This manual covers the Datsun 810, a mid-size sedan, wagon, and coupe produced by Nissan Motor Corporation from 1977 to 1981. Known for its robust engineering and durability, the 1979 Datsun 810 offered a balance of features and value, competing with models like the Toyota Corona. It was powered by either the L20B inline-6 or the Z22 inline-4 engine and featured a rear-wheel-drive drivetrain. The vehicle was an early adopter of emissions control technology with its NAPS-Z system.

This factory service manual provides comprehensive information for the maintenance, repair, and troubleshooting of the 1979 Datsun 810 (chassis code A810). It details procedures for engine systems, including the L20B and Z22 engines, fuel, ignition, cooling, lubrication, and emissions controls. Coverage extends to the manual and automatic transmissions, drivetrain, suspension, steering, brakes, electrical systems, body, and interior. The manual includes detailed specifications, diagnostic guidance, and step-by-step instructions for disassembly and assembly, making it an essential resource for owners and technicians.