Do I need to lubricate the trimmer gear

Action Sealing the gearbox

need, lubricate, trimmer, gear

Tightening the gearbox bolt

After the gearbox is filled with grease, tighten the gearbox bolt and clamp it well.

Gearbox maintenance intervals

It is recommended to lubricate the gearbox in two cases:

  • when buying it
  • before the start of each season

Required tools and materials

The following tools and materials are required to maintain the gearbox:

Hex wrench to open gear lubrication hole

Usually, such a key comes with a brushcutter or trimmer.

Medical syringe, 10 ml

The next tool is an ordinary 10 ml medical syringe. It is with the help of a syringe that the grease enters the gearbox.

In addition, you will need the lubricant itself.

It is recommended to use a proprietary lubricant from the brushcutter manufacturer. As a last resort, you can use any lubricant to lubricate rotating mechanisms, for example, Litol 24.

Action Open the gearbox

Loosening the gearbox bolt

In order to gain access to the gearbox, it must be opened. This is quite simple to do. you need to unscrew the gear bolt with a hex wrench. This bolt for all brushcutters is in the same place. directly next to the working body.

Open gearbox view

Action Fill the syringe with oil

Grease tube diameter does not match gearbox diameter

To mix the grease into the gearbox without any problems, you must use a syringe.

How to grease a STIHL gearbox

The plunger is removed from the syringe

First, the plunger is removed from the syringe.

A syringe is filled with lubricant from a tube.

Then the syringe is filled with grease from the tube.

The plunger is reinserted into the syringe

Then the plunger is reinserted into the syringe. The syringe is ready to fill the gearbox with grease.

Action Filling the gearbox with grease

The syringe is inserted into the hole of the gearbox

First, the syringe is inserted into the hole of the reducer.

Squeeze a little grease into the gearbox and turn it about a quarter of a turn

Then you need to squeeze a little grease into the gearbox and turn it about a quarter of a turn.

When all the grease has been squeezed out, the process can be considered complete.

The grease is filled in small portions. After each lubricant supply, the gearbox turns 1/3. 1/4 of a turn. It is advisable to select the amount of lubricant at each refueling so that the gearbox makes a full revolution during lubrication.

How to Lubricate the Trimmer Gearbox or Brushcutters: Proper Maintenance of Garden Tools | (Photo Video)

Many trimmer users do not pay much attention to the maintenance of their tools. In particular, this applies to a brushcutter unit such as a gearbox. The operation of the gearbox is associated with heating.

During long-term operation of the brushcutter, regular overheating of the gearbox occurs, which leads to its breakdowns. A breakdown of the gearbox leads to the fact that the tool is unusable and needs to be repaired.

Repairing the gearbox is an expensive undertaking, therefore it is recommended not to bring the tool to such a state. The main reason for the overheating of the gearbox and its failure is the lack of lubrication in it.

The article describes how to properly lubricate the trimmer gearbox to avoid damage.

What kind of lubricant to choose

There are several ways to reduce the frictional effect on the interacting elements of the grinder gearbox. The choice of how to lubricate the friction units is carried out from the following options:

  • the use of expensive special lubricants for gearboxes from well-known brands;
  • the use of universal compounds suitable for any power tool;
  • gear lubrication with lithol or grease;
  • use of self-made lubricant.

Application of special materials is the optimal solution. When choosing a lubricant for a gearbox, it is recommended to give preference to formulations produced under the same brand as the grinder itself. For example, if the machine is of the AEG brand, then the lubricant must be bought of the same brand.

When using specialized products, the service life of angle grinders is significantly increased, since the manufacturer takes into account all the features and nuances of operating its own equipment. The disadvantage of using branded materials is their high cost, which can affect the family budget.

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Most craftsmen use budget grinders or Chinese-made tools. For such machines, specialized lubricants have not been developed by the manufacturer and are unlikely to ever appear. However, this technique also requires maintenance. How to proceed in this case?

The most unfavorable solution is the use of lithol or solid oil, since both of these materials are not designed to lubricate friction units heated to high temperatures. Some owners of grinders use only these compounds, which is why their machines cannot last for the period of operation declared by the manufacturer. In an effort to profit from the here and now, they do not factor in future spending on a new tool or replacement of expensive parts.

The best lubricant for rock drill drills

How often do you need to lubricate the brushcutter gearbox?

In most cases, the application of the required portion of oil or its complete replacement is carried out once a year. before the start of the season or at the end of it. This is sufficient if the household trimmer is used for cutting grass about 3-4 days a month.

If the brushcutter is regularly used for mowing young grass in large areas, then the gearbox must be lubricated at least once every 30–45 operating hours. And if a trimmer is needed for daily mowing not only of young grass, but also of old tall, stiff weeds, then it is required to change the lubricant in its gearbox at least once every 20 hours.

The fact that the gas cutter gearbox needs lubrication will be prompted by factors such as increased noise and overheating. In this case, it is necessary to remove the mechanism, disassemble it and check the internal parts. If during the inspection it was found that there is enough lubricant in the assembly, then it must be replaced entirely. If there is too little oil, the operator will need to add the missing amount of lubricant.

Arsenal AR-401 (100 g) PATRIOT

Pros of Arsenal AR-401 (100 g) PATRIOT

  • Relatively low cost.
  • You need to squeeze out quite a bit.
  • Convenient packaging for use.
  • Retains dust well.
  • Not easily soiled case.
  • There is a hanging hole.

Cons of Arsenal AR-401 (100g) PATRIOT

  • Sometimes splashes from the cartridge on the wall.
  • It becomes very fluid when heated.
  • The cap of the tube has no relief. it is difficult to unscrew it in working gloves.

Makita 196804-7

Japanese brand lubricant designed to be applied to the shank and inside the chuck only. Produced in a white and red tube with the brand logo and index. The container holds 95 g, which lasts from a month to a year, depending on the frequency of use of the puncher. Soft tube walls make it easy to extrude and apply to tooling.

Pros of Makita 196804-7

  • Does not delaminate even after long storage.
  • During heating, does not turn into wax.
  • Produced directly in Japan.
  • Convenient squeeze packaging.
  • Tube fits easily into suitcase for transport.
  • There is a loop for hanging in a garage or other workplace.

Cons of Makita 196804-7

  • The cost is relatively high.
  • The white bottle is quickly stained.
  • The composition is not indicated on the packaging. it is difficult to find a similar one, but cheaper.

Husqvarna 2-stroke HP L

This two-stroke oil is specially formulated for tough working conditions. Among them are serious temperature fluctuations and the use of low quality gasoline. The lubricant contains additives that prevent deposits on structural elements, create the necessary fluidity and viscosity. Can be used for trimmers, chainsaws, scooters all season. It can be poured even in severe frosts. the crystallization temperature of the oil averages about 40 degrees.

The use of a 2-stroke engine lubricant will ensure uninterrupted functionality of the equipment even in high heat and in aggressive working environments. Possesses improved properties. the composition has stable protective characteristics, minimizes friction, which reduces the need for repair and maintenance.

Bison ZSB-125

Pros Bison ZSB-125

  • Relatively low cost.
  • Tube capacity. 125 g.
  • Large inscription “For drills”, so as not to be confused when servicing the gearbox.
  • Eyelet for hanging grease on a hook in the garage.
  • A thin layer is sufficient for SDS drills.
  • Nano-technologies were involved in the development of the composition.

Cons Bison ZSB-125

  • It is difficult to unscrew the cap with sweaty hands.
  • Liquid quickly.
  • Flies to the wall from the cartridge.
  • It is difficult to scrub off the wallpaper.

Is there a special grease for plastic gears?

Almost all manufacturers of lubricants have in their assortment compositions for plastic, and composites based on it. In theory, standard multipurpose greases can be used. However, not all of them interact normally with plastics.

  • When in contact with ordinary grease, plastic can lose strength and crack. The teeth are destroyed, the transmission unit fails.
  • The material of gears and toothed racks swells when interacting with some compounds. Jamming occurs.
  • The adhesion on the surfaces of the plastic gears is too weak, so standard greases do not hold and are splashed with vigorous rotation.
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Interestingly, some conventional greases that have proven themselves in metal gears are destructive to plastic gears. For example, when using grease, the teeth are erased, as if using an abrasive paste.

How To Grease The Flex Cable In Your Trimmer

For this reason, special adapted formulations are produced for plastic gears of gears and worm gears.

Another technical nuance: plastic gearboxes get hotter than metal gear pairs. This is due to the low thermal conductivity of plastic: heat is not removed from the working area.

In this regard, high-temperature grease for plastic gears must maintain basic properties, both in cold and hot conditions.

Device

The trimmer gearbox includes 2 shafts. the first is driven by the engine, and the other is used to rotate the cutting blade of the brushcutter or the electric trimmer line. Bevel gears are made as a single unit with the shaft, but there are versions with the installation of a separate part on a spline connection. Models are available with different tooth angles, which depend on the tool layout. There are modifications of gearboxes with worm, planetary or mixed (multistage) gears.

The shafts are mounted on rolling bearings, which are covered with protective washers. Parts ensure lubricant retention and prevent dirt from entering the working paths. The bearings are mounted in an aluminum alloy gear housing. The unit is detachable, consists of 2 symmetrical halves, which are connected with screws. To ensure the tightness of the joint, a separate gasket or sealant is used.

How to grease your stick equipment for long life

The lower trimmer gear is installed on the tool through the seat. There are several types of joint, differing in shape.

There are modifications of the tool with a square or multi-faceted joint of elements. The transmission of torque is carried out through a spline connection.

Malfunctioning electrical trim tabs

Since the device of an electric mower is much simpler than a motor trimmer, there are few reasons for its failure.

Basically, the trimmer stops working normally in the following cases:

  • malfunction of the electrical cable;
  • the control button is faulty;
  • burned out motor stator winding;
  • breakage of contact connections on the engine.

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How often do you need to lubricate the brushcutter gearbox?

In most cases, the application of the required portion of oil or its complete replacement is carried out once a year. before the start of the season or at the end of it. This is sufficient if the household trimmer is used for cutting grass about 3-4 days a month.

If the brushcutter is regularly used for mowing young grass in large areas, then the gearbox must be lubricated at least once every 30–45 operating hours. And if a trimmer is needed for daily mowing not only of young grass, but also of old tall, stiff weeds, then it is required to change the lubricant in its gearbox at least once every 20 hours.

The fact that the gas cutter gearbox needs lubrication will be prompted by factors such as increased noise and overheating. In this case, it is necessary to remove the mechanism, disassemble it and check the internal parts. If during the inspection it was found that there is enough lubricant in the assembly, then it must be replaced entirely. If there is too little oil, the operator will need to add the missing amount of lubricant.

If the engine won’t start

When the petrol cutter does not start, you must first check if the fuel in the tank has run out. If everything is in order, then you need to check its quality. perhaps you have purchased a cheap type of gasoline that does not fit the equipment. For the scythe, it is best to use good gasoline, which is purchased at gas stations, the brand should be at least AI-92.

It is not worth saving and buying cheap fuel, as this will lead to the fact that the cylinder-piston group will fail, and much more money can be spent on repairs than on high-quality gasoline.

It is also very important to properly prepare the fuel mixture and combine oil and gasoline in the right amount. The proportion should be stated in the manual

That is why it is so important that it be written in Russian, because there is a possibility that different mower models require slightly different proportions for successful operation.

It is not necessary to use the fuel mixture in large volumes, because if you store the unused volume indoors for a long time, it will lose its properties. Better to use a freshly prepared solution.

  • Dirt in the fuel filter can be a problem with the engine. The first step is to check the filter. If necessary, replace it. The inlet pipe must never be left without a fuel filter. It’s also worth checking the air filter at the same time. If it gets dirty, it must be removed, washed in gasoline and put back in place. If you are in the country or in a private house, then it will be enough to rinse it in clean water, using various detergents. Then rinse, squeeze out and let dry. The finished filter is moistened with a small amount of oil, which is used to prepare the mixture. Excess is removed by squeezing the filter with your hands. Then the part can be put back.
  • If all these procedures did not help and the engine still does not start, then you can try to adjust the idle speed, for this, start tightening the carburetor screw. This is very similar to tuning a similar part on a car. If there is no experience in regulating the carburetor, then you can study the videos on the Internet, which are very understandable and accessible. There they will clearly show how you can adjust the carburetor of petrol cutters with your own hands.
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Drive motors

Most mowers are equipped with a gasoline engine (ICE), it can be two-stroke and four-stroke, there is no particular difference in them. The four-stroke is more economical and powerful, but more difficult to maintain and more expensive to repair. The two-stroke is easier to maintain, cheaper, but less powerful, consumes more fuel, and has a dirtier and noisier exhaust. There are also combined engines. In addition to gasoline engines, trimmers can be equipped with electric motors that are connected to a 220V household network with a long cable, but, as a rule, these are household appliances as they are tied to the power wires to the network.

How to lubricate the gearbox of brushcutters, petrol trimmer

Side bolt 17 on the gasoline trimmer gearbox

For safety reasons, in order to avoid accidental starting, all preventive work on the brushcutter must be carried out with the electric cap / plug removed from the spark plug. Do not overturn the trimmer to avoid gasoline leakage.

Unscrew the side screw on the brushcutter gearbox. Depending on the manufacturer of the garden tool, instead of the hexagon screw, there can be a turnkey bolt, usually 17. The thread is ordinary, unscrew it counterclockwise. Do not lose the sealing washer.

Add specialized lubricant

If grease is not visible on the inner end of the screw, then add 3-4 grams. Rotate the gear by hand, changing the direction of rotation so that the grease is distributed over the gears.

Then reinstall the screw by tightening it securely.

Gasoline Trimmer Reducer Lubricant

Range of lubricants for garden equipment

Use a special transmission fluid grease to lubricate the bevel gear according to the instructions. As a rule, manufacturers of garden equipment produce and recommend the chemistry of their brand, as the most adapted to their devices.

At the same time, in order to reduce the cost of operating garden equipment and increase the attractiveness of the auto chemistry brand, the lubricant for garden equipment is usually made multifunctional. It is designed not only to lubricate the gearboxes of gasoline trimmers, but also for the treatment of hoses, gears and gearboxes of any garden equipment and mechanical devices operating under high loads.

This gear lubricant is sold in tubes that are easy to use and store.

Even if the specialized gear lubricant is almost completely depleted during operation, the additives still create an effective lubricating protective film on the surface of the gears.

It should be noted that many owners of brushcutters in the vastness of the former CIS use ordinary Litol-24 or lithium-based grease for CV joints to lubricate the gearbox. It is convenient to refuel the reducer using a 5-cc medical syringe.

The undoubted plus of using Litol and lithium-based grease for refueling the brushcutter transmission is a reduction in the cost of operation. But there are nuances due to which spears break on the forums of gardeners of the Internet space. My thoughts on what can be lubricated with lithium-based lubricants and what not can be found in the article “Litol as a lubricant for a brushcutter gearbox”.

Breakage of petrol trimmers

Typical breakdowns of a gasoline trimmer, which the owners of this unit most often encounter, are as follows:

  • engine breakdown;
  • carburetor problems;
  • fuel supply problems;
  • muffler malfunction;
  • breakdown of the gearbox;
  • the starter has broken;
  • air filter problems;
  • gas tank breather clogged.