🔍 Key Concepts

• Study Figure 3 closely: the relationship between the manual shutdown lever and the overspeed trip reset lever. • Trace what parts are actually moved when the manual shutdown is operated: does it act on the overspeed trip mechanism at the injectors, or on the governor fuel control linkage? • Look for any indication of a remote pull cable or rod attached to the manual shutdown lever in the illustration.

💭 Think About

• When you pull a manual shutdown from the wheelhouse, which component must it ultimately move to stop the engine: the fuel injectors via the overspeed trip shaft, or the governor fuel control arm? • Compare the levers in Figures 1 and 2 (overspeed trip) with the lever arrangement in Figure 3: is the manual shutdown lever part of the same mechanism that trips on overspeed, or is it a separate governor linkage? • Ask yourself: which answer choice best matches both the method of actuation (how you move the lever) and the mechanism used (what part of the fuel system is actually being shut off).

✅ Before You Answer

• Verify in Figure 3 whether the manual shutdown lever shares the same shaft/linkage as the overspeed trip mechanism shown in Figures 1 and 2. • Confirm from the drawing whether a remote pull cable/rod is connected to the manual shutdown lever (look at the bottom-right of Figure 3). • Eliminate any choice that mixes up the overspeed trip reset lever with the manual shutdown lever; they are shown as two distinct levers with different functions.