Mechanical Fuel Shutoff on the Case 450 Dozer: Function, Failure, and Field Fixes
The Case 450 crawler dozer is a compact, mechanically driven machine that earned its reputation through decades of reliable service in grading, clearing, and utility work. Among its many straightforward systems, the mechanical fuel shutoff stands out as both a vital safety feature and a common source of confusion when problems arise. Unlike modern electronic solenoids or ignition-controlled fuel cutoffs, the Case 450 relies on a manual linkage to control fuel delivery to the injection pump. This article explores the design, troubleshooting, and real-world stories surrounding this essential but often overlooked component.