Common knowledge of garden machinery

1. Why do I need to use a large throttle when cutting grass?

The rotary lawn mower relies on the high-speed rotation of the blade to cut the grass when cutting. If the linear speed of the blade tip is not enough, the mowing effect is not good. Therefore, when you cut grass, you must use a large throttle to achieve high speed. In addition, the carburetor and automatic speed control device of the lawn mower reduce fuel consumption when the throttle is idling. Only when there is a load, the rotational speed of the lawn mower reaches 3800r.pm from no-load 3400r.pm. There is no need to use a small throttle to save fuel, and at the same time the mowing effect is not good.

2. Why should the oil be changed regularly?

The correct grade of mower oil on the machine is: lubrication, cooling, cleaning, and strengthening the piston seal. After the machine is used for a period of time, as dust in the air enters, the metal scraps worn by the machine enter the engine oil, and the engine oil is heated and moved, and its various properties will be reduced. If the oil is not changed in time, it will accelerate the wear of the machine and reduce the wear of the machine. The service life may even lead to accidents, such as ceramic tile fixing, cylinder pulling, and broken connecting rods. Therefore, the engine oil must be changed within the specified time to ensure the normal use of the machine.

3. Why should we clean regularly and replace the lawnmower air filter?

The air filter prevents dust from entering the cylinder block and prevents premature wear of machine parts due to dust entering the cylinder block. It should be cleaned and replaced regularly. The dust in the space-time pump will be deposited on the air filter element, which will reduce the air input and increase the combustion mixing ratio. This will result in incomplete combustion and reduce engine power. This will cause carbon deposits and increase the friction between the cylinder and piston. The carbon deposits in the cylinder will cause the cylinder to pull, resulting in a loss of machine power. The air filter should be cleaned and replaced in time to ensure the normal operation of the machine. At the same time, the outer wall of the machine cylinder should also be cleaned regularly to ensure its cooling effect. Otherwise it will increase the machine wear.

4. Why is organic oil found on the paper air filter after using the lawn mower?

Excessive addition of engine oil is the main cause of the above failure. When the machine runs out of the crankcase, excess oil will be discharged through the breathing valve and breathing tube, so spray the air filter. This will cause the air filter to be scrapped.

5. Why does the engine silencer emit black smoke?

The reason for the above failure is that the mixing ratio of intake air combustion is too deep. If this happens, try to clean or replace the air filter. If the fault is not eliminated, the engine carburetor must be adjusted or cleaned.

6. How to maintain lawn mower and lawn car in winter?

When stored for more than 30 days:

First, let go of the fuel in the fuel tank, and then start the engine until it stops because the fuel is exhausted.

Secondly, in the state of the hot engine that just stopped, let go of the oil in the crankcase, and then fill up with new oil in an appropriate proportion according to the recommended liquid level;

Third, remove the spark plug and inject 5-10 ml of oil into the cylinder. Rotate the crankshaft a few times, then install the spark plug.

Fourth, clean the dust and debris around the cutter head, cutter body, cylinder block, cylinder head radiator, air cover, grille and silencer;

Fifth, the store.

7. Why does the muffler emit blue smoke when the engine is running?

The above failure is caused by the organic oil participating in the combustion. After finding this fault, please first check the oil dipstick to see if there is excess oil. If excessive, let the excess oil run for 10 minutes after draining the excess oil. If the fault is not eliminated, the engine needs to be overhauled.

8. Why is it difficult to start the lawn mower?

The above failure is caused by combustion in the combustion chamber. If you encounter this fault, you should unscrew the spark plug and dry it (note that it is not hot), then pull up the starter rope several times, and then replace the spark plug to start the engine.

9. What to do when the lawn mower is powerless?

Remove the air filter, and if it cannot be cleaned, replace it. Check whether the blade is sharp, if it is blunt, it needs polishing. In addition, if the lawn is thick, the size of the lawn should be increased to reduce the load on the engine.

10. There are many reasons why the mower engine is difficult to start. What are the corresponding measures?

The difficulty of starting the engine is a more complicated problem. Factors in oil, gas and electricity must be considered because