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.
