Market Position:
The Suzuki KingQuad 750 has consistently been a benchmark in the utility ATV segment, known for its robust performance, advanced features, and reliable engineering. This service manual caters to owners and technicians seeking to maintain and repair these capable machines.
Competitive Landscape:
Competes with high-displacement utility ATVs from manufacturers like Yamaha (Grizzly 700), Polaris (Sportsman 850), and Can-Am (Outlander 850) during its production years. It was recognized for its powerful engine, sophisticated fuel injection, and comfortable rider ergonomics.
Key Features:
Liquid-cooled, fuel-injected 724cc DOHC single-cylinder engine, advanced electronic fuel injection (EFI) for improved throttle response and fuel efficiency, Suzuki's fuel-pump-in-tank system, 4WD with differential lock, independent front suspension, torque-sensing limited-slip front differential, multi-function digital instrumentation, and a robust chassis.
Engine Systems:
Engine overhaul, EFI system, fuel injection, ignition system, lubrication, cooling system, starting system, exhaust system, engine disassembly and reassembly, piston, connecting rod, crankshaft, cylinder head, valves, cams, cams, magneto, stator, ECU, wiring diagrams.
Drivetrain Systems:
Transmission, clutch (primary reduction gear, drive clutch, driven clutch), drive shafts, differentials (front and rear), axles, propeller shaft, gearshift linkage, gearbox overhaul.
Suspension And Steering:
Front and rear suspension, A-arms, shocks/struts, swingarm, linkage, steering system, steering column, tie rods, wheel bearings, ball joints.
Braking System:
Front and rear brakes, hydraulic system, brake calipers, brake pads, brake discs/rotors, master cylinders, brake lines, parking brake.
Chassis And Body:
Frame, body panels, fenders, plastic components, seat, handlebars, skid plates, rack systems.
Electrical Systems:
Battery, charging system (rectifier, regulator), starter motor, lighting (headlights, taillights, indicators), fuses, switches, wiring harnesses, EFI sensors, error codes.
Maintenance Procedures:
Scheduled maintenance, oil changes, filter replacements, spark plug replacement, valve clearance adjustment, coolant flush and replacement, brake fluid flush, lubrication points, tire pressure checks.
Repair Procedures:
Complete teardown and rebuild of all major components, engine assembly, transmission repair, suspension overhaul, brake caliper rebuild, electrical component replacement, carburetor adjustment (if applicable to specific sub-models or earlier versions not fully covered by EFI documentation).
Troubleshooting:
Diagnosis of common problems, error code interpretation (EFI related), no spark diagnosis, fuel system issues, electrical gremlins, mechanical component failures, performance issues.
Technical Specifications:
Torque specifications for all fasteners, fluid capacities, viscosity recommendations, engine specifications (bore, stroke, compression ratio), electrical specifications, general dimensions, weight specifications.
Depth Of Coverage:
Comprehensive coverage from basic maintenance to complete engine and transmission rebuilds, detailed diagnostic procedures, and component-level repair instructions.
Engine Type:
Single-cylinder, 4-stroke, SOHC, liquid-cooled
Displacement:
724 cc (44.2 cu. in.)
Bore X Stroke:
102.0 mm x 89.0 mm (4.02 in. x 3.50 in.)
Compression Ratio:
9.3 : 1
Estimated Horsepower:
Approximately 50-55 HP (varies by source and measurement)
Estimated Torque:
Approximately 45-50 lb-ft (varies by source and measurement)
Fuel System:
Electronic Fuel Injection (EFI) with twin injectors, fuel pump in tank.
Throttle Body Size:
46 mm
Oil Type Specification:
API SG+, SF or SE, SAE 10W-40 (check manual for specific viscosity based on temperature).
Coolant Type:
High-quality ethylene glycol-based antifreeze coolant (50/50 mixture with distilled water recommended).
Ignition Type:
Electronic ignition (transistorized magneto ignition)
Starting Method:
Electric Starter
Instrumentation:
Multi-function digital LCD meter with odometer, trip meter, clock, fuel gauge, engine hour meter, 4WD indicator, reverse indicator, neutral indicator, high-beam indicator, oil pressure indicator, and maintenance reminder.
Driver Assistance Features:
Electronic Fuel Injection (EFI) for consistent power delivery, engine braking provided by the CVT transmission.
Connectivity Features:
N/A (No electronic connectivity features typically found in ATVs of this era).
Initial Service:
First service typically around 1000 km or 6 months, including oil change and filter inspection.
Engine Oil Change Interval:
Every 1,000 km (600 miles) or 6 months.
Oil Filter Replacement:
Replace at every oil change (Genuine Suzuki Part Number: 16510-07H00-000).
Air Filter Cleaning Replacement:
Clean every 1,000 km (600 miles) or 6 months, replace as needed (Genuine Suzuki Part Number: 13780-08JC0-000).
Spark Plug Replacement:
Inspect every 2,000 km (1,200 miles) or 12 months, replace as needed. Recommended plug: NGK CR8E.
Valve Clearance Adjustment:
Inspect and adjust every 2,000 km (1,200 miles) or 12 months.
Coolant Replacement Interval:
Replace every 2 years regardless of mileage.
Engine Oil Capacity:
2.3 L (2.4 US qt.) with filter change, 2.1 L (2.2 US qt.) without filter change.
Final Drive Gear Oil Capacity:
Approximately 0.2 L (0.21 US qt.) for front and rear differentials.
Common Wear Items:
Brake pads, wheel bearings, CV boots, drive belts (CVT), suspension bushings due to off-road use and potential abuse.
Potential Efi Issues:
While generally reliable, potential issues can include sensor failures (TPS, MAP, IAT), fuel pump degradation, or clogged injectors. The manual provides diagnostic procedures for these.
