This service manual covers out-of-production Briggs & Stratton single-cylinder engines manufactured between 1919 and 1981. It is designed as a repairman's handbook for cast iron models As-ZZs, 5s-320000s, and aluminum models 6Bs, 8Bs, and 60000s-253400s. This comprehensive guide provides the necessary specifications, diagrams, and instructions to restore these antique engines to optimal working condition, empowering users to perform repairs themselves.

The scope of this manual encompasses detailed information for the maintenance and restoration of these vintage engines. It aims to assist owners and technicians in understanding and executing repairs effectively. By providing essential technical data and procedural guidance, this handbook facilitates the upkeep and longevity of your Briggs & Stratton engine.