Why might a manufacturer leave disassembly instructions out of their service manual?

The reasoning behind the omission of disassembly instructions in a service manual often involves concerns related to warranty compliance. When a manufacturer provides a warranty for their products, they typically require that only authorized personnel perform certain repairs or service tasks. If someone who is not authorized attempts to disassemble the product, it could lead to unintended damage, safety hazards, or improper repairs, which might void the warranty agreement. By leaving out these instructions, the manufacturer protects themselves legally and ensures that repairs are conducted in accordance with their standards, thereby maintaining warranty validity and product integrity.