How to lubricate a lawn mowing gear. Gear lubricant
Buying any kind of equipment is a kind of lottery, but much also depends on the gardener. In caring hands, and Chinese samples serve for a long time and do not fail their masters at the wrong time. And if you forget on time grease gear lawn mowers, do not clean filters, use cheap low-quality gasoline, then garden equipment from the most famous brands will become a headache.
Lubrication of the lawn mowing gearbox is one of the most important elements of the maintenance of the gas trimmer, which the user must carry out directly.
Time and procedure for gearbox prevention
I recommend that you necessarily carry out the prophylaxis of a new gas trimmer immediately after purchase, with the addition of lubricant to the gearbox. Despite the high cost of gardening equipment, some manufacturers save and put grease only at a minimum, at the time of break-in.
How often to lubricate the lawn mowing gear
Often, a routine inspection of the transmission with the addition of liquid grease is carried out once a year at the beginning or end of the season. If the gas trimmer is not used by you in professional volumes, this is enough.
For large mowing volumes, it is necessary to lubricate the lawn mowing gearbox every 20-50 hours of operation. If the operating conditions of the garden equipment are difficult, for example, a large field is mowed at a time, and the lawn mower does not have time to cool down, or cheap lubricants are used, then the grease must be checked and added every 20 hours of operation.
Indirect evidence that it is necessary to lubricate the gearbox may be overheating or increased noise level of the unit.
In these cases, if during the inspection it is found that there is enough lubricant in the assembly by volume, then I recommend that it be replaced as a whole, while it is advisable to choose a different manufacturer of auto chemical goods.
Also, a complete lubricant change, with disassembly and washing of the unit, I recommend when buying a used gas trimmer.
Grease for gas trimmer gearbox
Assortment of lubricants for garden equipment
According to the instructions, a special transmission fluid grease should be used to lubricate the bevel gear. As a rule, gardening equipment manufacturers 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 the operation of garden equipment and increase the attractiveness of the auto chemical brand, grease for garden equipment is usually produced multifunctional. It is intended not only for the lubrication of gearboxes of gasoline trimmers, but also for the processing of hoses, gears and gearboxes of any garden equipment and mechanical devices operating under high loads.
Or Liqui Moly LM 47 MoS2. SHRUS grease with a special anti-friction additive. molybdenum disulfide designed for high-speed and loaded bearings.
This gear lubricant is sold in tubes convenient for use and subsequent storage.
Even if the specialized lubricant for the gearbox was almost completely developed 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 lawn mowers in the former CIS expanses use ordinary Litol-24 or lithium-based grease for lubricating the gearbox. It is convenient to refuel the gearbox with a 5-cc medical syringe.
Many motorists, instead of the side screw, pick up the threads and screw the grease fitting from cars that have served their crosspieces. This refinement allows the addition of Litol without disassembling the assembly using a grease gun.
An undoubted advantage of using Litol and lithium-based grease for refueling the lawn mowing gear is the reduction in cost of operation. But there are nuances due to which spears break on forums of gardeners of Internet space. My thoughts are on what can be lubricated with lithium-based greases and what is not, read in the article “Litol as a grease for a lawn-mowing gearbox”.
How to grease a lawn mowing gear, gas trimmer
17 side bolt on the gas trimmer gearbox
For safety reasons, in order to avoid accidental start-up, all preventive work on the lawn mower must be carried out with the electric cap / plug removed from the candle. Do not turn the trimmer over to avoid a gas leak.
We unscrew the side screw on the lawn mowing gear. Depending on the manufacturer of the garden tool, a turn-key bolt may be used instead of a hexagon screw, usually by 17. The thread is normal, turn off counterclockwise. Do not lose the sealing washer.
Add specialized grease
If no grease is visible on the inner end of the screw, add 3-4 grams. Turn the gear by hand, changing the direction of rotation so that the grease is distributed over the gears.
Repeat the operation several times. On average, about 5. 10 g are included in the gearbox. The assembly must be completely filled with grease, taking into account the installation of the screw.
Then reinstall the screw by tightening it firmly.
As you can see, it will not take a lot of time or special skills to lubricate the gearbox on the lawn mower. Usually we’re going to take longer than we do the full amount of preventive work. Reliable to you garden equipment. Share your experience with petrol trimmers in the comments.
Video how to lubricate the lawn mowing gearbox:
How To Oil To Lubricate A Trimmer Reducer
From time to time, in the midst of intense work on mowing the grass stand, your trimmer begins to make nasty, grinding sounds. It complains about the lack of lubrication gearbox. a more actively loaded unit of the device. And soon, these “warnings” may be followed by jamming of the drive.
What lubricant should be used for trimmer gear?
During operation, the mechanical part of the trimmer is loaded with contact forces on the teeth, resistance reactions from adhering weed (from time to time with grease), dynamic, impact loads due to a constantly changing torque. Grease for trimmer gear must fully take into account these features, because the selection of the brand must be strictly personal.
The following reasons are taken into account:
- Brand of the manufacturer. Any brand is not unreasonably oriented on lubricants of its own production (there is an option to talk about cheap Chinese products later). This applies to manufacturers such as Husqvarna, Stihl, Huter, Makita, etc. The exception is Russian-made trimmers: nettle, Caliber in the user’s annotation generally does not show the brand of lubricant.
- The viscosity of the lubricant. As everyone knows what remains to be done for our client, the lubricating compositions are divided into three groups: highly viscous (colloidal allowing accounting (software) containing various additives), universal plastic compounds and solid lubricants softened during operation.
- Not bad adhesion to the surface of the gear parts during busy> the grease is not squeezed out into the gaps or out of the assembly.
- Gearbox lubrication rate Here you have to rely on your experience and the advice of professionals, since some domestic manufacturers of trimmers, relying on the availability of their own service centers, generally do not give clear advice on the period of operation of the gearbox between 2 lubrications.
Video: Makita Trimmer Gear Lubricant
What kind of oil to lubricate the trimmer gear
Zmazuvannya reduktіv і lawn mowing shaft
Zmazuvannya reduktіv і lawn mowing shaft
It is believed that there is no universal lubricant for the trimmer gear, but this is not entirely true. In fact, a suitable lubricant will be one in which the following components are present:
- Anti-wear additives, which contain no toxic lead;
- Solid lubricants with the presence of graphite or molybdenum disulfide (the latter is better, because with all this, the lubricity is completely preserved for a huge range of shaft revolutions);
- Only mineral (inorganic!) Oils, with the highest degree of purification.
The mentioned requirements are fully met by Gear Grease OREGON lithium greases according to another Champion EP-0, Russian compositions Oleo-Mas, Litol. 24, or Azmol 158, also those recommended by the manufacturer of a particular model trimmer.
how grease gearbox trimmers?
At the top of the casing, where the gear block is installed, there is a technological hole, which during operation of the trimmer is plugged with a screw. This rumor has it that the screw is turned out, and 1.5. 2 ml of grease is introduced into the hole using the nozzle on the tube. If the lubricant was purchased in a different packaging, then for this operation a mundane, single syringe honey is suitable.
Then the screw is installed in its original place. This function, regardless of the user’s advice, should be done every 10. 15 hours of operation of the trimmer in operating mode.
Other reasons for updating, as it is also called changing gearbox lubrication, are independent performance of small routine maintenance (for example, cleaning and washing gears of a gearbox before summer), repair of a unit, preservation of a trimmer for a period of cold weather, etc.
If the gear unit is disassembled, it is recommended to completely remove the remains of the previous grease from the surface of the parts, even if it does not have any signs of oxidation and contamination. And only then apply new grease. After applying the lubricant, it is recommended to rotate the shaft manually a couple of times, and make sure that the lubricant is moderately distributed over all parts of the gearbox.
When lubricating, increased attention is paid to the following elements:
Trimmer Gear Lubrication: Selection Criteria
During operation of the gasoline trimmer, the gearbox begins to make grinding sounds, which are a sign of lack of lubrication, or loss of its properties.
Of course, the owner may not attach much importance to extraneous noise, but ignoring them will lead to jamming of the gears and, as a consequence, the upcoming costly repair.
Therefore, in order to avoid the prerequisites for the appearance of grinding, it is necessary to comply with the lubrication regulations of the trimmer gearbox recommended by the manufacturer.
Trimmer gear device
Regardless of the manufacturer or model, the modern trimmer is equipped with a gearbox to change the angle of transmission of mechanical energy between the drive shaft and the fishing line head.
Bevel gears are most widely used in gas scythes, because unlike spur gears, helical gears can bear enormous speeds, have smoother engagement and have increased bearing capacity.
The main parts of the trimmer gearbox
In the duralumin housing (1) there is a pinion shaft (2) and a bevel gear (3), pressed onto the driven shaft (4). To reduce the friction forces during rotation, rolling bearings (5) are installed on the bearing points of the shafts.
Any gear transmission is a highly loaded mechanism, the duration of which, the noiselessness and reliability of which depends primarily on the lubricant.
Therefore, in addition to the main components listed above, the trimmer gearbox includes a special hole through which bearings and gears can be lubricated without disassembling the assembly.
Grease for trimmer gear: which one to choose?
Gear paste selection
Currently, the market of gasoline powered tools and supplies has a wide selection of greases that are designed to reduce friction and overheating of rubbing parts.
Therefore, every owner when the time comes for maintenance is faced with a problem than to lubricate the trimmer reducer for its long-term operation.
For these purposes, special plastic pastes are used, which vary in properties and manufacturer.
Grease for famous brands of trimmers
Each brand of gasoline trimmers always recommends lubricant for the gas trimmer reducer of its own production.
- Husqvarna. This Swedish manufacturer recommends the use of Multi-Purpose Grease Grasa Universal. This material is available in tubes of blue and black in volume of 225 or 250 grams. According to the company, this trimmer gearbox grease was developed specifically for the Husqvarna technique, taking into account the steels used and the operating speeds.
- Stihl. For the Stihl FS series petrol scythes, the manufacturer recommends the use of Stihl Superlub FS gear lubricant, available in 225 gram tubes or disposable containers of 80 grams in silver-orange.
- Patriot. Lawnmowers of this brand are recommended to be serviced by the original Arsenal lithium grease of the AR-417 brand. It is specifically designed for geared gears operating at high speeds and temperatures.
- Huter. For the conical transmission of the tool models of this Huter company, you can use any of the above brands of gear lubricants, as well as universal types of Rezoil, TsIATIM and others.
- Champion. Champion Lawn Mowers User Manual recommends CHAMPION Super-Lube EP-O for recommended lubricants. The material is delivered in a 250 gram jar or in a disposable nipple Premium Champion C1104.
- Makita. This Japanese manufacturer advises its customers to use Makita branded grease, which comes in white tubes with a red cap of 65 ml and 80 ml.
Lawnmower Gearbox Grease Selection Factors
Often the owner of a particular brand of gas trimmer does not have the opportunity to purchase a lubricant recommended by the manufacturer for any reason. In such cases, you will need to search for an analogue, which in its properties will be identical to the branded paste. Therefore, when choosing a paste for a brushcutter reducer, you should pay attention to the following factors:
Brushcutter gearbox lubrication
- The viscosity of the lubricant. All pastes on the market are divided into three main groups, namely: highly viscous (contain additives), solid lubricants (soften during operation of the unit) and universal plastic compounds.
- Intensity of lubricant consumption. This factor is taken into account based on the personal experience of the owner, and is characterized by a period between two lubrications. Most manufacturers regulate servicing the gearbox every 20-40 hours of operation.
- The degree of adhesion to the parts of the gearbox. This indicator is characterized by the adhesion of grease to the metal of the trimmer assembly.
How to lubricate the trimmer gear
Disassembled brushcutter gearbox
Almost every lawn-mowing gearbox is equipped with a small technological hole, which is plugged with a special bolt during operation.
After thoroughly cleaning the unit of grass and debris residues, it is necessary to unscrew the screw and introduce from 1.5 to 3 ml of grease into the cavity of the gearbox, depending on the brand of the tool. For convenient dosage, you can use a traditional medical syringe.
During the operation, foreign particles and objects must not be allowed to enter the gearbox, as this can lead to intensive wear of the gear train, as well as its jamming.
Experts recommend at the end of the mowing season and long-term storage of the tool without work, disassemble the gearbox, flush the gears and bearings, and re-lubricate the assembly.
Trimmer gear lubrication: selection criteria was last modified: August 11th, 2018 by Administrator
Do-it-yourself how to disassemble, lubricate, replace or repair the trimmer gearbox
With frequent, intensive use of lawn mowers, the gearbox may start to warm up or make sounds uncharacteristic for its normal operation, for example, rattle. This indicates that the mechanism must be lubricated.
If this is not done on time, more serious problems will arise (for example, gears will quickly wear out and need to be replaced), up to jamming. With the transmission mechanism, other failures also occur.
Repair and lubrication of the gearbox can be done independently. for this you just need to get acquainted with the features of these works and stock up on some available tools.
Trimmer gear device
A trimmer reducer is a unit that transmits the rotational movement of the motor shaft to a knife or fishing line. It is located at the lower end of the bar. The transmission unit is also designed to lower the trimmer engine speed.
The mechanism depends on the model of lawn mowers from several gears rotating at high speed. As a result, they heat up due to strong friction.
If there is not enough lubricant, or there is none at all, the process leads to severe overheating and failure of parts, and, accordingly, the need for complex repairs.
To avoid this, lubricate the transmission unit in time. The disassembled gearbox is shown in the photo below.
Gearboxes of modern trimmers of different models from different manufacturers differ from each other in design and size of the seat. It happens:
lawn mowers are equipped with gearboxes with different types of gears:
- worm gears;
The drive shaft and gearbox are heavily loaded trimmer assemblies that are highly susceptible to wear.
Between them, the movement is transmitted due to the adhesion of the teeth of the gears located at different angles to each other.
Effectively the gear transmission works only if there are no mechanical damages. In this case, the mechanism should not overheat, otherwise it may jam.
The main malfunctions of the gearbox and how to solve them
With the gearbox of an electric or gas trimmer, various failures occur. The most common of them are presented in the table below. There you can find the causes of their occurrence and methods of elimination.