Model:
        
        
            Quad Runner 250 / King Quad 280
        
     
    
        
            Model Variant:
        
        
            Quad Runner 250, King Quad 280
        
     
    
        
            Years Covered:
        
        
            1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998
        
     
    
        
            Platform:
        
        
            ATV (All-Terrain Vehicle)
        
     
 
    
    
    
        
            Target Audience:
        
        
            Owners seeking to perform maintenance and repairs, independent repair shops, aspiring ATV technicians.
        
     
    
        
            Value Proposition:
        
        
            Provides comprehensive, factory-level information to reduce repair costs and ensure proper vehicle operation.
        
     
    
    
        
            Manual Advantage:
        
        
            Offers more detailed and technical information than generic repair guides, covering factory specifications and procedures.
        
     
    
    
        
            Illustrations:
        
        
            Hundreds of detailed illustrations and diagrams.
        
     
    
        
            Step By Step Instructions:
        
        
            Clear, sequential instructions for all procedures.
        
     
    
        
            Completeness:
        
        
            100% complete and intact factory service information.
        
     
 
    
    
    
        
            Engine Mechanical:
        
        
            Engine overhaul, disassembly, assembly, cylinder head, piston, crankshaft, camshaft, valve train, lubrication system, cooling system.
        
     
    
        
            Fuel System:
        
        
            Carburetor (including adjustment and cleaning), fuel pump, fuel tank, fuel lines.
        
     
    
        
            Ignition System:
        
        
            Ignition timing, spark plugs, ignition coil, CDI unit, stator, troubleshooting.
        
     
    
        
            Transmission:
        
        
            Clutch operation, gear shifting mechanisms, transmission disassembly and assembly, lubrication.
        
     
    
        
            Drivetrain:
        
        
            Front and rear differential, drive shafts, CV joints, final drive.
        
     
    
        
            Suspension:
        
        
            Front and rear suspension components, shock absorbers, A-arms, bushings, adjustments.
        
     
    
        
            Brakes:
        
        
            Hydraulic brake system, brake calipers, master cylinder, brake pads, brake lines, bleeding procedures, drum brake adjustments (if applicable).
        
     
    
        
            Electrical System:
        
        
            Battery, charging system (alternator/stator), starter motor, lighting system, wiring diagrams, fuses, relays, switches.
        
     
    
        
            Steering:
        
        
            Steering column, tie rods, steering knuckles, adjustment and repair.
        
     
    
        
            Frame And Bodywork:
        
        
            Frame inspection, body panel removal and installation, fenders, racks, seat.
        
     
    
        
            Wheels And Tires:
        
        
            Tire pressure specifications, wheel bearing maintenance, rim specifications.
        
     
    
    
        
            Routine Maintenance:
        
        
            Oil changes, filter replacements, lubrication points, spark plug checks, air filter cleaning/replacement, valve adjustments.
        
     
    
        
            Troubleshooting:
        
        
            Diagnostic charts and procedures for common problems related to starting, running, and electrical systems.
        
     
    
        
            Component Repair:
        
        
            Detailed steps for disassembling, inspecting, repairing, and reassembling major and minor components.
        
     
    
        
            Rebuilds:
        
        
            Comprehensive instructions for complete engine and transmission rebuilds.
        
     
    
        
            Wiring Diagrams:
        
        
            Complete electrical system schematics for accurate diagnosis and repair.
        
     
    
    
        
            Diagnostic Capabilities:
        
        
            Advanced diagnostic procedures, fault code interpretation (if applicable), symptom-based troubleshooting.
        
     
    
        
            Reconstruction Level:
        
        
            Factory-level detail allowing for complete disassembly and reassembly of all major systems.
        
     
    
        
            Specifications Detail:
        
        
            Precise torque values, clearances, fluid capacities, and electrical resistance measurements.
        
     
 
    
    
    
        
            Engine Type:
        
        
            Four-stroke, single-cylinder
        
     
    
        
            Engine Displacement Qr250:
        
        
            246cc (for Quad Runner 250)
        
     
    
        
            Engine Displacement Kq280:
        
        
            280cc (for King Quad 280 - likely a bore/stroke change or slightly different naming convention)
        
     
    
        
            Cooling System:
        
        
            Air-cooled
        
     
    
        
            Bore X Stroke Qr250:
        
        
            Refer to manual for specific dimensions (e.g., typical for this era might be around 70-72mm bore).
        
     
    
        
            Compression Ratio:
        
        
            Refer to manual for specific ratio.
        
     
    
    
        
            Horsepower Qr250:
        
        
            Estimated 17-20 HP (typical for class and era).
        
     
    
        
            Torque Qr250:
        
        
            Estimated 15-17 lb-ft (typical for class and era).
        
     
    
    
        
            Fuel Delivery:
        
        
            Carburetor
        
     
    
        
            Carburetor Model:
        
        
            Mikuni (specific model number will be in the manual).
        
     
    
        
            Fuel Type:
        
        
            Unleaded Gasoline
        
     
    
        
            Fuel Tank Capacity:
        
        
            Refer to manual (typically 3-4 gallons).
        
     
 
    
    
    
        
            Engine Oil Change:
        
        
            Every 100 hours of operation or annually, whichever comes first. (Specific interval in manual).
        
     
    
        
            Air Filter Cleaning:
        
        
            As needed based on operating conditions (e.g., every 20 hours or monthly).
        
     
    
        
            Spark Plug Inspection:
        
        
            Every 100 hours or annually. (Gap specification in manual).
        
     
    
        
            Valve Adjustment:
        
        
            Refer to manual (typically every 500-1000 hours or as performance dictates).
        
     
    
    
        
            Engine Oil Type:
        
        
            Refer to manual; likely SAE 10W-40 or 20W-50 motorcycle-specific or ATV oil meeting API SF or SG classification.
        
     
    
        
            Engine Oil Capacity:
        
        
            Refer to manual (typically 1.5-2 liters).
        
     
    
        
            Gear Oil Type:
        
        
            Refer to manual; likely SAE 80W-90 gear oil for final drives/differentials.
        
     
    
        
            Brake Fluid Type:
        
        
            DOT 3 or DOT 4 hydraulic brake fluid.
        
     
    
    
        
            Common Wear Items:
        
        
            Carburetor jets clogging, drive clutch/belt wear (CVT), aging electrical components, suspension bushings wear, starter motor reliability.
        
     
    
        
            Cooling System Performance:
        
        
            Air-cooled engines can be susceptible to overheating under extreme load or in hot climates; proper airflow is critical.
        
     
 
    
    
    
        
            Manufacturer:
        
        
            Suzuki Motor Corporation, a Japanese multinational corporation known for its motorcycles, automobiles, and ATVs.
        
     
    
    
        
            Legacy:
        
        
            The Quad Runner and King Quad lines were instrumental in Suzuki's success in the burgeoning ATV market, known for their robust engineering and off-road capability.
        
     
    
    
        
            Production Period:
        
        
            1987-1998
        
     
    
        
            Key Updates During Period:
        
        
            Likely saw minor engine tuning updates, styling refinements, and potential introduction of 4WD systems on certain models or trim levels.