Features of maintenance of the grass trimmer

The trimmer for grass is highly regarded by those who appreciate well-maintained lawns and yards. However, like any piece of equipment, it requires regular care and maintenance. Is it feasible to perform trimmer maintenance on your own? The answer is yes, users are capable of even performing minor repairs on the equipment.

Proper preparation of fuel mixture

Feeding a gasoline brushcutter with the right fuel mixture is of utmost importance. The fuel mixture consists of a combination of oil and gasoline, and each component has specific requirements. It is crucial to use high-quality two-stroke oil that is specifically designed for equipment with high operating speeds. It is forbidden to use motorcycle oil and oil designed for watercraft as they do not provide sufficient lubrication for the brushcutter parts. Stihl, Champion, and Husqvarna oils have proven to be reliable options. When it comes to gasoline, any high-octane pure gasoline with a density between 750 and 770 kg/m3, and a minimum octane rating of 92, will suffice. It is important not to store the gasoline in metal containers and ensure that it is free from impurities and additives. The gasoline should not be stored for more than one month. The fuel mixture is prepared by combining 20 ml/cm3 of oil per liter of gasoline. However, for the first five tanks of device production, the fuel mixture should be prepared with a ratio of 40 ml/cm3 of oil per the same amount of gasoline, and then transition to the specified ratio.

It is recommended to mix the ingredients in a plastic bottle, although it is advised not to keep it for longer than a few weeks.

Before using the mixture, it is important to shake it well. Take note of the color – if it has changed from aquamarine to a dark brown, then this transformation is not suitable.

1. Instead of immediately starting the engine at maximum speed, it is recommended to stop at the maximum torque.
2. It is important to avoid overheating, but it is also not advisable to mow with a cold engine!
3. It is essential to avoid overloading the engine. The throttle should be opened to 2/3 of the stroke.
4. After the breaking-in period, the oil should be drained.

Following these guidelines will ensure better lubrication of the piston components, resulting in prolonged operation of the entire device.

How to service the brushcutter correctly

The trimmer includes the following essential components:

• engine;
• cutting blades;
• nylon string (trimmer heads);
• angle gearbox;
• protective casings.

Maintaining the trimmer involves inspecting the operational state of each of these parts.

Engine care

When maintaining a gasoline engine, it is important to ensure that the air filter is clean – it should not contain any sawdust or dirt. The foam filter should be regularly lubricated with oil. Inspection should be performed on a weekly basis, and the filter should be replaced as needed. Before starting each task, make sure to check the tightness of nuts and screws. Additionally, it is important to clean the muffler and spark plugs from soot when they become dirty.

With the electric variant, it is enough to adhere to the recommended operating time specified by the manufacturer.

Maintenance of cutting disks

When it comes to disks, it’s crucial to highlight the importance of properly sharpening the blade edges. The sharpening process must be done correctly to avoid overloading the motor, which would ultimately shorten its lifespan. Additionally, it is recommended to regularly rotate double-sided disks by 180° to ensure even wear.

Monitoring the condition of the fishing line

What is the proper way to maintain the cord part? The essential aspect to consider is using a specially designed trimmer line for this purpose.

It is crucial to avoid replacing the trimmer line with metal ropes or wire, as this can lead to injuries.

• Regularly replace the trimmer line;
• Use the diameter specified by the manufacturer;
• Ensure the cord is tightly wound, without crossing over the coils;
• Regularly clean and lubricate the head;
• Be diligent in monitoring the wear and tear to prevent damage to the gearbox or shaft.

How to keep an eye on the bevel gear

The main responsibility of the user is to prevent the accumulation of dirt on the gear pair. This is important to ensure proper cooling of the part. Another requirement is to apply a grease (such as Husqvarna type or a similar product) specifically designed for the gear pair. Generally, performing an annual lubrication procedure should be enough.

What you should know about protective covers

Working without a protective cover is strictly prohibited – going about it unprofessionally can pose serious risks to the user as well as those around them. However, it is crucial to choose branded parts when selecting a protective cover, as it is not advisable to use non-branded alternatives. It is imperative to utilize the specific protective cover recommended by the manufacturer. Any damaged guards must be promptly replaced with new ones.

The hoods have the option to be connected to either the boom or the gearbox. There are two types of hoods available for the universal models, which can be used with both fishing line and a disk. In addition, the "fishing line" option can include a cutting plate that trims any excess cord. To summarize the main points discussed in this video about Hitachi brand brushcutter maintenance:

Repairing minor breakdowns

Almost anyone can handle small repairs. In the electric motor, users can only check the contacts or replace the brushes. Most of the microcircuit elements cannot be repaired without professional help.

To prevent breakdowns in a gasoline engine, it is necessary to blow air into the container before adding new fuel – this will remove exhaust gases. It is not recommended to heavily tilt four-stroke motors, as it can cause the oil supply to stop and render the engine inoperable.

If the trimmer’s motor breaks and the user is not knowledgeable in electromechanics, it is best to avoid trying to dismantle it and instead contact specialists.

However, you can handle such minor breakdowns on your own.

1. If the toggle switch is stuck, you have the option to replace it with a brand new one by yourself. However, it’s important to have some knowledge in electrical engineering basics and the capability to work with a soldering iron.
2. If the wire stopper has detached from the mowing head, you can make use of a flexible wire crafted from either copper or aluminum. Alternatively, it is possible to create a new attachment from stainless steel.
3. You can replace a broken fishing line yourself. For this purpose, select a nylon or kapron material, with a diameter ranging from 0.9 to 1.5 mm (it is advisable to know the measurements in advance). Manually disassemble the drum, wind the fishing line, and then reassemble it.

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For enhanced performance, consider replacing the plastic blades with stainless steel ones. These can be easily attached to the shaft using a bushing and a washer. This modification will enable you to efficiently cut through even the toughest grass.

To prevent situations with repairs, it is recommended to take preventive measures. In order to achieve this, it is advisable to follow the following guidelines:

1. To extend the lifespan of the semi-automatic reel, it is important to manually retract it more frequently. Additionally, avoid dropping or striking the reel on the ground.
2. Avoid using a household scythe for long periods of time. In the case of an electric scythe, you will notice this by the heated hood. However, it is recommended to avoid overloading both the motor and gasoline counterparts initially. The cutting blade should be installed only after using up one full tank of fuel.
3. Regular cleaning is crucial to prevent excessive moisture (which can damage the electric motor) or clogging (which can reduce the power of the gasoline version).

By handling the technique cautiously, its longevity will be significantly extended. Additionally, being observant of any indications of parts wearing out, it is sufficient to replace them promptly, thus averting a more severe malfunction.