Model:
SX Viper / S / ER / Venture 700
Model Codes Covered:
SX Viper, SX Viper S, SX Viper ER, Venture 700
Chassis Codes:
Specific chassis codes not detailed in product description, but manual covers all variants listed.
Market Position:
Yamaha's Viper series in 2004 represented a strong contender in the performance and trail riding segments of the snowmobile market, known for their reliable powerplants and agile handling.
Competitive Analysis:
Competed with similar offerings from Ski-Doo (e.g., MXZ series), Arctic Cat (e.g., Mountain Cat, ZRT), and Polaris (e.g., RMK, Edge).
Key Features:
Powerful 700cc twin-cylinder engine, advanced suspension systems (e.g., ProAction, Deltabox chassis), comfortable seating for trail riding, and performance-oriented variants for varied snow conditions.
Systems Covered:
Engine (disassembly, repair, assembly, inspection), Fuel System, Ignition System, Exhaust System, Cooling System, Drivetrain (clutch, track, suspension), Steering System, Braking System, Electrical System (wiring diagrams, components), Chassis, Bodywork, Lubrication System, Carburetion/Fuel Injection (specific to 700cc engine), Ski & Track Suspension, Handlebar & Controls, Seat & Storage.
Procedures Included:
Routine maintenance, scheduled service, component inspection, troubleshooting, diagnostic procedures, disassembly, repair, reassembly, overhaul, component replacement, adjustments, specifications, torque values, electrical troubleshooting, wiring diagrams, fluid capacities, maintenance schedules.
Technical Depth:
Comprehensive, detailed step-by-step procedures for mechanics and technicians, including exploded diagrams for disassembly and assembly, enabling complete overhaul and advanced repair. Suitable for both routine maintenance and in-depth engine rebuilds.
File Format:
PDF (Portable Document Format)
Print Quality:
High-resolution, suitable for clear printing of text and diagrams. Assumes original manual quality.
Binding Type:
N/A (Digital PDF download)
Paper Type:
N/A (Digital PDF download). Assumes original manual was printed on durable, high-quality paper suitable for workshop environments.
Engine Type:
2-Cylinder, 2-Stroke, Reed Valve, Liquid-Cooled
Engine Displacement:
698cc
Bore X Stroke:
73.0 mm x 80.0 mm
Horsepower Rating:
Approx. 120-130 HP (subject to specific model variant and tuning). Specific rating not provided in product description.
Torque Rating:
Not specified in product description, but indicative of strong mid-range power delivery.
Fuel Delivery:
Carbureted (typically dual Mikuni VM34 or similar, depending on exact variant) or EFI for certain performance models, though product description implies carbureted for base 700cc.
Recommended Fuel:
87 Octane Unleaded Gasoline (check specific manual for exact octane requirement)
Ignition Type:
CDI (Capacitor Discharge Ignition)
Oil Mixing:
Premix or Oil Injection (check specific model variant)
Cooling Type:
Liquid-Cooled
Starting System:
Recoil Starter and/or Electric Start (depending on model variant - ER likely includes electric start).
Transmission Type:
CVT (Continuously Variable Transmission) - Yamaha's Y.V.R. (Yamaha Variable Ratio) system.
Optional Transmissions:
N/A for this engine/model series.
Clutch System:
Primary and Secondary Clutches (e.g., Yamaha's GYTR high-performance clutches may be an aftermarket option, but stock units are covered).
Gear Ratios:
CVT ratio varies automatically based on engine RPM and load. Specific internal gear reduction ratios would be detailed in the manual.
Drive System:
Chain Drive (to track)
Overall Length:
Varies by model, typically around 115-120 inches (292-305 cm). Specific dimensions not provided in product description.
Overall Width:
Varies by model, typically around 46-48 inches (117-122 cm). Specific dimensions not provided in product description.
Track Width:
Not directly applicable as track is singular, but refers to track dimensions.
Cargo Capacity:
Typically includes under-seat storage and potentially a rear rack. Specific capacity not provided in product description.
Dry Weight:
Approximately 500-550 lbs (227-249 kg). Specific weights vary by model variant. Not provided in product description.
Safety Ratings:
N/A (Snowmobiles are not rated by agencies like NHTSA or IIHS in the same way as automobiles).
Active Safety Features:
Hydraulic Disc Brakes, Tethered Kill Switch, Wide Ski Stance for stability.
Passive Safety Features:
Durable chassis construction (e.g., Deltabox frame), padded handlebars and seat, headlights and taillights for visibility.
Infotainment System:
Basic instrumentation typical for the era: speedometer, tachometer, odometer, trip meter, and indicator lights (e.g., engine warning, oil level). No advanced infotainment systems.
Driver Assistance Features:
Limited to mechanical features like effective braking and stable chassis design. No electronic driver-assistance systems.
Connectivity Features:
N/A
Initial Service:
First service typically around 10-20 hours or 100-500 miles, focusing on track tension, clutch inspection, and lubrication.
Annual Maintenance:
Includes spark plug replacement, air filter cleaning/replacement, chaincase oil change, suspension lubrication, brake inspection, track inspection, clutch inspection, and coolant check/flush.
Engine Overhaul Interval:
Recommended overhaul intervals vary based on usage, but typically start around 3,000-5,000 miles for a performance engine. Manual provides detailed guidance.
Engine Oil Type:
Yamaha's own 2M-S certified oil or equivalent high-quality 2-stroke synthetic oil (if oil injected). Premix requires specific ratio. Consult manual for exact specifications.
Coolant Type:
Ethylene glycol-based antifreeze (typically 50/50 mix with distilled water). Consult manual for specific Yamaha coolant or equivalent.
Chaincase Oil Type:
Yamalube Gear Oil or equivalent SAE 80W-90 hypoid gear oil. Consult manual for capacity and specific part number.
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid. Consult manual for exact specification and capacity.
Common Issues:
As with many 2-stroke engines of this era, potential issues can include carburetor tuning, exhaust port blockages, drive clutch wear, and wear on suspension components. Regular maintenance as outlined in the manual is crucial to prevent these.
Typical Wear Items:
Drive belts, spark plugs, sliders (skis and track), carbides (skis), shock absorbers, and bushings.
Brand Heritage:
Yamaha has a long-standing history in motorsports, including snowmobiles, dating back to the 1960s. They are known for engineering excellence and reliable engines.
Model Evolution:
The Viper line, particularly the 700cc models, evolved from Yamaha's successful performance-oriented snowmobiles, focusing on power, handling, and rider comfort. The SX Viper was a popular trail performance model, with S, ER, and Venture variants offering specific feature sets or intended uses.
Production Years:
The 700cc Viper platform was produced for several years in the early to mid-2000s, with 2004 being a key model year.
Manufacturing Location:
Yamaha snowmobiles are typically manufactured in North America, primarily in North Carolina, USA.
Industry Recognitions:
Specific awards for the 2004 models are not readily available in general product descriptions, but the Viper line was generally well-regarded for its performance and handling in its class.
Customer Ratings:
Generally positive customer reviews for performance and reliability during its production run.
Certifications:
Manufactured to meet relevant safety and emissions standards of the time for snowmobiles.
