Sentence 1: The two-stroke engine of the Maicoletta used an unusual starter that rocked the crankshaft back and forth before rotating instead of firing it .
Sentence 2: The Maicoletta two-stroke engine used an unusual starter that swung back and forth before firing the crankshaft instead of rotating it .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?