🏷️ Basic Information

Make:

Daihatsu

Model:

F300 Series

Year:

1990

Chassis Code:

F300

👋 Introduction

Market Position:

The Daihatsu F300 series, particularly the 1990 models, represented Daihatsu's entry into the compact SUV and utility vehicle segment. Often compared to vehicles like the Suzuki Samurai and early compact SUVs from Japanese manufacturers, it offered a blend of ruggedness and practicality for its era.

Competitive Analysis:

In 1990, the F300 competed against a growing market of compact, often body-on-frame SUVs. Its key competitors included the Suzuki Samurai, Isuzu Amigo/Rodeo, and potentially smaller Jeep models. Daihatsu typically positioned its vehicles as more affordable and fuel-efficient alternatives with a focus on functional utility.

Key Features:

Body-on-frame construction for durability, available 4-wheel drive systems, relatively simple and robust mechanicals, compact dimensions for maneuverability, and a focus on off-road capability or utility hauling.

📋 Manual Details

Systems Covered:

Engine, Fuel System, Cooling System, Lubrication System, Ignition System, Exhaust System, Clutch, Transmission (Manual & Automatic), Transfer Case, Driveshafts, Differentials, Suspension (Front & Rear), Steering, Brakes (Front & Rear), Electrical System, Lighting, Body Electrical, Body Panel Repair, Interior Trim, HVAC, Wiring Diagrams, Troubleshooting, Specifications

Page Count:

Approx. 800+

Manual Type:

Factory Service Manual / Repair Manual

Language:

English

Format:

Digital (PDF)

📖 Manual Coverage

Engine Mechanical:

Detailed overhaul procedures, component specifications, torque values, timing belt/chain replacement, piston and ring installation, valve seating and adjustment, cylinder head reconditioning, crankshaft and bearing clearance.

Fuel System:

Carburetor (if applicable) or Fuel Injection (EFI) system diagnosis and repair, fuel pump testing, injector servicing, fuel pressure specifications, evaporative emission control system.

Body And Chassis:

Body panel removal and installation, door mechanisms, window regulators, lock systems, exterior trim, bumper alignment, chassis lubrication points, frame inspection and repair.

HVAC System:

Heater core replacement, blower motor testing, air conditioning system servicing (if equipped), ducting inspection, refrigerant specifications (if applicable).

Cooling System:

Radiator inspection and repair, thermostat replacement, water pump servicing, coolant capacity and specifications, fan clutch operation, pressure testing.

Lubrication System:

Oil pump operation, oil filter replacement, oil capacity and viscosity recommendations, lubrication points, oil pressure testing.

Ignition System:

Spark plug specifications, ignition timing adjustment, distributor servicing, coil testing, ignition control module (ICM) diagnosis, resistance values.

Exhaust System:

Muffler and pipe replacement, catalytic converter information, exhaust manifold gaskets, mounting hardware.

Drivetrain:

Clutch adjustment and replacement, manual transmission overhaul, automatic transmission fluid type and capacity, transfer case operation and servicing, driveshaft U-joint inspection, CV joint maintenance, differential fluid specifications and change intervals.

Suspension Steering:

Front and rear suspension component identification, shock absorber and strut replacement, ball joint and tie rod end inspection, power steering system diagnosis, steering linkage adjustment, wheel alignment specifications.

Brakes:

Disc brake rotor and pad replacement, drum brake shoe and hardware servicing, brake fluid type and bleeding procedures, master cylinder and wheel cylinder replacement, parking brake adjustment, ABS system (if equipped) troubleshooting.

Electrical System:

Detailed wiring diagrams for all circuits, component locations, fuse and relay identification, battery testing and replacement, alternator output specifications, starter motor testing, lighting system troubleshooting, horn, wipers, and power window systems.

Maintenance Procedures:

Oil and filter changes, air filter replacement, spark plug replacement, fuel filter replacement, coolant flush and replacement, brake fluid flush, differential fluid changes, transmission fluid changes, battery maintenance, tire rotation and balancing.

Diagnostic Procedures:

Step-by-step troubleshooting guides for common drivability issues, electrical faults, cooling system problems, brake malfunctions, and starting/charging system issues. Use of diagnostic tools and techniques.

Repair Procedures:

Complete overhaul procedures for major components like engine, transmission, suspension, brakes, and steering. Replacement of specific parts with detailed instructions and torque specifications.

Electrical Troubleshooting:

Systematic approach to diagnosing electrical faults using multimeters, circuit testers, and wiring diagrams to pinpoint issues in lighting, ignition, charging, starting, and accessory circuits.

Technical Depth:

Comprehensive coverage from basic maintenance to complete engine and transmission rebuilds. Includes detailed specifications, torque values, diagnostic flowcharts, and wiring diagrams.

Component Specifications:

Precise measurements for critical engine components (pistons, rings, bearings, valves), bearing clearances, valve lift and duration, transmission gear ratios, final drive ratios, suspension geometry values.

Diagnostic Codes:

While OBD-I might have been present in some markets, the manual will focus on symptom-based diagnosis and component testing rather than specific fault codes commonly found in later OBD-II systems.

Wheels And Tires:

Recommended tire sizes, inflation pressures, wheel torque specifications, bolt pattern (likely 5x139.7mm), wheel bearing inspection and replacement.

📊 Manual Specifications

File Format:

High-resolution PDF, searchable text, bookmarked sections for easy navigation.

Print Quality:

High-quality digital reproduction of original factory documentation.

Binding Type:

N/A (Digital Format)

Paper Type:

N/A (Digital Format)

⚙️ Engine Specifications

Engine Code Displacement:

Likely models featured Daihatsu's HD-C series engines, such as the HD-C (1.6L SOHC) or potentially a 1.3L variant depending on specific market and trim. For example, the HD-C is a 1589cc (1.6 Liter) SOHC inline-4 cylinder engine.

Horsepower Hp:

Approximately 70-80 HP for the 1.6L engine, depending on market specifications and tuning.

Torque Ft Lbs:

Around 80-90 lb-ft for the 1.6L engine.

Fuel System Type:

Typically Fuel Injection (EFI) for 1990 models in most major markets, although some regions may have had carbureted variants.

Fuel Type:

Unleaded Gasoline

Cooling System Type:

Liquid-cooled, pressurized system with thermostat and fan.

Oil Type Viscosity:

API SG or SH, SAE 10W-30 or 10W-40 recommended. Consult manual for specific ambient temperature ranges.

🔧 Transmission

Transmission Type Standard:

5-speed Manual Transmission

Transmission Type Optional:

3-speed or 4-speed Automatic Transmission (availability varied by market and trim)

Transfer Case:

Typically featured a 2-speed transfer case with selectable 4WD (4H, 4L, 2H).

Manual Transmission Fluid:

API GL-4, SAE 75W-90 or 80W-90 gear oil. Capacity approx. 2.0-2.5 liters.

Automatic Transmission Fluid:

Dexron II or equivalent. Capacity approx. 4.5-5.5 liters.

📐 Dimensions

Length Mm:

Approx. 3700-3800 mm (depending on body style - soft top vs. hard top)

Width Mm:

Approx. 1600-1650 mm

Height Mm:

Approx. 1700-1750 mm (including roof rack if fitted)

Curb Weight Kg:

Approx. 1100-1250 kg

Gross Vehicle Weight Rating Kg:

Approx. 1600-1700 kg

Towing Capacity Kg:

Typically limited, around 500-750 kg unbraked.

🛡️ Safety Features

Crash Test Ratings:

NHTSA/IIHS ratings for this specific model year and region may be limited or unavailable. Generally, vehicles of this era and segment had fewer advanced safety features compared to modern vehicles.

Active Safety Features:

Basic braking system, potentially power-assisted brakes on higher trims. Limited active safety features by modern standards.

Passive Safety Features:

Seat belts (lap and shoulder), potentially padded dashboard and steering wheel, strong body-on-frame construction providing structural integrity.

Front Brake Type:

Ventilated Disc Brakes

Rear Brake Type:

Drum Brakes

💡 Technology Features

Infotainment System:

Basic AM/FM radio, potentially with cassette player. Speaker systems were typically modest.

Driver Assistance Features:

Minimal by modern standards. May have power steering on some trims. No electronic stability control, traction control, or advanced driver-assistance systems (ADAS).

Connectivity Options:

No Bluetooth or USB connectivity. Analog systems only.

Headlights:

Halogen sealed beam or composite headlights depending on regional specifications.

🔧 Maintenance

Oil And Filter Change:

Every 5,000-7,500 km (3,000-5,000 miles) or 6 months, whichever comes first.

Air Filter Replacement:

Every 15,000-20,000 km (9,000-12,000 miles) or annually.

Spark Plug Replacement:

Every 30,000-40,000 km (18,000-24,000 miles), depending on plug type.

Timing Belt Replacement:

Every 80,000-100,000 km (50,000-60,000 miles) or 5 years. Crucial due to potential for interference engine damage.

Brake Fluid Type:

DOT 3 or DOT 4.

Coolant Type:

Ethylene Glycol based coolant, typically a 50/50 mix with distilled water.

Common Issues:

Rust and corrosion (especially on body panels, frame, and exhaust system), clutch wear (due to utility use), potential for head gasket leaks on older engines, carburetor issues (if applicable), aging rubber hoses and bushings, transfer case and differential leaks. Electrical component reliability can also be a concern on older vehicles.

Suspension Wear:

Worn shock absorbers, ball joints, and bushings are common due to the vehicle's design and potential off-road use.

Engine Overheating:

Can occur due to clogged radiators, faulty thermostats, or water pump issues. Regular coolant flushes are important.

📚 Vehicle History

Brand Heritage:

Daihatsu, a subsidiary of Toyota, has a long history of producing small, efficient, and reliable vehicles. Their focus has often been on kei cars and compact utility vehicles, building a reputation for affordability and practicality.

Model Evolution:

The F300 series was part of Daihatsu's strategy to compete in the growing global market for compact SUVs and recreational vehicles. It evolved from Daihatsu's earlier utility vehicle designs, offering a more modern approach to the segment.

Production Years:

The F300 series was produced from the late 1980s through the 1990s. The 1990 model year falls within its initial production run.

🏆 Awards & Recognition

Recognitions:

While specific awards for the 1990 F300 are not widely documented, Daihatsu vehicles of this era were often recognized for their fuel efficiency, reliability in their class, and value for money.

Fuel Economy Rating Mpg:

Approximately 20-25 MPG combined, depending on engine, transmission, and 2WD/4WD configuration.