1968-1973 Ferrari 365 GT4 Factory Service Manual (OEM)

• Covers the 1968–1973 Ferrari 365 GT4 Berlinetta Boxer, including strictly the F102A engine and F102AB chassis configurations.
• Official 871-page factory publication provided in an English, Italian, and Spanish trilingual edition.
• Contains 47 exploded-view system diagrams, comprehensive fuse and relay layout charts, and detailed lubrication schedules.
• Serves as the primary reference for servicing the unique flat-12 engine and Dinoplex ignition system.

System Coverage Details

This documentation provides a structured breakdown of the vehicle's core systems. It starts with critical identification markers for chassis and engine serial numbers. From there, it transitions into driver operational guidance before diving deep into routine maintenance. Mechanics will find highly specific lubrication charts tailored directly to the F102A engine and transmission drivetrain, saving critical time on the shop floor when verifying vintage fluid specs.

Engine and Chassis Specifications

Engine maintenance sections outline exact data for the four-cam valve gear. Intake clearances are strictly specified at 0.008–0.010 inches. To manage the flat-12's thermals, the cooling system relies on a targeted radiator operating range of 185–203°F (85–95°C). The text explicitly documents all fluid capacities. Expect to see requirements like 12 liters of oil for the engine sump and 22 liters for the cooling system.

Fuel system tuning is covered extensively for the four Weber 40 IF carburetors. You get precise jet sizes and float levels to accurately dial in the air-fuel mixture. Hydraulic brake layouts show tandem circuits and vacuum-assisted operation, pinpointing free-pedal travel at 0.32–0.40 inches. Electrical reference values lay out the Marelli-sourced components, mapping the complex electronic Dinoplex unit. Working on vintage high-performance systems involves high voltages and pressurized fluids; always observe standard shop safety protocols and ensure proper ventilation before proceeding with these exact factory adjustments.