Sanyang Motor was founded in Taipei in 1954 and began assembling Honda motorcycles under a technical cooperation agreement in 1961, an arrangement that shaped its engineering standards for decades. The cooperation gave the young company early access to modern production methods and quality control. Large-scale production at its plant in Hsinchu County made SYM one of Taiwan's principal two-wheeler manufacturers, with vehicles exported around the world.

The brand is known for dependable scooters sold in large numbers, including the Jet and Symphony lines, motorcycles such as the Wolf, and larger commuters like the Citycom. SYM machines are valued by delivery riders and commuters alike for durability, simple maintenance and low running costs, and the company also produces ATVs and light utility vehicles.

An SYM workshop manual provides dealer-level information for each model. Coverage includes four-stroke engine service from valve clearance checks to complete rebuilds, CVT transmission maintenance, fuel-injection diagnosis, brake and suspension work, and complete electrical wiring diagrams, supported by torque specifications, fluid capacities and the factory maintenance schedule. Bodywork and panel removal is explained so access jobs are done without damage.

Professional workshops, fleet operators and hands-on owners all gain from accurate model-specific data. Because so many SYM machines work hard in daily service, following the correct procedures pays off directly in reliability, and careful records protect resale value.