This is a 12V stop solenoid valve that controls the fuel supply to the engine, essential for shutting down the Mitsubishi S4Q, S4S, S6S engines and compatible Volvo, Terex, Schaeff, and Sdmo generator units. It is built to withstand the demanding conditions of engine operation, offering reliable performance unlike a faulty solenoid that may stick or fail to actuate. Symptoms of a failing stop solenoid include the engine failing to start, inability to shut down the engine when the key is turned off, or intermittent stalling.
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Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.
Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.
The most common symptom is the engine's inability to be shut down by turning the ignition key. Alternatively, the engine may fail to start or may stall unexpectedly during operation. If the solenoid fails to actuate correctly, it can lead to intermittent running issues or a complete loss of power.
Ensure the electrical connector is clean and securely fastened to prevent intermittent operation; do not force the solenoid into its mounting position if resistance is met.
Test the engine's electrical system and battery voltage before replacing the stop solenoid to rule out other electrical issues.