1. Low Engine Oil Level:
If your lawn mower engine's oil level is too low, it may cause your engine to sound like grinding when You turn it over. The oil in your lawn mower engine acts as a lubricant, reducing friction between moving parts and helping dissipate heat. When the oil level is too low, it cannot do its job effectively, causing the metal components in the engine to grind against each other and make a grinding noise.
*2. Worn-out Engine Bearings*:
The bearings in your lawn mower engine serve to reduce friction between the crankshaft and other moving parts. Over time, these bearings can wear out and become damaged, leading to a grinding noise. Worn-out engine bearings can also cause your engine to lose power and become difficult to start.
3. Damaged Piston Rings:
Piston rings help seal the combustion chamber and prevent compression loss in your lawn mower engine. If the piston rings are damaged or worn, it can cause the engine to make a grinding noise when You turn it over. Damaged piston rings can also lead to a loss of power and increased oil consumption.
*4. Foreign Object in the Engine*:
Sometimes, a foreign object, such as a small piece of metal or debris, can get into the engine and cause a grinding noise. This can happen if you accidentally drop something into the engine while working on it or if the engine air filter is dirty or damaged, allowing dirt and debris to enter the engine.
5. Starter Problems*:
In some cases, a grinding noise when You turn over your lawn mower engine may be caused by a problem with the starter. If the starter is not engaging properly with the flywheel, it can make a grinding noise. A faulty starter solenoid can also cause this problem.
If You have checked the oil level and verified that it is at the correct level, and You suspect that the grinding noise is due to worn-out bearings, damaged piston rings, a foreign object in the engine, or a starter problem, You will need to take Your lawn mower to a qualified repair technician for diagnosis and repair.
