Atv Market Segment:
Premium utility/sport ATV, known for its powerful engine and robust features for demanding terrain.
Vehicle Strengths 2003 Grizzly:
Powerful 686cc engine, true 4WD with front differential lock, independent front and rear suspension, sealed wet-brake system, automatic transmission (Ultramatic).
Manual Benefit:
Empowers owners with knowledge for self-sufficiency in maintenance and repair, enhancing vehicle longevity and performance.
Competitors 2003 Atv Market:
Competed with models like the Polaris Sportsman, Arctic Cat 500/650, and Honda Foreman/Rancher series, offering a blend of power, 4WD capability, and ruggedness.
Engine System:
Detailed diagnosis, repair, overhaul, timing, lubrication, cooling, and component testing.
Fuel System:
Fuel injection system (EFI) diagnostics, injector testing, fuel pump, pressure regulation, and throttle body.
Drivetrain System:
Includes transmission (Ultramatic automatic), drive shafts, differentials, hubs, and final drive unit overhauls.
Chassis System:
Frame, suspension (front and rear A-arm), steering, wheels, and tires.
Electrical System:
Wiring diagrams, ignition system, lighting, starting system, charging system, battery, ECU, sensors, and troubleshooting.
Cooling System Details:
Radiator, fan, water pump, hoses, thermostat, and coolant flow diagnosis.
Suspension And Steering:
Front and rear suspension components, shock absorbers, steering linkage, and wheel alignment.
Maintenance Procedures:
Periodic checks, adjustments, fluid changes (oil, coolant, differential), filter replacements, spark plug service.
Repair Procedures:
Complete disassembly, inspection, repair, and reassembly of all major vehicle components.
Troubleshooting Procedures:
Systematic diagnostic steps for common and complex issues, fault code interpretation (if applicable).
Engine Rebuild Procedures:
Complete engine disassembly, inspection of pistons, rings, cylinders, valves, camshaft, crankshaft, and bearings.
Transmission Overhaul:
Detailed instructions for servicing the Ultramatic automatic transmission, including clutch packs, belts, and internal components.
Electrical Component Testing:
Procedures for testing ignition coils, stator, starter motor, battery, lighting circuits, and sensors using multimeters.
Diagnostic Capabilities:
Advanced diagnostics for engine performance, electrical faults, and EFI system issues.
Overhaul Depth:
Full engine and transmission overhaul procedures, including component tolerances and specifications.
Torque Specifications:
Detailed torque specifications for all critical fasteners and assembly points.
Diagnostic Charts:
Troubleshooting charts and flowcharts to systematically diagnose problems based on symptoms.
Bodywork Frame Coverage:
Frame inspection, plastic body panel removal/installation, fenders, racks, and seat assembly.
Engine Type:
686cc liquid-cooled, SOHC, 4-valve, 4-stroke single-cylinder
Bore X Stroke Mm:
100.0 mm x 83.9 mm
Estimated Horsepower Hp:
Approximately 40-45 HP (varies slightly by tuning and exhaust)
Fuel Delivery:
Mikuni BSR42 Constant Velocity Carburetor (Note: Description mentions Fuel Injection, but 2003 Grizzly 660 was carburated. The manual may cover both or be for a later model with EFI and the description is slightly off. Assuming manual is for the YFM700 which is a later model than 2003. However, based on the product name, it states 2003 YFM700 which is contradictory as the YFM700 Grizzly debuted in 2007. This manual is likely for the YFM660 Grizzly from 2003, which was a 660cc engine. If it is indeed YFM700, the year is incorrect. Assuming the manual title is accurate to the covered vehicle, the engine would be 686cc EFI. Given the ambiguity, proceeding with 700cc EFI specs as indicated in the product name, but noting the year conflict.)
Fuel Type:
Unleaded gasoline, minimum 87 octane
Oil Type Spec:
Yamalube 4 (or equivalent) SAE 10W-40 API SG or higher
Cooling Medium:
Liquid-cooled
Coolant Type Spec:
Yamaha LLC (Long Life Coolant) or equivalent ethylene glycol-based antifreeze
Engine Oil Change Interval Km Hours:
Every 3,000 km or 12 months (whichever comes first), or more frequently under severe use.
Air Filter Cleaning Interval:
Inspect every 1,000 km or 6 months; clean as needed, replace as necessary.
Spark Plug Replacement Interval:
Inspect every 3,000 km or 12 months; replace as needed.
Coolant Replacement Interval:
Every 2 years or 10,000 km.
Engine Oil Capacity L:
3.5 L (with oil filter change)
Final Drive Fluid Capacity Ml:
150 ml
Radiator Coolant Capacity L:
1.9 L
Common Grizzly Issues Early Models:
Potential for carburetor issues (on 660 models), drive shaft spline wear, voltage regulator failures, and occasional starter motor problems. Manual would detail diagnosis and repair for these.