Being the amateur writers we are, we occasionally forget a word or muddy a phrase. Yes it would be great if everyone wrote like Charles Dickens. But since we don't, we need to try to understand the point being made. I took the sentence to mean that the throttle was to be left in the almost full 'out' position or in other words: just crack the throttle.
Brant Hollensbe DSM > All switches ON. Pump the throttle TWO times leaving it in almost full > throttle ...just a small crack .
