Lawnmower repair: 110 photos and peculiarities of lawnmower repair with their own hands

Trimmer repair should be carried out as soon as possible when the first signs of breakage appear, so that minor malfunctions do not lead to more serious problems. All models are characterized by the presence of such basic nodes and structural elements: the drive system (motor), transmission devices, the working part (knife or fishing line), belts and handles. Breakdown can occur in any part, but some nodes fail much more often than others.

Trimmers working on gasoline or electricity (as well as different models from different manufacturers) differ in design and the nature of faults. Some of them can be easily fixed by your own hands, while others will require more extensive repairs or a call to a service center.

How to Disassemble the Gearbox on a Trimmer

It is believed that there is no universal grass trimmer gear lubricant, but this is not absolutely true. In fact, a suitable lubricant will be the one that contains the following components:

From time to time, in the midst of a busy mowing job, your grass trimmer starts making nasty, grinding noises. This complains about the lack of lubrication gearbox. the more actively loaded unit of the device. And these “warnings” can soon be followed by a jammed drive

What lubricant should be used for the grass trimmer gearbox?

During operation, the mechanical part of the grass trimmer is loaded with contact forces on the teeth, resistance reactions from grass clinging (sometimes. with dirt), dynamic, shock loads due to constantly changing torque. Grass trimmer gear lubricant must take full account of these features, so the selection of the brand must be strictly individual.

The following factors come into play:

  • Manufacturer’s brand. Each brand is not unreasonably focused on lubricants of its own making (we can talk about cheap Chinese products later). This applies to such manufacturers as Husqvarna, STIHL, Huter, Makita, etc. Russian-made grass trimmers are an exception: for example, Kalibr does not specify the lubricant brand in the user manual at all
  • Lubricant viscosity. It is known that all lubricating compositions are divided into three groups. high-viscosity (colloidal systems containing various additives), plastic compounds for universal use and solid lubricants that soften during operation.
  • Good adhesion to the surface of gear parts, so that the grease is not squeezed out into the gaps or out of the unit.
  • Lubricant consumption rate by a gearbox. here it is necessary to be guided by own experience and recommendations of experts as some trimmer manufacturers, trusting in existence of their own service centers, do not give any clear recommendations concerning period of operation of a gearbox between two lubrications.
  • What Chainsaw Numbers Mean
  • What kind of gasoline to fill up your Partner chainsaw?
  • Al-Ko Classic 3 Lawn Mower Overview.82 Se.
  • L 5300s Gasoline Mower
  • Rotary mower Kr 2 1m
  • Which STIHL or ECHO Lawnmower is Best?
  • How much Oil in Petrol for Gasoline in a Chainsaw
  • Gasoline lawnmower Husqvarna 128r Carburetor adjustment

How to take apart the gearbox of a brushcutter.lawnmower.gasoline trimmer

How to take apart a gearbox from a brushcutter.lawnmower.petrol trimmer.

Lubricant consumption also depends on the temperature at which it retains its lubricating power. When the gearbox is at least 40°C it is considered to be in a satisfactory working condition and is sufficiently lubricated.

  • STIHL Fs 38 Disassembly and Reassembly
  • Can I cut longitudinally with a crosscut saw?
  • How to start a STIHL 180 Chain Saw
  • How to take apart a Chinese chainsaw carburetor
  • Mtd Optima 42 Pb Gasoline Lawn Mower
  • How to choose a crosscut saw with a puller

It is believed that there is no universal grass trimmer gear lubricant, but this is not entirely true. In fact, a suitable lubricant would be one that contains the following components:

  • Antiwear additives that do not contain toxic lead;
  • Solid lubricants in presence of graphite or molybdenum disulfide (the latter is preferred as its lubricating power is fully retained for a large shaft speed range);
  • Mineral oils only (inorganic!) oils, with a high degree of purity.

Lithium greases Gear Grease OREGON or Champion EP-0, domestic compositions Oleo-Mas, Lithol fully meet the above requirements.24, or Azmol 158, as well as those recommended by the manufacturer of a particular model of grass trimmer.

How to Grease a Grass Trimmer Gear?

In the upper part of the body, where the gear unit is installed, there is a technological hole, which in the operation of the grass trimmer is plugged with a screw. This screw is unscrewed and 1.52 ml of grease is injected into the hole using the nozzle on the tube. If the grease was purchased in a different packing, a normal disposable medical syringe is also suitable for this operation.

You then refit the screw. This procedure, regardless of the user’s recommendations, should be performed every 1015 hours of operation of the grass trimmer in working mode. Other reasons to refresh or replace the gear lubricant are to do minor routine maintenance by yourself (e.g., cleaning and washing gear wheels before the summer season), to repair the unit, to preserve the grass trimmer for the winter, etc. д.

See also  How to start a Husqvarna mower

If a gearbox assembly is disassembled, it is recommended that the remains of previous lubrication be completely removed from the surface of the parts, even if there are no signs of oxidation and contamination. And only then do they apply new grease. After applying the lubricant, it is advisable to turn the shaft several times by hand and make sure that the lubricant is evenly distributed over all parts of the gearbox.

    Trend

    How to disassemble the gearbox of a grass trimmer

    In order to dismantle the gearbox of the grass trimmer you must.

    • Remove the gearbox from the pipe by loosening the two coupling bolts under the gearbox.
    • Wash the gearbox with a brush, e.g. in petrol without oil and dry it.
    • Use needle-nose pliers to bring together the ends of the retaining ring and take it out.
    • Take out the second locking ring in the same way.
    • Then it is necessary to heat the gearbox housing trimmer for grass, gearbox brushcutter or gearbox lawnmower industrial (technical) hair dryer at an output air temperature of 600 ° C.
    • After that, with a strong blow on a wooden bar on top of the gear housing, knock out the drive shaft with the bearing and pinion (first you should try to knock out the bearings without heating). Only hit with a wooden bar, because a metal hammer, for example, can break the housing.
    • In the same way we remove the drive shaft with the bearing and pinion (strongly heat the place where bearings sit and striking a wooden bar on the housing coaxial to the shaft, knock out the shaft with two bearings and pinion). How to disassemble the gearbox of grass trimmer, gearbox of lawnmower and brush cutter. To avoid heat, you can try to use a puller.
    disassemble, lawnmower, gear, trimmer, grease

    Assembling the grass trimmer gearbox is done in reverse order of disassembly (assembly after the purchase and replacement of failed parts). Assembling the reducer is much easier than disassembling. everything is assembled, literally, with your fingers. Sometimes you need to tap a little, put the snap rings in, and check if the drive shaft rotates by hand.

    If you have decided to replace the gearbox of grass trimmer with a non-original one, you should pay attention to the tube diameter for which the gearbox is designed (often 25.4 mm or 26 mm), the drive shaft diameter (often 8 mm), the size of the drive shaft square (often 5 mm or 9-tooth star) and fixing the protection on the gearbox, and also on the nut (with left thread, often M10x1).25).

    How to disassemble the gearbox of a grass trimmer

    To dismantle the gearbox of the grass trimmer.

    • Remove the gearbox from the pipe by loosening the two screws under the gearbox.
    • Wash the gearbox with a brush, e.g. in gasoline without oil and dry it.
    • Use needle-nose pliers to twist the ends of the circlip and take it out.
    • Remove the second circlip in the same way.
    • Then it is necessary to heat the gearbox housing of grass trimmer, brushcutter or lawnmower gearbox with an industrial (technical) hair dryer at an output air temperature of 600 ° C.
    • After that, strong blows with a wooden bar on top of the gear housing, knock out the drive shaft with bearings and gears (first it is worth trying to knock out the bearings without heating). Only hit with a wooden bar, as you can break the housing with a metal hammer, for example.
    • The same way we extract and drive shaft with bearings and gears (strongly heat the place where bearings are located and hit a wooden bar on the housing coaxial to the shaft, knock out a shaft with two bearings and gears). How to disassemble the grass trimmer gearbox, lawnmower gearbox and brushcutter gearbox. In order not to heat, you can try to use a puller.

    Grass trimmer gear assembly is performed in reverse order of disassembly (assembly after purchasing and replacement of failed parts). Reassembling the gearbox is much easier than taking it apart. everything is assembled, literally, with your fingers. Sometimes you need to knock on something, put the locking rings in place and check if the drive shaft rotates by hand.

    If you have decided to replace the grass trimmer gearbox with a non-original one, you should pay attention to the pipe diameter for which the gearbox is designed (often 25.4 mm or 26 mm), drive shaft diameter (often 8 mm), drive shaft square size (often 5 mm or 9-tooth star) and fixing the protection on the gearbox, and the nut (with left thread, often M10x1.25).

    Block: 3/4 | Number of characters: 1838

    How to Grease a Lawnmower Gearbox

    Buying any piece of machinery is sort of a lottery, but a lot also depends on the gardener. In caring hands the Chinese models also last a long time and do not let their owners down at a bad moment. And if you forget to timely lubricate the gearbox of brushcutters, do not clean filters, use cheap gasoline of poor quality, then the garden equipment from the most famous brands will be a headache.

    Gear lubrication of brushcutters is one of the most important elements of maintenance of gasoline grass trimmers, which should be performed directly by the user.

    Time and order of preventive maintenance of the gearbox

    I recommend the obligatory preventive maintenance of a new gasoline grass trimmer immediately after purchase, with the addition of grease to the gearbox. Despite the high cost of garden equipment, some manufacturers save and put only minimal amounts of grease during the running-in period.

    How often should you lubricate the gearbox of a brushcutter?

    It is often necessary to check the transmission once a year, at the beginning or end of the season, to add some liquid grease. If the gasoline grass trimmer is not used by you in professional quantities, it is enough.

    For larger mowing volumes the gearbox of a brushcutter needs to be lubricated every 20-50 working hours. If the operating conditions of garden equipment are hard, for example, mowing a large field at a time, and the mower has no time to cool down, or cheap lubricants are used, then the lubricant should be checked and added every 20 hours of work.

    Indirect evidence that you need to lubricate the gearbox can be overheating or increased noise of the unit.

    I also recommend the complete replacement of lubricant with disassembly and flushing of the unit when buying a second-hand gasoline grass trimmer.

    Gear lubricant for the gasoline grass trimmer

    Range of greases for garden equipment

    According to the instructions, you should use a special gear lubricant to lubricate the bevel gear. As a rule, manufacturers of garden equipment produce and recommend their brand of chemicals as the most adapted to their devices.

    At the same time, in order to reduce the cost of operation of garden equipment and increase the attractiveness of the brand of automotive chemicals, lubricants for garden equipment are usually made multifunctional. It is intended not only for the lubrication of 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.

    Such gear lubricant is sold in easy-to-use and easy-to-store tubes.

    Even if the specialized gearbox grease is almost completely worn out during operation, additives still create an effective lubricating protective film on the gear surface.

    It should be noted that many brushcutter owners on the expanses of the former CIS countries to lubricate the gearbox using regular Lithium-based Lithol-24 or grease for Cables. It’s easy to fill a gearbox with a 5cc medical syringe.

    The obvious advantage of using Lithium-based grease and Lithium-based grease in the transmission of a brushcutter is that it makes it cheaper to run. But there are nuances, because of which the spears are broken on forums of gardeners of the Internet space. My thoughts on what it is possible to lubricate with greases on a lithium basis and what not, read in article “Lithol as greasing a gearbox brushcutter”.

    How to grease a gearbox of a brushcutter or a gasoline grass trimmer

    Side bolt 17 on the gearbox of the petrol grass trimmer

    For safety reasons, all maintenance work on the brushcutter must always be carried out with the electric cap / plug removed from the spark plug to avoid accidental starting. Do not turn the weed trimmer upside down to avoid gasoline leaks.

    Remove the side screw on the gearbox of a brushcutter. Depending on the machine manufacturer, the hexagon socket head screw may be replaced with a hexagon socket head screw (often 17). The threads are ordinary, unscrew counterclockwise. Do not lose the sealing washer.

    If no grease is visible on the inside face of the screw, add 3 to 4 grams. Turn the gearbox by hand, reversing the direction of rotation to distribute the lubricant over the gears.

    Then replace the screw by tightening it securely.

    How to disassemble the brushcutter gearbox

    In order to dismantle the gearbox of a brushcutter you must.

    • Remove the reducer from the pipe by loosening the two coupling bolts under the reducer.
    • Wash the gearbox with a brush, e.g. in oil-free petrol and dry it.
    • Use needle-nose pliers to twist off the ends of the retaining ring and remove it.
    • Remove the second circlip in the same way.
    • Then the gearbox housing of brushcutters, grass trimmer or lawnmower gearbox must be heated by an industrial (technical) hair dryer at an output temperature of 600°C.
    • After that by strong blows with a wooden bar on top of the gearbox housing, knock out the drive shaft with the bearing and pinion (at first it is worth trying to knock out the bearings without heating). Hit only with a wooden block, as a metal, for example, a hammer can break the housing.
    • In the same way we extract and a drive shaft with bearings and pinions (strongly warm the place where bearings sit and by blows of a wooden bar on the case coaxially to the shaft, knock out a shaft with two bearings and a pinion). How to disassemble a brushcutter gearbox, lawnmower gearbox and grass trimmer gearbox. In order not to heat, you can try to use a puller.

    The brushcutter reducer is assembled in the reverse order of disassembly (after purchasing and replacing defective parts). Assembling the gearbox is much easier than disassembling it. everything is assembled, literally, with your fingers. Occasionally it may be necessary to lightly knock something loose, insert the snap rings, and check that the drive shaft rotates by hand.

    If you have decided to replace your brushcutter’s gearbox with a non-original one, you should pay attention to the tube diameter for which the gearbox is designed (often 25.4 mm or 26 mm), the diameter of the drive shaft (often 8 mm), the size of the drive shaft square (often 5 mm or 9-tooth star) and the mounting of the protection on the gearbox, and on the nut (with left thread, more often M10x1.25).

    Grass trimmer gets very hot Causes

    Grass trimmer gearbox. malfunctions, preconditions and troubleshooting

    Gearbox trimmer for grass (gearbox lawnmower, brushcutter reducer). a mechanical device located in the bottom of the trimmer for the grass (lawnmower or brushcutter) and created to transmit torque from the engine to the cutting equipment at an angle of 30 °, ensuring the operation of cutting equipment in the horizontal plane (parallel to the ground), and reducing angular velocity and increasing the output shaft torque in the ratio 1: 1.40 (for example, if the engine is running at 12k. rpm., The blade will turn at a speed of 8,600 rpm. rpm).

    Possible problems with the grass trimmer, lawn trimmer or brushcutter gear unit

    • Gearbox of grass trimmer heats up too much. Problem. Gear reducer of lawn trimmer and brushcutter has the same problem as grass trimmer. Causes of failure. lack of lubricant in the gearbox, unsuitable lubricant or a new gearbox not yet running in (when parts have not yet settled in). Grass trimmer repair with their own hands. add grease to the gearbox trimmer for grass, change the grease or okatatatat trimmer for grass in a sparing mode (work out three tanks of fuel with small loads and repeated stops for the natural cooling).
    • Gang trimmer malfunctions. knocking, free running and sticking when the gear shaft of a grass trimmer, brushcutter or lawnmower gearbox turns. Causes of failure. destruction of the 1st of the bearings in the gearbox of grass trimmer due to lack of lubrication in the gearbox, inappropriate lubrication, severe operating criteria of grass trimmer, damage to the bearings during their installation. Grass trimmer repair with your own hands. order bearings from your dealer and change them (there are two or three sealed bearings). for details see. How to take apart the gearbox of your grass trimmer / gearbox of your lawnmower / gearbox of your brushcutter” below.
    • Grass trimmer malfunction. gearbox is loose or comes off the trimmer tube. The causes of malfunction. mechanical damage to the gearbox housing. for example, if a piece of the body broke off when strongly hitting the knife on the heavy metal or stone (or if you destroy the gearbox housing, for example, a hammer during repair). Grass trimmer repair with own hands. change gear housing. Or, if a small piece has broken off, make an iron clamp to tighten the break. Repair lawnmower with their own hands similar to trimmer repair for grass.
    • Grass trimmer malfunction. the gearbox on the tube is not clamped. As practice shows, the gearbox does not fly off the pipe at all, but at a theoretical level it can fly off the pipe together with a rotating cutter. Lawn mower malfunction is like a trimmer. Causes of grass trimmer malfunction. wear of the gearbox mounting area on the tube (worn aluminum tube under the gearbox). Grass trimmer repair with its own hands. to wrap cloth tape on the tube under the gearbox or change the tube.
    • Trouble trimmer for grass. trimmer blade for grass completely did not start to turn (with the corresponding iron sound) or stops turning under heavy load (with a hard gnawing sound). Causes of malfunction. wear of teeth on bevel pinion in the gearbox of grass trimmer. Grass trimmer repair with your own hands. change pairs of bevel gears (a pair is replaced) in the gearbox. for details see. below “How to disassemble the grass trimmer gearbox / lawnmower gearbox / brushcutter gearbox”.

    How to Disassemble the Gear Gearbox Grass Trimmer

    To dismantle grass trimmer gearbox, you must.

    • Remove the reducer from the pipe by loosening the two coupling bolts under the reducer.
    • Wash the gearbox with a brush, for example, in gasoline without oil and dry it.
    • Use needle-nose pliers to twist off the ends of the circlip and remove it.
    • Remove the second circlip in the same way.
    • Then it is necessary to warm up the gear housing for grass trimmer, brushcutter gearbox or lawnmower gearbox with a factory (technical) hair dryer at an output air temperature of 600 ° C.
    • After that, knock out the drive shaft with the bearing and the pinion with a wooden block on the top of the gearbox casing (at first it is worth trying to knock out the bearings without heating). Only use a wooden block to tap the gearbox because you might break the housing with an iron hammer, for example.
    • Remove the drive shaft with the bearings and the pinion the same way (warm the place where bearings are seated and beat the shaft with a wooden block and knock out the drive shaft with 2 bearings and pinion in line with the casing). How to Disassemble the Gear Gearbox Grass trimmer, lawnmower gearbox and brushcutter gearbox. What not to heat, you can try to use a removable.

    lawn mower. Stops on a hot. Possible cause and fix.

    • Chainsaw Stops When You Start Sawing Published May 23, 2020.Why does this problem arise that the saw seems to be running normally, but suddenly the power goes out and the engine won’t turn.This video has been edited by YouTube Video Editor (https://www.YouTube.com/editor)my benz.
    • What to Cut Laminate at Home

    Hundreds of people decide to decorate their apartment or home with this flooring every day. Beginners usually have no questions about how to do the installation, as the laminate manufacturer provides detailed instructions and offers.

    disassemble, lawnmower, gear, trimmer, grease

    Versatility. A distinctive feature of power tillers. They will help to do a huge variety of work that the owners of dachas and rural homes. There are a number of different functions that can be performed with the help of countless tools.

    If you want to do something in your garage, make a unique form of transportation, this tutorial is for you. Here you will learn how to outfit your scooter with a gasoline engine. As a power unit, the author decided to use an unnecessary motor from a grass trimmer. Tho

    The gearbox is one of the most important hub systems in the engine block. It transmits torque from the engine to the wheels via a V-belt. The gearbox also controls gear shifting and equipment movement.The special.

| Denial of responsibility | Contacts |RSS