Model Code:
YFM660RN (2001-2004), YFM660RNC (2005)
Vehicle Type:
All-Terrain Vehicle (ATV)
Generation Code:
1st Generation (2001-2005)
Generation Description:
The initial and sole generation of the Raptor 660, establishing a benchmark for high-performance sport ATVs.
Category:
High-performance sport ATV
Target Audience:
Enthusiasts and professionals seeking to maintain, repair, or optimize their Yamaha Raptor 660.
Key Competitors Era:
Honda TRX450R, Polaris Predator 500, Suzuki LT-Z400.
Competitive Advantage:
The Raptor 660 was renowned for its powerful engine and aggressive styling, setting a new standard for the sport ATV segment.
Manual Benefit 1:
Cost savings through DIY repairs and maintenance.
Manual Benefit 2:
Restoration and preservation of vehicle performance and longevity.
Manual Benefit 3:
Empowerment through in-depth knowledge of the vehicle's systems.
Engine:
Rocker arms, camshaft, cylinder head, valves, valve springs, cylinder, piston, AC magneto, clutch, oil pump, shift shaft, crankcase, crankshaft, balancer, transmission
Cooling System:
Radiator, thermostat, water pump
Fuel System:
Carburetor (disassembly, inspection, reassembly)
Electrical System:
Switches, ignition system, electric starting system, starter motor, charging system, lighting system, signal system
Chassis And Suspension:
Likely covers suspension components, steering, and frame due to troubleshooting section mentioning shock absorbers and handling issues.
Brakes:
Brake system (mentioned in troubleshooting)
Maintenance:
Routine maintenance, fluid changes, lubrication, filter replacement.
Repair:
Engine rebuilds, transmission repairs, carburetor overhaul, electrical component replacement.
Troubleshooting:
Starting problems, idle speed issues, gear shifting problems, clutch problems, overheating, brake problems, shock absorber malfunctions, handling issues, lighting system problems.
Disassembly And Assembly:
Detailed procedures for component removal, overhaul, and reinstallation.
Specifications And Data:
Torque values, clearances, fluid capacities, electrical specifications.
Depth:
Comprehensive, covering detailed diagnostics, rebuild procedures, and technical specifications for professional mechanics and advanced DIY enthusiasts.
Compatibility:
PC & MAC compatible (Windows 97-10, macOS)
Printability:
Printable without restrictions
Searchability:
Likely searchable text within the PDF
Quality Description:
High-resolution digital reproduction with clear illustrations and diagrams.
Binding:
N/A (Digital Download)
Paper Type:
N/A (Digital Download)
Engine Type:
Liquid-cooled, four-stroke, SOHC, 4-valve, single cylinder
Bore X Stroke:
100.0 mm x 83.9 mm
Horsepower Estimated:
Approximately 50 HP (at crankshaft, varies slightly by year/tune)
Torque Estimated:
Approximately 45 lb-ft (at crankshaft, varies slightly by year/tune)
Fuel Type:
Unleaded gasoline
Cooling Method:
Liquid-cooled
Oil Type Recommendation:
Yamalube 4 (or equivalent SAE 10W-30, 20W-40, or 20W-50 4-stroke motorcycle oil depending on temperature)
Oil Capacity With Filter Change:
Approximately 2.3 L (2.4 US qt)
Overall Length:
Approx. 1,830 mm (72.0 in)
Overall Width:
Approx. 1,160 mm (45.7 in)
Overall Height:
Approx. 1,100 mm (43.3 in)
Dry Weight:
Approx. 210 kg (463 lbs)
Curb Weight:
Approx. 219 kg (483 lbs) (with all standard equipment and full fluids)
Front Suspension:
Independent double wishbone with adjustable spring preload, 9.1 inches travel
Rear Suspension:
Swingarm with adjustable spring preload, 8.1 inches travel
Front Brakes:
Dual hydraulic disc
Rear Brakes:
Dual hydraulic disc
Atv Safety Considerations:
As a high-performance sport ATV, operator skill and protective gear are paramount. Not designed for novice riders.
Throttle Limiter:
While not a standard feature on this model in terms of electronic limiting, proper throttle control is essential.
Anti Kickback Steering:
Yamaha's steering design aims to mitigate kickback, though terrain can influence this.
Engine Oil Change:
Every 1,000 km (600 miles) or 6 months, whichever comes first. Also recommended after intensive use.
Air Filter Cleaning:
Every 500 km (300 miles) or 3 months, or more frequently in dusty conditions.
Spark Plug Inspection:
Every 2,000 km (1,200 miles) or 12 months.
Coolant Type:
High-quality ethylene glycol-based coolant (50% solution with distilled water)
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid
Common Wear Item 1:
Cam chain tensioner (can become noisy or fail, leading to potential engine damage).
Common Wear Item 2:
Carburetor pilot jet clogging (leading to starting issues or poor idling).
Common Wear Item 3:
Clutch wear (dependent on riding style).
Common Wear Item 4:
Starter motor solenoid issues (can cause starting problems).
Yamaha Atv Legacy:
Yamaha has a long history in ATV manufacturing, with the 'Warrior' and 'Banshee' models preceding the Raptor, establishing a strong performance heritage.
Raptor 660 Introduction:
Introduced in 2001, the Raptor 660 revolutionized the sport ATV market with its powerful liquid-cooled engine and advanced suspension.
2001 Model Year Significance:
The inaugural model year, defining the Raptor's identity as a top-tier performance machine.
Subsequent Year Changes:
Minor updates and color changes typically occurred between 2002-2005, with the core engineering remaining consistent.
Production Period:
2001-2005
Successor Model:
Yamaha Raptor 700R (introduced in 2006)
