Common faults and maintenance methods of brush cutters

The brush cutter is a common tool for garden craftsmen, and it is inevitable to encounter various problems in the process of using it. When the brush cutter is difficult to start, we should comprehensively analyze and investigate from the three aspects of oil, gas and electricity. Today, I will tell you about some common faults and maintenance methods of brush cutters.

        Difficulty starting the engine

The brush cutter engine is difficult to start and may have the following problems:

a. No gasoline - the solution is to add gasoline.

b. The spark plug wire falls off - the solution is to connect the spark plug wire.

c. The accelerator switch is not in the starting position - the solution is to adjust the accelerator switch to the maximum.

d. The oil circuit is blocked - the solution is to clean the oil circuit.

e. Ignition misalignment - solution to correct the ignition timing.

f. The spark plug is damaged - the solution is to replace the new spark plug.

g. Use inferior or deteriorated gasoline - the solution is to choose the correct grade of gasoline.

H. The blockage of the air filter can also easily cause difficulty in air intake, which affects the start of the brush cutter. Therefore, brush cutters should frequently clean or replace the air filter cleaner, use qualified gasoline, and adjust the spark plug gap and engine.

       ragged trim

Rough trimming and no smoothing is generally due to dull blades. Therefore, brush cutter blades generally need to be ground once every ten days of use, and hob blades can extend the grinding frequency to once every three months.

Vibration at work

If the brush cutter trembles or vibrates violently at work, it may be that some hard objects are hit during the mowing process, causing the blade to curl and deform, which will cause the lawn mower to vibrate. Additionally, a top-heavy blade grind can also cause the brushcutter to vibrate. Therefore, the blade of the brush cutter should be ground into a horizontal state on the left and right sides. During use, pay attention to the condition of the lawn and try to avoid hard objects.

When the brush cutter has no power to cut the grass, it is time to change the clutch.

         engine smoke

If the muffler of the brush cutter engine is smoking, it may be caused by the excessive mixing ratio of the intake air combustion. At this time, the air filter should be cleaned or replaced with a new one. If the fault still exists, it is necessary to clean and adjust the engine carburetor of the brush cutter. Generally, it is only necessary to drain the excess oil and run it for ten minutes. If the fault still exists at this time, you need to find a maintenance person to overhaul the engine.

Pull rope bounces when starting

When the brush cutter starts, the pull rope rebounds, which is mainly caused by the advance of the ignition time. In addition, it may also be caused by the blade hitting a hard object during the mowing process and cutting the flywheel key.

daily maintenance

At present, there are two methods of oil supply for brush cutters. One is that two-stroke brush cutters use mixed oil (95% gasoline plus 5% engine oil), and the other is that four-stroke brush cutters burn pure gasoline and four-stroke brush cutters use mixed oil. Always check whether the oil is reduced, and if it is missing, fill up the oil to protect the brush cutter.

In addition, everyone should pay attention to the brush cutter to rest for 10 minutes every two hours of work to prolong its life.

Finally, I remind you that if you want to reduce the occurrence of various failures and prolong the service life of the brush cutter, the most fundamental thing is to buy a high-quality brush cutter, and use and maintain the brush cutter reasonably according to the operating instructions.

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