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9. How to do the winter maintenance of lawn mowers and lawn vehicles?

When stored for more than 30 days:

First, drain the fuel in the fuel tank and start the gasoline engine until it stops due to exhaustion of fuel;

Secondly, just in the warm state of the engine just shut down, first drain the oil in the crankcase, and then add new oil to the appropriate scale according to the recommended level;

Third, remove the spark plug, drip 5-10 ml of oil into the cylinder, rotate the crankshaft several times, and install the spark plug;

Fourth, clean the dust and debris around the cutter head, machine body, cylinder block, cylinder head heat sink, air duct, net cover and muffler;

Fifth, save.

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

The above-mentioned failure is caused by the participation of organic oil in combustion. After discovering the fault, first check the oil dipstick to see if the oil is excessive. If it is too much, drain the excess oil and run it for another ten minutes. If the fault has not been eliminated, the engine needs to be overhauled.

11. Why is it difficult to start lawn mower heat engine?

The above failure is caused by stuffy oil in the combustion chamber. If you encounter this fault, you should unscrew the spark plug and wipe it dry (pay attention to prevent scalding), then pull the starting rope several times, and then install the spark plug back to start the engine.

12. What should I do if the lawn mower is weak in cutting grass?

Remove the air filter for cleaning, and replace it if it cannot be cleaned. Check whether the blade is sharp, if it is dull, it needs to be sharpened. In addition, whether the lawn has long and thick leaves, if so, increase the size of the cut grass to reduce the load on the engine.

13. Why can't the lawnmower be filled with too much oil during use?

The oil lubricates all parts of the machine in the cylinder. The oil splash wheel is used to continuously splash the oil to clean, lubricate and cool all parts of the machine. If too much oil is added, it will cause A large amount of emulsification and bubbles can not splash the oil, which can not play a role in lubrication and increase the temperature of the cylinder. Therefore, the lawnmower should not be overfilled with oil during use.

14. There are roughly several reasons why lawn mower engines are difficult to start, and what are the corresponding measures?

The difficulty of starting the engine is a more complicated problem, which should be considered from the three aspects of oil, gas, and electricity, because these conditions are all essential for engine operation.

First of all, the poor spark discharge effect of the spark plug is one reason. It is necessary to adjust the spark plug gap or replace with a new spark plug. Secondly, the sine gear and magneto cause the ignition sine to be inaccurate, which requires disassembly of the engine and readjustment; again, it is not used. If gasoline or gasoline that meets the specifications is deteriorated or impure, the gasoline must be replaced. Another possibility is that the air filter is clogged and the air intake is difficult, requiring timely cleaning and replacement of the air filter.