🏷️ Basic Information Identification Make: Isuzu Model: Pick-up Year: 1981 👋 Introduction Market Position Vehicle Segment: Compact/Mid-size pickup truck, known for ruggedness and reliability in its class. Competitive Analysis Key Competitors: Datsun/Nissan King Cab, Toyota Hilux, Mazda B-Series, Mitsubishi Mighty Max. Key Features Vehicle Strengths: Durable construction, fuel-efficient engines (for the era), capable off-road (especially 4x4 models). Manual Value Proposition Manual Benefit: Essential for owners and technicians to maintain, repair, and restore these classic pickups. 📋 Manual Details Coverage Areas Manual Type: Full Service Repair Manual Language: English Format: Likely Printed (common for this era), potential for PDF scans 📖 Manual Coverage Systems Covered Engine Service: Detailed disassembly, assembly, inspection, and repair procedures for engine components. Fuel System: Carburetor, fuel pump, fuel lines, fuel tank servicing and troubleshooting. Cooling System: Radiator, water pump, thermostat, fan, coolant specifications, and service. Ignition System: Distributor, spark plugs, ignition coils, timing adjustment procedures. Exhaust System: Muffler, catalytic converter (if applicable for the market), exhaust manifold, and pipe repair. Transmission Manual: Clutch, gearbox disassembly, assembly, fluid specifications, and adjustment. Transmission Automatic: Component inspection, fluid checks, and general service procedures (if automatic was an option). Driveline And Axles: Driveshaft, U-joints, rear axle servicing and repair. Suspension System: Front and rear suspension components, springs, shock absorbers, and alignment specifications. Steering System: Steering column, steering gear, power steering pump (if equipped), and linkages. Brake System: Front and rear brake inspection, pad/shoe replacement, caliper/wheel cylinder service, hydraulic system bleeding. Electrical System: Battery, charging system, starting system, lighting, fuses, relays, and basic wiring diagrams. Body And Chassis: Body panel repair, frame inspection, door mechanisms, interior trim removal/installation. Heating And Air Conditioning: HVAC system components, refrigerant handling (basic), blower motor, and controls. Procedures Included Routine Maintenance: Oil changes, filter replacements, fluid checks, lubrication, tune-up procedures. Troubleshooting: Diagnostic charts and symptom-based troubleshooting guides for common issues. Component Rebuilding: Detailed instructions for rebuilding carburetors, transmissions, and engine components. Disassembly And Assembly: Step-by-step guides for removing, installing, and reassembling major vehicle systems. Specifications And Tolerances: Torque values, clearances, and critical measurements for engine, transmission, and chassis components. Technical Depth Depth Of Coverage: Comprehensive: Covers everything from basic maintenance to in-depth engine and transmission rebuilds. Diagnostic Information: Includes diagnostic procedures and troubleshooting tips for common problems. Wiring Diagrams: Likely includes basic electrical system wiring diagrams for troubleshooting. 📊 Manual Specifications File Format Format Details: Physical print is expected for 1981 manuals. Digital PDF versions may exist as scans. Print Quality Paper Quality: Typically newsprint or semi-gloss paper for manuals of this era. Binding Type Binding Style: Likely saddle-stitched or perfect bound, designed for shop use. ⚙️ Engine Specifications Primary Engine Engine Code Common: G180SS (1.8L Inline-4, gasoline), C190 (1.9L Inline-4, diesel - less common in some markets) Displacement Gasoline: 1.8 Liters (1817 cc) Bore X Stroke Gasoline: Approximately 84.0 mm x 82.0 mm Compression Ratio Gasoline: Likely around 8.5:1 to 9.0:1 Horsepower Gasoline: Around 70-77 hp @ 4600-5000 RPM Torque Gasoline: Around 90-95 lb-ft @ 2600-3000 RPM Fuel System Fuel Delivery Gasoline: Single Barrel Carburetor (e.g., Hitachi or Rochester) Fuel Type: Unleaded gasoline Lubrication System Oil Type Recommendation: API SF or SG rated, SAE 10W-30 or 10W-40 depending on climate Oil Capacity With Filter: Approximately 4.5 US quarts (4.3 Liters) Cooling System Coolant Type: Ethylene glycol-based antifreeze (typically a 50/50 mix with distilled water) Coolant Capacity: Approximately 6.0 US quarts (5.7 Liters) Ignition System Spark Plug Gap: Typically 0.032 - 0.036 inches (0.8 - 0.9 mm) Ignition Timing Initial: Around 5-10 degrees BTDC (Before Top Dead Center), requires vacuum hose disconnected and plugged for base timing adjustment. 🔧 Transmission Standard Transmission Type Standard: 4-speed Manual Transmission Optional Transmission Type Optional: 3-speed Automatic Transmission (less common, availability may vary by market) Features Manual Transmission Fluid: API GL-4, SAE 75W-90 or 80W-90 Gear Oil Automatic Transmission Fluid: Dexron-II (or equivalent specification) Automatic Transmission Fluid Clutch Type: Dry, single-plate diaphragm spring clutch 📐 Dimensions Exterior Wheelbase Short Bed: Approximately 104.3 inches (2650 mm) Wheelbase Long Bed: Approximately 118.1 inches (3000 mm) Overall Length: Varies by bed length, approx. 174-190 inches (4420-4826 mm) Overall Width: Approximately 66.7 inches (1695 mm) Overall Height: Approximately 62.8 inches (1595 mm) for 2WD, higher for 4WD Cargo Bed Length Short: Approximately 72.6 inches (1845 mm) Bed Length Long: Approximately 87.4 inches (2220 mm) Weights Curb Weight: Approximately 2500-3000 lbs (1134-1361 kg), depending on configuration Payload Capacity: Typically around 1000-1500 lbs (454-680 kg) Towing Capacity: Generally rated for 2000-3500 lbs (907-1588 kg), depending on configuration and market. 🛡️ Safety Features Ratings Crash Test Data: Limited public crash test data available for this specific model year from official agencies. Vehicles of this era lacked many modern safety features. Active Features Braking System Type: Front Disc Brakes, Rear Drum Brakes Parking Brake: Mechanical, operates on rear wheels Passive Features Seat Belts: Standard lap belts or three-point...