Bobcat Fuel Shut Off Solenoid
Updated June 10, 2026
This fuel shut-off solenoid is an electric valve used on Bobcat diesel engines to cut fuel flow when the ignition is turned off, ensuring the engine stops cleanly. It is a critical component in the fuel delivery system of many Bobcat skid steers and excavators.
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How It Works
When the ignition key is turned off, the solenoid receives a signal to retract or extend a plunger, which mechanically closes the fuel supply valve inside the injection pump or fuel line. This stops fuel from reaching the cylinders, shutting down the engine. Some solenoids are designed to hold the valve open while the engine is running and close it when power is removed.
Common Failure Symptoms
A failing fuel shut-off solenoid may cause the engine to not start, run rough, or fail to shut off when the key is turned off. Intermittent stalling, especially when the machine is hot, can also indicate solenoid trouble. Electrical issues such as a broken wire or corroded connector are common causes of failure.
Installation Notes
Installation is typically a direct replacement. The solenoid bolts onto the fuel injection pump or fuel filter housing. Ensure the ignition is off and battery disconnected before swapping. Check that the plunger moves freely and matches the stroke of the original. Refer to the machine’s service manual for specific mounting torque and electrical testing procedures.
