| 摘要 |
A device for timing the valves on an internal combustion engine wherein the camshaft operating the valves is driven by the crankshaft through a suitable power transmitting mechanism such as a gear train, a toothed belt or a chain belt. The crankshaft and the camshaft are brought into predetermined positions independent of each other and held against rotation by positioning parts. The power transmitting mechanism is tightly attached to the shaft journals and then the positioning parts are removed.
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