Complex sentence: During 1962, Kawasaki engineers were developing a four-stroke engine for small cars which ended in 1962 when some of the engineers transferred to the Meguro factory to work on the Meguro K1 and the SG, a single cylinder 250 cc OHV.
Split into simpler sentences: During 1962, Kawasaki engineers were developing a four-stroke engine for small cars. Then some of the engineers transferred to the Meguro factory to work on the Meguro K1 and the SG, a single cylinder 250 cc OHV.