The Suzuki DR350L, produced in 1990, is a versatile dual-purpose motorcycle celebrated for its robust engineering and reliability. As a popular option in the dual-sport segment, it offers a balanced blend of on-road usability and off-road capability. Its design is characterized by a dependable air-cooled, 348cc SOHC engine, capable suspension, and a straightforward, durable construction that has made it a favored choice for riders seeking a practical and accessible machine for varied terrain. This comprehensive Service Repair Manual provides detailed guidance for the maintenance, troubleshooting, and repair of the 1990 Suzuki DR350L. It covers all essential systems, including the engine, fuel system, transmission, drivetrain, brakes, suspension, and electrical components. The manual offers step-by-step procedures, diagnostic information, technical specifications, and rebuild instructions, empowering owners, mechanics, and technicians to effectively maintain and restore the vehicle's optimal performance and longevity. 🏷️ Basic Information Identification Make: Suzuki Model: DR350L Year: 1990 Codes Model Code: DR350L 👋 Introduction Market Position Segment: Dual-purpose (Dual Sport) motorcycle, popular for its versatility in on-road and off-road riding. Competitive Analysis Competitors: Competed against models like the Honda XR series, Kawasaki KLR series, and Yamaha XT series during its production run. Key Features Features: Known for its reliable air-cooled engine, capable suspension, and straightforward design, making it a practical and accessible dual-sport option. 📋 Manual Details Coverage Areas Primary Coverage: Comprehensive service and repair for Suzuki DR350L Secondary Coverage: Maintenance, troubleshooting, diagnostics, rebuilds Page Count Estimated Page Count: Approx. 300-400 pages (typical for this era/model) Manual Type Type: Service Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Detailed breakdown of the 348cc SOHC 4-stroke engine, including top-end (cylinder head, valves, camshaft), bottom-end (crankshaft, connecting rod, piston), lubrication system, cooling system (air-cooled), and exhaust system. Fuel System: Carburetor servicing (Mikuni BST33), fuel pump operation, fuel tank maintenance, fuel line inspection. Transmission: 5-speed gearbox, clutch operation and adjustment, transmission oil change procedures, internal gear inspection and repair. Drivetrain: Chain drive maintenance, sprocket inspection, rear swingarm and linkage lubrication and adjustment. Brakes: Front and rear disc brake systems, hydraulic component servicing (master cylinder, caliper), brake pad replacement, brake fluid flush and bleeding procedures. Suspension: Front telescopic forks (including oil changes, seal replacement, and damping adjustment), rear monoshock suspension, spring preload and damping adjustments. Electrical System: Ignition system (CDI, spark plug), lighting system (headlight, taillight, turn signals), battery maintenance and testing, charging system (stator, rectifier/regulator), starter motor operation, wiring diagrams. Chassis Frame: Frame inspection, steering head bearing service, wheel bearing replacement, spoke tension adjustment. Bodywork: Body panel removal and installation, seat servicing, fender maintenance. Procedures Included Maintenance: Scheduled maintenance (oil changes, filter replacements, chain adjustment), pre-ride inspections, brake system checks, suspension adjustments. Troubleshooting: Diagnostic procedures for common problems (engine won't start, poor performance, electrical issues), symptom-based troubleshooting guides. Repair: Step-by-step instructions for disassembly, reassembly, and repair of all major vehicle components. Diagnostics: Detailed electrical troubleshooting using wiring diagrams, component testing procedures, common fault codes. Rebuilds: Complete engine and transmission rebuild instructions, including torque specifications and critical measurements. Technical Depth Depth: Comprehensive, covering everything from basic adjustments to complete engine and transmission overhauls. Suitable for home mechanics and professional technicians. 📊 Manual Specifications File Format File Type: Portable Document Format (PDF) Searchability: Likely text-searchable, enabling quick location of specific information. Print Quality Quality: Digital PDF format allows for high-resolution viewing and printing. Binding Type Binding: N/A (Digital PDF) Paper Type Paper Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Type: 4-stroke, SOHC, 2-valve, Air-cooled Displacement: 348 cc Bore X Stroke: 74.0 mm x 80.0 mm Compression Ratio: 9.5:1 Performance Horsepower: Approx. 28-30 HP (est. at crank) Torque: Approx. 23-25 lb-ft (est. at crank) Fuel System Carburetor: Mikuni BST33, constant velocity Fuel Tank Capacity: 10.0 L (2.6 US gal) Ignition System: CDI (Capacitor Discharge Ignition) Lubrication System: Wet sump Oil Type: SAE 10W-40 Motorcycle Oil (API SG or higher) Oil Capacity: 1.8 L (1.9 US qt) with filter change 🔧 Transmission Standard Type: 5-speed constant mesh Clutch Type: Wet multi-plate Final Drive: O-ring sealed chain (520 pitch) Features Features: Smooth shifting operation, durable construction for dual-sport use. Transmission Oil Type: API GL-1 or GL-4 Gear Oil (SAE 80W-90) Capacity: 1.1 L (1.2 US qt) 📐 Dimensions Exterior Length: Approx. 2185 mm (86.0 in) Width: Approx. 835 mm (32.9 in) Height: Approx. 1240 mm (48.8 in) Wheelbase: Approx. 1420 mm (55.9 in) Ground Clearance: Approx. 285 mm (11.2 in) Weights Dry Weight: Approx. 120 kg (264.6 lbs) Wet Weight: Approx. 130 kg (286.6 lbs) (est.) 🛡️ Safety Features Ratings Safety Ratings: Motorcycle safety is primarily dependent on rider skill and proper maintenance. No formal crash test ratings like automobiles. Active Features Braking System: Hydraulic disc brakes front and rear provide strong stopping power. Suspension: Long-travel suspension absorbs bumps and maintains tire contact for stability. Passive Features Lighting: Standard headlight,...