1. Do not add cold water after starting the engine. After starting the diesel engine, the engine temperature rises. Adding cold water at this time can easily damage parts such as the cylinder liners.
2. Do not wrap the diesel tank with plastic sheeting instead of the fuel tank cap. Wrapping the tractor's diesel tank tightly with plastic sheeting prevents air from circulating with the outside air, causing a drop in fuel pressure. This can lead to difficulty starting the engine, abnormal ignition, or automatic engine shutdown.
3. Do not use decompression shutdown. Decompression shutdown causes the valve top to hit the piston top and can also cause wear and tear on other related parts.
4. Do not use a partially engaged/disengaged clutch for deceleration. Using a partially engaged/disengaged clutch for deceleration will cause wear or damage to the clutch plates. Furthermore, this operation negatively impacts the driving safety of the mini four-wheeled tractor.
5. Do not apply sealant to both sides of the cylinder head gasket. Doing so will have the opposite effect, because the sealant will melt in high-temperature environments, damaging the seal between the cylinder block and cylinder head, leading to malfunctions such as air leakage and water leakage in the diesel engine.
6. Avoid using the auxiliary gear lever to change gears while driving. Many drivers are accustomed to starting in fourth gear and then using the auxiliary gear lever to shift to sixth gear while driving; they also habitually use the auxiliary gear lever to shift from sixth to fourth gear when encountering obstacles or slopes. This operation can easily deform or break the auxiliary gear shift fork. This is because the auxiliary gear shift fork is designed to be less strong than the main gear shift fork. Changing speed while driving with the auxiliary gear lever can easily cause the auxiliary gear shift fork to deform or break, resulting in malfunctions such as gear slippage. Therefore, changing gears with the auxiliary gear lever should generally be done when the engine is stopped (before starting), and it is not advisable to change gears while driving.
7. Avoid arbitrarily increasing the length of the intake and exhaust pipes or increasing the number of bends. 8. Increasing the length or number of bends in the intake and exhaust pipes directly affects the quality of intake and exhaust, leading to insufficient air intake and incomplete exhaust in the diesel engine. This results in difficulty starting the engine and a decrease in power.
9. Avoid adding engine oil to the cylinder liners to improve their sealing. This practice easily leads to carbon buildup in the cylinders, clogging the auxiliary fuel injection holes and causing difficulty starting the engine; it can also easily burn out piston rings, causing uneven wear of the cylinder liners and reducing engine power.
