According to the illustration, initial timing of fuel injection into the cylinder is controlled with the component that is identified as the letter _________. Illustration MO-0097
Official USCG Answer & Rule Citation
Correct Answer: Option A — C
Component 'C' typically represents the injection timing shim or adjustable tappet screw assembly located between the cam follower and plunger, which physically alters the port-closing point to adjust the absolute timing of fuel delivery into the engine cylinder.
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