Lawn Mower, also known as a weed cutter, lawn mower, or lawn trimmer, is a mechanical tool used for mowing lawns and vegetation. It primarily consists of a parallelogram lifting mechanism, a frame, left and right single-wing weeding mechanisms, a machine deviation adjustment mechanism, a comb rotating bevel gear speed-increasing transmission mechanism, and a comb profile depth adjustment mechanism. Its operating efficiency is 8-10 times higher than manual weeding. During daily use, a lawn mower might not start properly. What are the main reasons? Let's learn more with Shuoxin.
The fuel system is the power system of Lawn Mower. If the machine fails to start or ignite properly, the first thing to consider is whether there is a problem with the fuel system. Common causes include:
1. Fuel line obstruction, such as a displaced carburetor main needle, clogged fuel filter, or congestion in the fuel tank cap vent. Regular carburetor cleaning and filter replacement are essential.
2. Fuel deterioration. Gasoline stored for over 30 days is prone to oxidation and gelling. Check the fuel's color and odor. If it's noticeably deteriorated, empty the tank and clean it thoroughly.
3. Improper fuel mixture. Two-stroke engines require a strict 50:1 fuel mixture. Excessive oil can cause carbon deposits in the combustion chamber.
The spark plug is responsible for ignition within Lawn Mower engine and is essential for proper starting. When inspecting spark plugs, a key component in the ignition system, pay attention to the following points:
1. The electrode gap should be maintained at 0.6-0.7mm. Any gap abnormalities can be adjusted with a feeler gauge.
2. Check the ceramic insulator for damage or burns; replace immediately if any problems are found.
3. Self-tests can be performed by short-circuiting the cylinder block to test the ignition response or by measuring the ceramic core temperature to determine the operating status of each cylinder.
The air filter is the breathing system of Lawn Mower. When it becomes clogged due to foreign matter or improper cleaning, it can deprive the engine of sufficient air supply, hindering the mower's starting. When maintaining the air filter on a daily basis, pay attention to the following points:
1. Clean or replace the filter element if its light transmittance falls below 50%. Paper filters are recommended to be replaced every 25 hours.
2. Increase inspection frequency during rainy seasons or willow catkin seasons; daily inspections are recommended. Moisture and foreign matter in the air can adhere to the filter, obstructing air intake. The resistance can increase by 60% due to moisture absorption. Excessive clogs can directly affect machine operation. 3. Check the intake hose for cracks and loose clamps. Leakage can cause a 30% drop in power.
4. For high-altitude operation, adjust the carburetor orifice or replace the low-resistance filter.
The following table also lists some other reasons why the lawn mower may not start properly for your reference. Hebei Shuoxin Machinery Manufacturing Co., Ltd. offers a wide variety of Lawn Mowers. Welcome to visit us to purchase and learn more.
| Possible Causes | Solutions |
| Empty fuel tank | Refill with fresh gasoline |
| Stale or contaminated fuel | Drain old fuel refill with new gasoline |
| Clogged fuel line | Clean or replace fuel line |
| Dirty air filter | Clean or replace air filter |
| Fouled spark plug | Clean spark plug gap or replace spark plug |
| Disconnected spark plug wire | Securely reconnect wire to spark plug |
| Dead battery | Recharge or replace battery |
| Engaged safety features | Release blade control disengage parking brake |
| Blocked carburetor | Clean carburetor jets use carburetor cleaner |
| Flooded engine | Wait 10 minutes restart with throttle open |
| Debris around blade | Turn off mower remove obstructions |
| Faulty ignition coil | Test ignition coil replace if defective |
| Old engine oil | Change oil to recommended viscosity grade |
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