🏷️ Basic Information Identification Make: Cessna Model: 172 Skyhawk Covered Years: 1969-1976 Generation: Pre-M (1969-1972) & M (1973-1976) 📋 Manual Details Documentation Manual Type: Service & Repair Manual Language: English Page Count: 415 Format: PDF Availability: Instant Download Printable: True Features Illustrations: Detailed Photos and Illustrations Diagrams: Exploded Diagrams and Drawings Navigation: Easy Identification of Procedures ⚙️ Engine Specifications Powerplant 1969-1970 Engine Type: Continental O-300 Displacement: 300 cu in (4.9 L) Power: 145 hp (108 kW) Powerplant 1968-1968 K Engine Type: Lycoming O-320-E2D Power: 150 hp (112 kW) Powerplant 1971-1972 L Engine Type: Lycoming O-320 Power: 150 hp (112 kW) Powerplant 1973-1976 M Engine Type: Lycoming O-320 Power: 150 hp (112 kW) 🔧 Transmission Propulsion Type: Fixed Pitch Propeller Gears: Direct Drive (Engine to Propeller) 📐 Dimensions Airframe Weights 1969-1971 Max Gross Weight: 2,300 lb (1,043 kg) Airframe Weights 1973-1976 Max Gross Weight: 2,400 lb (1,089 kg) 🔧 Maintenance General Focus: Servicing, Repair, Preventative Maintenance Objective: Lower Repair and Maintenance Costs 📄 Model Specifics 172 Intro Year: 1955 Initial Engine: Continental O-300 Initial Power: 145 hp (108 kW) Initial Gross Weight: 2,200 lb (998 kg) 172B Skylane Option: Deluxe optional package for premium features Gross Weight Increase: 2,250 lb (1,021 kg) 172D Design Change: Omni-Vision rear window, one-piece windshield 172E Design Change: Circuit breakers replaced fuses, redesigned instrument panel Gross Weight: 2,300 lb (1,043 kg) 172F Design Change: Electrically-operated flaps Production Note: Basis for USAF T-41A Mescalero trainer 172I Engine Upgrade: Lycoming O-320-E2D (150 hp) Instrument Panel: Standard 'T' instrument arrangement 172L Landing Gear Change: Tapered, tubular steel gear legs replace flat spring steel Design Change: Plastic fairing between dorsal and vertical fin 172M Wing Feature: Drooped wing leading edge ('camber-lift' wing) Optional Package: 'II' package with enhanced avionics Designation Change: Exclusively marketed as 'Skyhawk' from 1976