Common failures and elimination of brush cutter

by:Jiali     2020-06-26
Lawn is an indispensable important thing in our greening, but how can we make our lawn beautiful and neat? Then the brush cutter is indispensable. Many people will ask what to do if the brush cutter breaks down during use. Then the following afterburner will tell you how to remove the brush cutter. Common faults and elimination of brush cutter: 1. Vibration (1) The blade loses its dynamic balance due to bending or wear; (2) The crankshaft bends due to impact; (3) The coupling is damaged, causing the blade to rotate relative to the crankshaft, causing unbalance; (4) Loose engine fixing screws, etc.; (5) The engine base is damaged; (6) The blade hits a hard object. 2. Poor grass collection effect (1) Long-term use of grass-collecting bags has not been cleaned up, resulting in unclean and air-impermeable conditions leading to poor grass collection (2) The grass discharge opening is not cleaned for a long time, and the accumulated grass blocks the grass discharge opening, resulting in poor grass discharge; (3) The blade wears excessively, and the blade wings do not reach the grass-collecting effect; (4) The engine wears out, the power loss is too large, and the blade rotation speed is low, which results in poor grass collection; (5) The grass field is not flat, resulting in poor grass removal. 3. The engine is not stable Cause: The throttle is at the maximum position and the damper is open; the spark plug wire is loose; water and dirt enter the fuel system; the air filter is too dirty; the carburetor is improperly adjusted; the engine fixing screw is loose; the engine crankshaft is bent. Remedy: lower the throttle switch: press the outer line of the spark plug; clean the fuel tank and refuel; clean the air filter or replace the filter element; readjust the carburetor; check the engine fixing screw after the flame is turned off; correct the crankshaft or replace the new shaft. 4. The engine cannot be turned off Reasons: The throttle cable is properly installed on the engine; the throttle cable is broken; the throttle is not sensitive to movement; the flameout cable cannot be touched. Remedy: reinstall the throttle line; replace with a new throttle line; drip a small amount of engine oil to the active position of the throttle; check or replace the flameout line. 5. Unable to start in spring If the maintenance is not good in the spring after the winter, the reasons and countermeasures are as follows: (1) It may be that the oil in the fuel tank has not been exhausted for the first year, so check whether the fuel is qualified fresh oil; (2) Its role is to discharge the pulsed high-voltage electric discharge from the high-voltage wire (flame nozzle line), break down the air between the two electrodes of the spark plug, and generate an electric spark to lead the mixed gas in the gas cylinder. Many idle speeds are unstable, jittery, poor acceleration, insufficient power, frequent self-extinguishment at idle speed, and increased oil and gas consumption. This is due to damage to the spark plug. If the spark plug is dirty, it can be cleaned and severely damaged. Replace the same type of accessories. If you can't ignite, you can adjust the spark plug electrode gap, which is 0.6-0.9mm in winter and 0.9-1.0mm in other seasons; (3) If it is said that the carburetor was not burned before the fuel was used up last year, the carburetor should be cleaned (be sure to ask a professional to clean it); (4) Send it to a professional store for repair. 6. The muffler emits blue smoke Reason: Organic oil participates in burning. Remedy: After finding the fault, check the oil dipstick first to see if the oil is excessive. If excessive, let the excess oil run for another ten minutes. If the fault is still not eliminated, the engine needs to be repaired. 7. Weeding is weak Remove the air filter for cleaning, and replace it if it cannot be cleaned. Check whether the blade is sharp, if it is blunt, it needs to be polished. In addition, whether the lawn has thick and long leaves, if so, the size of the grass should be increased to reduce the load on the engine. 8. The pull rope rebounds when starting Advance ignition time is the cause of this failure. Usually because the blade hits hard objects when cutting grass, causing the flywheel key to be cut. At this time, the faulty machine should be repaired. 9. Self-propelled clutch plate is easy to wear In the process of using the hob mower, because the operator does not work according to the operation regulations, the self-propelled is often controlled by a click method, thereby increasing the wear of the clutch piece and eventually invalidating the self-propelled clutch, so the hob mowing During the use of the machine, the self-propelled handle must be adjusted into place at one time. 10. The lawn mower has poor row of grass Cause: The engine speed is too low, the grass is blocking the grass outlet, the grass is too wet, the grass is too long, too dense, and the blade is not sharp. Removal method: remove the grass in the lawn mower, cut after the lawn has water to dry, divide it into two or three times, cut only 1/3 of the length of the grass each time, and sharpen the blade. 11. Overheat damage The skirt is dry or white or light gray. In severe cases, the surface of the porcelain tube is partially loose and raised. The electrode is obviously ablated, there is a circle of ablation near the center electrode, and there are tumor-like particles adhered. Excessively flammable gas, low spark plug calorific value or air leakage, premature ignition or overheating of the gasoline engine can cause overheating damage. 12. Carbon deposition fouling It is recommended to hire professional maintenance personnel to inspect and repair each lawn mower every year before starting to grass for the first time. The main items of maintenance are: cleaning the carburetor, cleaning the carbon deposits in the combustion chamber, checking whether the high-voltage line is smooth, whether the gear box is working properly, etc.
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