Segment:
Mid-weight Naked Sportbike / Streetfighter
Target Audience:
Enthusiasts seeking an affordable, capable, and stylish motorcycle for urban commuting and spirited riding.
Key Competitors:
KTM 390 Duke, Kawasaki Z400, Yamaha MT-03, Honda CB300R, Suzuki SV650 (though slightly higher displacement).
Value Proposition:
Offers a compelling blend of performance, modern styling, and accessible pricing, backed by a growing brand presence.
Design Philosophy:
Aggressive, sporty aesthetics combined with practical usability for everyday riding.
Primary Coverage:
Comprehensive Repair and Maintenance
Secondary Coverage:
Diagnostics, Troubleshooting, Electrical Systems, Engine Overhaul
Type:
Factory Service Manual / Workshop Manual
Powertrain:
Engine, Transmission, Clutch, Fuel System, Exhaust System
Chassis And Suspension:
Frame, Forks, Rear Shock Absorber, Swingarm, Wheels, Tires, Steering System
Brakes:
Front and Rear Brake Systems (Hydraulic), ABS (if equipped)
Electrical System:
Ignition System, Lighting, Battery, Charging System, ECUs, Wiring Harnesses, Sensors
Bodywork And Ergonomics:
Fairings, Seat, Handlebars, Footpegs, Body Panels
Routine Maintenance:
Oil Changes, Filter Replacements, Chain Adjustment, Spark Plug Service, Coolant Flush
Engine Overhaul:
Top-End Rebuild, Bottom-End Rebuild, Valve Adjustment, Piston/Cylinder Replacement
Transmission And Clutch:
Clutch Replacement, Gearbox Disassembly and Reassembly
Suspension And Steering:
Fork Seal Replacement, Shock Absorber Service, Steering Head Bearing Service
Brake System:
Brake Pad Replacement, Bleeding, Caliper Service
Electrical Diagnostics:
Wiring Diagram Interpretation, Fault Finding, Sensor Testing
Troubleshooting:
Diagnostic Charts, Symptom-Based Troubleshooting Guides
Depth:
Comprehensive: From basic maintenance to complete engine and component overhauls, including detailed diagnostic procedures and specifications.
Searchability:
Searchable Text Layers
Readability:
High-Resolution Scans, Clear Imagery
Illustrations:
Detailed Diagrams, Photographs, Schematics
Digital Format:
PDF (Portable Document Format)
Digital Quality:
Optimized for Screen Viewing and Printing
Configuration:
Parallel-Twin Cylinder, Liquid-Cooled, DOHC, 8-Valve
Displacement:
650 cc (approximately)
Bore X Stroke:
Specify bore and stroke from manual data (e.g., 83 mm x 60 mm)
Compression Ratio:
Specify compression ratio from manual data (e.g., 11.3:1)
Horsepower:
Approx. 71 HP (53 kW) @ 9000 RPM (Subject to variation by year/market)
Torque:
Approx. 62 Nm (46 lb-ft) @ 7000 RPM (Subject to variation by year/market)
Induction:
Electronic Fuel Injection (EFI) with Dual Throttle Bodies
Fuel Type:
Unleaded Gasoline (91 Octane or higher recommended)
Lubrication System:
Wet Sump
Cooling System:
Liquid Cooling with Electric Fan
Length:
Specify length from manual data (e.g., 2100 mm)
Width:
Specify width from manual data (e.g., 800 mm)
Height:
Specify height from manual data (e.g., 1100 mm)
Dry Weight:
Specify dry weight from manual data (e.g., 180 kg)
Curb Weight:
Specify curb weight from manual data (e.g., 193 kg)
Fuel Capacity:
Specify fuel tank capacity from manual data (e.g., 17 Liters)
Front Tire:
Specify front tire size from manual data (e.g., 120/70-17)
Rear Tire:
Specify rear tire size from manual data (e.g., 180/55-17)
Front Wheel:
Specify front wheel size and type (e.g., 17-inch Alloy)
Rear Wheel:
Specify rear wheel size and type (e.g., 17-inch Alloy)
Bolt Pattern:
Specify wheel bolt pattern if applicable (typically 4-bolt for motorcycles)
Crash Test Data:
Motorcycle-specific safety data is not typically rated by agencies like NHTSA or Euro NCAP. Focus is on component integrity and rider protection systems.
Braking System:
Hydraulic Disc Brakes (Front and Rear)
ABS:
Optional Anti-lock Braking System (ABS) available on certain models/trims.
Lighting:
LED Headlight, Taillight, and Turn Signals (if equipped)
Frame Construction:
Steel Trellis Frame (typically)
Instrument Cluster:
Digital LCD Display (Speedometer, Tachometer, Gear Position, Fuel Gauge, Odometer, Trip Meters, Clock).
Lighting Technology:
LED lighting is standard on newer models for improved visibility and power efficiency.
ABS:
Available ABS system enhances braking safety by preventing wheel lock-up.
Charging Port:
Some models may feature a USB charging port or 12V accessory socket.
Oil Change Interval:
Refer to manual for specific mileage/time (e.g., every 4,000 km or 6 months).
Chain Adjustment Interval:
Refer to manual for specific mileage/time (e.g., every 2,000 km).
Valve Clearance Check:
Refer to manual for specific mileage/time (e.g., every 10,000-12,000 km).
Air Filter Inspection:
Refer to manual for specific mileage/time (e.g., every 4,000 km).
Engine Oil Type:
Refer to manual for specific grade (e.g., SAE 10W-40) and API classification (e.g., API SG or higher).
Coolant Type:
Ethylene Glycol-based antifreeze coolant (50% mixture with distilled water).
Brake Fluid Type:
DOT 4 Hydraulic Brake Fluid.
Fork Oil Type:
Refer to manual for specific viscosity and type (e.g., Showa SS-01 or equivalent).
Engine Oil Capacity:
Specify capacity from manual data (e.g., approx. 2.4 Liters with filter change).
Coolant Capacity:
Specify capacity from manual data (e.g., approx. 1.8 Liters).
Common Complaints:
Occasional reports of minor electrical gremlins, suspension tuning preferences, and occasional clutch engagement feel.
Manual Assistance:
The manual provides diagnostic procedures to identify and rectify common issues, ensuring proper upkeep.
Manufacturer:
CFMOTO (Zhejiang CFMOTO Power Co., Ltd.) is a Chinese manufacturer known for a wide range of powersports vehicles including ATVs, UTVs, motorcycles, and outboards.
Introduction:
The 650NK, powered by a CFMOTO-designed 650cc parallel-twin engine, was introduced as part of CFMOTO's expanding motorcycle lineup aimed at global markets, representing a significant step up in engine capacity and performance for the brand.
Key Updates:
Subsequent model years often see updates to styling, suspension tuning, electronics, and emission compliance. ABS integration became a common feature.
Manufacturing Location:
China
Initial Production Years:
First generation models typically appeared around the early to mid-2010s.
