See post #15 in this link.

http://www.peachparts.com/shopforum/diesel-discussion/313733-74-240d-grey-smoke-questions.html

If you have this style of injection pump then shut-down is manual and not vacuum. Push the "gorilla knob" in to activate the shut-down.

__________________
“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.”
― Brian P. Cleary, You Oughta Know By Now