This manual covers the Chetak and Legend models from 2003, powered by a 2-stroke scooter engine. Known for its robust build and iconic design, the Chetak is a legendary scooter that played a significant role in Indian personal transportation. These models, representing a practical and reliable mode of transport from their era, are characterized by their single-cylinder, air-cooled engines and automatic CVT transmissions. The primary focus of this technical note is the critical procedure of aligning camshaft timing marks with crankshaft marks, essential for maintaining optimal engine health and performance.

This English-language technical service bulletin provides specific instructions for camshaft timing synchronization and alignment, addressing potential issues such as power loss and rough idling that can arise from incorrect timing. It details step-by-step procedures, verification methods, and technical insights into engine mechanics, valve train operation, and ignition timing prerequisites. The manual is intended to assist owners, mechanics, and technicians in accurately performing this crucial maintenance task, ensuring the continued reliable operation of the Chetak and Legend scooters.