Rotary walk-behind mower maker explains why engines struggle to start

Self-propelled Lawn Mowers Factory describes the cause of engine starting difficulties:
1. It is difficult to start the lawn mower engine. There may be several reasons:
a. No gasoline: The solution is to add gasoline.
b. The spark plug wire is broken: the solution is to connect the spark plug wire.
c. The throttle switch is not in the initial position: the solution is to adjust the throttle switch to the maximum.
d. Oil circuit blockage: The solution is to clean the oil circuit.
e. Ignition misalignment: The solution is to correct the ignition timing.
F. Spark plug damage: The solution is to replace a new spark plug.
g. Using low-quality or spoiled gasoline: The solution is to choose the correct grade of gasoline.
2. The clogging of the air filter is also likely to cause difficulty in air intake and affect the start of the lawn mower. Therefore, the lawn mower should be cleaned or replaced frequently, use qualified gasoline, and adjust the gap between the spark plug and the engine.
3. If the trimming is uneven and there is no smooth effect, it is generally caused by the passivation of the blade. Therefore, the blades of lawn mowers generally need to be sharpened once after ten days of use, while hob blades can extend the sharpening frequency to once every three months.
4. If the lawn mower shakes or vibrates violently during work, it may be that some hard objects were encountered during the mowing process, which caused the blade to curl and deform, which caused the lawn mower to vibrate. Also, grinding the blades into a top-heavy situation can also cause the mower to vibrate. Therefore, the lawn mower blade should be sharpened so that the left and right sides are level. Pay attention to the condition of the lawn during use and try to avoid hard objects.
5. When the brush cutter has no power to cut grass, the clutch needs to be replaced.
6. If the muffler of the lawn mower engine emits smoke, it may be caused by an excessive intake combustion mixture ratio. At this time, the air filter should be cleaned or replaced with a new one. If the fault persists, the mower engine carburetor needs to be cleaned and adjusted. Generally, it is only necessary to let off excess oil and run for ten minutes. If the fault still exists at this time, you need to find a maintenance personnel to overhaul the engine.
7. When the lawn mower is started, the pull rope rebounds, which is mainly caused by the advance ignition time. In addition, it may also be caused by the blade hitting a hard object during mowing and cutting off the flywheel key.
8. At present, there are two ways to supply oil to the lawn mower. One is a two-stroke lawn mower that uses mixed oil (95% gasoline plus 5% engine oil), and the other is a four-stroke lawn mower that burns pure gasoline. The lawn mower should always check whether the oil is reduced, and if it is less, fill up the oil to protect the lawn mower.
9. In addition, everyone should pay attention to the fact that China Lawn Mower must rest for 10 minutes every two hours of work to prolong its life. Finally, I would like to remind everyone that if you want to reduce the occurrence of various failures and prolong the service life of the lawn mower, the most fundamental thing is to buy a high-quality lawn mower, and use and maintain the lawn mower according to the operating instructions.