For Mitsubishi S4S engines that have logged countless hours of operation, overhaul parts are the key to reversing wear and tear. These parts work together to address the natural degradation that occurs in engines—from worn seals and gaskets that cause leaks, to aging pistons and rings that reduce combustion efficiency. By replacing these critical components, the engine regains its ability to generate power efficiently, operate smoothly, and withstand heavy workloads.
Over time, even well-maintained S4S engines face declining performance: increased fuel consumption, reduced power output, and more frequent breakdowns. These issues stem from worn parts that can no longer function as intended. Overhaul parts target these problems directly, ensuring that every system—from the cylinder head to the oiling system—works in harmony as it did when the engine was new. This comprehensive approach avoids the need for piecemeal repairs, which often fail to address underlying issues.
Ningbo Qiuning Trading Co., Ltd. offers both genuine and aftermarket Mitsubishi S4S overhaul parts. Genuine parts are manufactured to Mitsubishi’s original standards, ensuring perfect compatibility and long-term reliability—ideal for those seeking to maintain the engine’s original performance. Aftermarket parts are designed to meet basic operational requirements at a more accessible price, suitable for users prioritizing practicality and cost-effectiveness.
Whether your goal is to restore a workhorse engine or prevent costly downtime, our team can assist with choosing the right overhaul parts. For more information or to discuss your needs, contact us via WeChat/WhatsApp: +8615888032469 or E-mail: allen@perkins-rx.com.
Daily maintenance
Check whether the connecting bolts of each rotating part are loose and tighten them in time.
2. Check the oil level in the oil pan. If it is insufficient, add engine oil.
3. Check the fuel level in the fuel tank;
4. Check the water level of the water tank;
5. Check the joints of oil and water pipelines;
6. Check the sealing between the intake and exhaust pipes and the cylinder gaskets.
7. Remove surface oil stains and dust to keep the computer room clean and tidy.
Maintenance plans for backup generator sets: (Such as in residential communities, buildings, hospitals, government agencies, scenic spots, factories and other places where power outages are rare, and backup generator sets are only used for fire protection, power outage maintenance and other occasions)
Regular maintenance: On the basis of daily maintenance, it is sufficient to carry out maintenance every six months or once a year
Conduct a comprehensive inspection of the water, electricity, oil, gas and other components of the generator set to confirm whether the unit is functioning properly.
2. Conduct a no-load test run for 5 to 10 minutes to ensure the unit is fully lubricated. Judge the operating condition of the unit through methods such as listening, observing and smelling.
3. Replace consumables such as air filters, diesel filters, engine oil, oil filters, water filters, and oil-water separator filter elements;
4. Replace the coolant in the radiator and the radiator protector.
5. Add battery fluid or distilled water to the battery;
After the maintenance is completed, conduct another inspection of the unit and carry out cleaning and sweeping.
7. Conduct a no-load test run for 5 to 10 minutes, record all performance parameters of the unit, put forward reasonable suggestions, and have the customer accept it.
