Equipping 2 or 4-stroke engines with power from 4 hp Brand Briggs&Stratton or (in some cases) an alternative to Honda and Kohler with an upper valve arrangement, which contributes to a rational consumption of fuel and increased productivity.
  • The ability to quickly start with a key like KeyStart eliminates problems from the very beginning.
  • Platinum spraying used in spark plugs serves as a guarantor of the reliability of devices.
  • The original figured design of the cutting tool allows you to mow even stiff plant stems, and also creates a powerful airflow, literally dragging every single cut blade of grass into a special grass catcher.
  • It is possible to change the level of the knives to adjust the cutting height (up to 9 positions).
  • The removable grass catcher is reinforced with a three-layer nylon braid, which significantly increases its strength even for working with hard grass, and has an almost instant installation method provided by special Rear Door Interlock mounts.
  • High maneuverability and free work in areas of almost any terrain are achieved due to the increased diameter of the rear wheels.
  • In addition to collecting in a special compartment, the grass can be thrown out through the rear or side ejection, as well as fertilize the site when setting up for mulching.
  • The folding one-piece handle minimizes the size of the device when it is necessary to transport it, and in operation gives maximum convenience without loading the operator’s musculoskeletal system.
  • The Lo-Tone silencer mounted on the lawnmower reduces its noise to an acceptable level in the city.
  • The wear resistance of the unit is enhanced by the installation of a Maxi-Clean air filter.

The lineup

Craftsman gasoline mowers are conventionally divided into 2 mowing lines. self-propelled and non-self-propelled units, of which the former have a large volume of technical capabilities, and the latter belong to the economy class, although they also give high rates in lawn care.

Video: Lawn Mower Knife 37092 Craftsman 421825 Replacement

Lawn mowers are very popular today. They are used to keep the household plot, garden, decorative “field” in proper condition, and their owners often ask quite logical questions regarding how to increase the efficiency of the device and at the same time extend the operating life.

The answer to this question is quite simple. To do this, it is necessary to timely check the reliability and degree of sharpening of the knife for the lawn mower, and also, if necessary, change it in time.

Craftsman lawn mowers require special, original knives that can be either straight or curly. Also, in addition to knives, it is necessary to purchase suitable washers and rings, which contribute to the correct operation of the device correctly and allow you to quickly and reliably install the knife in place.

Craftsman Lawn Mower Device

As for the device of the Kraftman lawn mower, it is quite typical for this kind of equipment. The manufacturer made sure that its equipment was ideal for simple and safe use for its intended purpose.

The viscosity of the oil for the chainsaw chain plays an important role in the proper operation of the tool, read the details in this article.

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The device of the lawn mower consists of the following elements:

  • Wheel drive handle with control bracket;
  • Starter handle for starting;
  • Motor with silencer;
  • Fuel tank and air filter;
  • Grass catcher;
  • Knives
  • The system of regulation of the height of cutting the lawn.

Also it is imperative to check the mower for loose fasteners, because its device, if used improperly, can affect the quality of work, as well as interfere with the performance of the main function. And if you have not decided which lawn mower to choose, then we advise you not to hesitate and click here.

The principles of selection and characteristics of the knife

As a rule, the manufacturer always takes care that the basic configuration of its products contains all the necessary equipment to guarantee high-quality operation of the device. Craftsman must have two knives as standard equipment:

  • A sharp knife designed to trim the grass. It has wide blades and is unilaterally sharpened. This is necessary for a quality and quick cut of grass at a given height.
  • A special knife for mulching. He finely cuts the grass and passes it further to the grass catcher. You will find out how the mulching of a lawn by a lawn mower takes place here.

That’s what 100% never and under no circumstances can be saved, so it’s the choice of knives for a lawn mower. This is due, first of all, to the fact that the highest rotation speed, as well as significant loads caused by the resistance of grass stems, strongly affect the blade blades.

In the case when the stalks of the grass do not cut, but simply break, this can adversely affect the appearance of the lawn and even lead to its illness, or, so-called baldness.

Knocks on the knife often violate the entire balancing system of this device, and this, in turn, leads to strong vibration and damage to the bearings. Also the continuation of the chain reaction is often the failure of the bushings of the motor of the lawn mower and its wheels.

The principles of choosing knives:

  • Only trusted brands that cooperate with manufacturers of this equipment and guarantee a high class of quality knives should be preferred;
  • When choosing, it is necessary to give a report on how, how and where the device will be operated, what loads will be exposed. And only on the basis of these data, it is possible to give preference to certain variations of knives;
  • It is imperative to select knives for mowing and for mulching, it is necessary to take into account the specific features of each of them, their shape and type of sharpening.

Features of replacing the knife in the video.

Manufacturers and prices

For the instrument to function properly, it must be equipped with the appropriate knives manufactured under the CraftsMan brand. Knives of lawn mowers of different grades necessarily differ in a specific form, which is combined with the shape of the deck and helps to create optimal aerodynamic properties for mowing and assembling grass.

It is important to remember that the sharper the selected knives, the better they will cut grass, and that is a fact. And by clicking here you can learn about lawn mowers for tall grass.

Consider the most popular knife models:

  • CRAFTSMAN 942-0741. This type of knife is ideal for use in Craftsman self-propelled gas mowers. It performs the function of a cutting element, and thanks to its excellent work, the lawn is given a more beautiful and well-groomed appearance. The knife is made of steel. Its length is 21 ″. The price is about 1200 rubles.
  • CRAFTSMAN 421825. This knife is used for mowing grass. It is made of especially high impact steel. Its main task is the evenness and accuracy of mowing. It is characterized by a large resource of work and is able to last a very long time. The price is about 1300 rubles.
  • CRAFTSMAN 5321592-67. This Craftsman brand knife is a great option for the professional use of the mower. The most durable and sharp, withstands shock. The length of the knife is 22 ″. The price is about 1900 rubles.

Surprised that only one part of the unit can fly you a pretty penny? Then read this article in which you will learn how to assemble a lawnmower from a vacuum cleaner with your own hands, so your family budget will suffer less loss.


To summarize, it’s worth noting that the Craftsman lawnmower knives offer superior quality and reliability. The manufacturer of this brand made sure that the products were equipped with the best knives.

When making a choice in favor of this or that knife, you need to remember the specifics of this device, its intended purpose and the main loads that the lawn mower will be subjected to.