Installation and adjustment of the two-handed, bicycle handle of a brushcutter
Proper installation and adjustment of the two-handed, bicycle handle of a brushcutter or handle is one of the stages of adjusting the attachment of the gasoline grass trimmer on the backpack belt. It affects not only the safety and comfort of mowing with the chain saw, but also the quality of the work. If your hands are bent, constantly straining, and your back is in an unnatural state, then after 10-20 minutes of mowing you will not care about the quality of the lawn. But to finish it as quickly as possible somehow. In principle the following rules are suitable for fixing any types of trimmer handles: circular (D-shaped), bicycle (U-shaped) and J-shaped, as well as their varieties with an offset center relative to the boom.
In this article we will look at the installation and subsequent adjustment of the bicycle handle of the grass trimmer and in particular on the example of the Solo 109B / 111B series brushcutter.
Installing the lawn trimmer handle.
As a rule, when you buy a gasoline grass trimmer, a handle mount is already attached to the support leg. You only need to unscrew the top cover and install the bike handle without clamping it all the way. The fastener can be a quick-release screw, wing screw or fixing bolts.
The right side of the brushcutter handle should be as close as possible to the brushcutter bar.
If you have a model that has two handles, you can simply loosen the clamps on the fasteners to install the two halves. The right half of the handle will be shorter than the left half. The advantage of this handle is that the angle of the left and right hand sides can be adjusted independently of each other.
Caution: When mounting a two-handled lawnmower handle, always keep the gardening equipment to the right of the gardener’s body!
Minimehanik
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Grass trimmer Zipper, ECO, Shtenli, gas handle repair.
Last time we replaced the cylinder and piston on an Austrian Zipper chain saw. During the repair, we found that the gasoline trimmer is the absolute analogue of many, mostly made in China trimmers, such as: ECO, Defort, Eland, Skiper, Groser, Gunter, KW, Shtenli, Belarus, Ural, Patriot, etc. That’s why all mentioned below apply equally to these brands of chain saw handles.
According to a customer the handle does not work properly, he disassembled it, the springs had jumped out, but he did not notice how they were there. After reassembling the handle trigger began to stick, when fully pressed it did not return to its original position, the trigger was not blocked by the button when pressed, trigger safety button stopped working.
Both springs installed incorrectly. The person who assembled the handle planned that the main trigger spring will interact with the second part of the handle body.
The second part of the spring is supposed to catch on the plastic side of the handle body, marked with a red arrow.
Either during assembly the spring did not catch on the board in the intended place, or then due to vibration it went out of engagement, as a result the trigger failed and stopped returning to its original position.
The second spring, the spring of the trigger lock button in the pressed position, was also incorrectly installed and did not perform its function. That’s why we completely disassemble the handle.
Repair of lawnmower throttle handle with their own hands
Details: lawnmower throttle handle repair with his own hands from the real master for the site olenord.com.
An indispensable tool of the modern dacha owner or owner of a private house is a lawn mower, which allows you to effectively and efficiently bring the adjacent territory in order. The period of active use of brushcutters falls in late spring until October. Modern units are equipped with a powerful and durable engine, reinforced transmission and basic units. Despite this, physical wear and tear, manufacturing defects or improper use leads to grass trimmer failure. In order to perform Grass trimmer repair with your own hands, you need to have at least basic knowledge in the field of technology and a little experience in its repair.
The main component of any gasoline-powered tool is the internal combustion engine (ICE), which transmits the torque to the actuator by various means. In the modern gasoline mower as an element of the transmission between the motor and the trimmer head is used duralumin rod (pipe), inside which the drive shaft is located.
Thanks to the highly revolving engine, the rotation frequency of the line can reach 13 thousand revolutions per minute, depending on the manufacturer of the grass trimmer. In order to avoid mechanical and thermal damage to the reducer, its housing has a special hole for the introduction of grease in the form of ointments. All brushcutter models are equipped with a sturdy shoulder strap as a headset to make it easier for the owner during long hours of work.
Regardless of the manufacturer, almost every model comes with a fishing line and steel blades.
PVC line cross section for the weed trimmer may vary from 1.5 to 3.0 mm.
Made of tough polymer, it is subject to heavy wear and tear while mowing. Therefore it is necessary to check from time to time whether there is any line in the head and if necessary to change it. It is recommended to buy an extra bobbin to quickly replace it with a spool of line that has run out.
Grass trimmers with an engine on the market today are equipped with D-shaped, U-shaped or T-shaped handles, which contain the main controls of the device. For example, a clutch with a U-shaped handle has the throttle control and a stop/start toggle switch on the right handle. The D-handle design has the throttle adjustment key directly on the boom.
In view of the presence of many nodes and parts, grass trimmer repair with their own hands involves the elimination of failures that prevent its normal operation. It is worth noting the most basic faults of gasoline lawnmowers:
- The grass trimmer engine does not pick up speed;
- Failure of the cylinder-piston group (CPG);
- Ignition failure;
- There is no connection between the engine and the trimmer head;
- Mechanical knocks when the machine is working.
- Repair of grass trimmer’s cylinder gear
The main component of any internal combustion engine is a cylinder and piston group (CPG), which can fail due to component wear and tear or low-quality fuel mixture.
The chain saw lubricates by adding a certain percentage of oil to petrol. This process may be impaired by old oil precipitating in the form of sludge. In this situation, when starting the grass trimmer, the motor overheats severely and in a matter of minutes, the most expensive breakdown occurs. To fix the problem you need to replace the whole cylinder, i.e. the piston, packings, cylinder and piston rings. If you are not a master of internal combustion engine repair and do not have experience with technicians, it is unlikely to fix the engine without the help of a specialist. Detailed steps to repair the piston grass trimmer can be found here.
When the lawn mower ignition fails, the spark on the spark plug is lost and, as a result, the fuel mixture does not ignite.
It is important not to rush with the replacement of the coil in this situation, because the cause of the failure may be a lack of contact in the switch on the control knob.
An important point when searching for faults in the grass trimmer ignition will be the diagnosis of the mesh, where the distance between the lateral and the central electrode should be 0.5-0.7 mm. In addition, it is necessary to pay attention to the steel o-ring on the plug, the loss of integrity or deformation of which can lead to etching of air from the combustion chamber and, consequently, to a reduction in the power of the grasshopper.
If replacing the check of the electrical circuit, the plug and its contacts did not give positive results, then it is worth paying attention to the ignition module of the grass trimmer, namely the gap with the flywheel. Regardless of the design and manufacturer of the lawnmower, the distance between the ignition coil and the flywheel should be no more and no less than 0.2 mm. To restore the optimal value of the gap will need to relax the bolts fixing the coil and with a special measuring probe expose the ignition of the trimmer for grass.
A clear sign of engine power system malfunction is the absence of traces of fuel mixture on the electrodes of the spark plug, which may be due to the following defects:
Components of the fuel system of the grass trimmer
- Due to the clogged hole in the gas tank, a vacuum is created, which prevents the normal flow of gasoline into the carburetor;
- fuel filter in the tank is blocked because of low fuel quality and particles;
- No mixture entering the combustion chamber as a result of a clogged carburetor.
You can quickly determine the cause of the malfunction by removing the fuel hose that leads to the carburetor. If fuel mixture comes out in a thin stream, you should pay attention to the carburetor. If there is no trickle, you need to clean the breather plug (the small hole in the fuel tank lid) with a fine needle or replace the fuel filter.
If the fuel flows into the carburettor you need to clean or adjust it. Adjusting the grass trimmer carburetor involves restoring optimum fuel mixture mixing.
Grass trimmer carburetor with adjustment screws
For this purpose pay attention to three regulating screws: maximum speed (H), minimum (L) and idle speed (LA). Before you start, you have to tighten the screws H and L fully and loosen them each by 1 turn. After we start the mower and let it warm up for 10 minutes to regulate the power system in the working mode. After the engine is warmed up, press the gas pedal button to the stop (12 000 rpm). We restore idling by unscrewing the LA screw. As soon as the grass trimmer head starts to rotate, you need to tighten the screw until it stops.