Positioning:
High-performance, trail-oriented snowmobile from Yamaha's renowned Viper series.
Competitors:
Competed with other high-performance twin-cylinder 2-stroke snowmobiles of its era, such as certain Polaris and Ski-Doo models.
Engine Type:
Powerful 700cc liquid-cooled 2-stroke triple-cylinder engine.
Suspension:
Advanced front and rear suspension systems for comfortable and capable riding.
Design:
Sporty and aerodynamic design contributing to its performance image.
Manual Value:
Provides dealer-level access to information, empowering owners and independent shops.
Primary Coverage:
Complete service and repair for all specified Yamaha SX Viper 700 models and years.
Secondary Coverage:
Diagnostic procedures, troubleshooting, maintenance schedules, parts replacement.
Estimated Pages:
Likely 500+ pages (typical for a comprehensive service manual, though not explicitly stated).
Type:
Factory Service Manual / Repair Manual
Engine System:
Engine overhaul, rebuilding, troubleshooting, component diagnostics, tuning, lubrication.
Fuel System:
Carburetor adjustment and cleaning, fuel pump, fuel lines, fuel tank.
Ignition System:
CDI unit, ignition coil, spark plugs, timing.
Cooling System:
Radiator, water pump, hoses, thermostat, coolant specifications.
Exhaust System:
Exhaust manifold, silencer, pipe inspection and repair.
Drive System:
Clutch (primary and secondary), drive belt inspection and replacement, chain case, track system.
Suspension System:
Front and rear suspension geometry, shock absorber service, spring replacement, linkage adjustments.
Braking System:
Brake caliper service, master cylinder, brake fluid specifications and bleeding, rotor inspection.
Electrical System:
Wiring diagrams, battery, stator, lighting, switches, diagnostic connectors.
Bodywork And Chassis:
Panel removal and installation, seat, handlebars, controls, chassis inspection.
Maintenance Procedures:
Regular scheduled maintenance, lubrication points, track tension adjustment, clutch alignment.
Troubleshooting Guides:
Step-by-step diagnostic flowcharts for common and uncommon issues.
Engine Rebuilding:
Complete engine disassembly, inspection of internal components, piston/ring replacement, cylinder boring, crankshaft service.
Clutch Service:
Primary and secondary clutch disassembly, cleaning, inspection of rollers and springs, clutch weight adjustments.
Suspension Tuning:
Adjustments for different riding conditions, spring preload settings, damping adjustments.
Electrical Diagnostics:
Testing of ignition system components, stator output, sensor checks.
Carburetor Tuning:
Jetting specifications, needle adjustments, idle speed settings for various altitudes and conditions.
Depth:
Comprehensive, covering everything from basic maintenance to full engine rebuilds and complex electrical diagnostics.
Detail Level:
Includes detailed torque specifications, clearances, and assembly instructions.
Visual Aid Quality:
Features numerous illustrations, diagrams, and photographs for clarity.
Engine Type:
Liquid-cooled, 2-stroke, reed valve, 3-cylinder
Bore X Stroke:
73.0 mm x 55.3 mm (Typical for this engine family)
Compression Ratio:
7.4:1 (Typical)
Horsepower:
Approximately 120-130 HP (varies slightly by year and tuning).
Torque:
Estimated 80-85 lb-ft (at peak RPM).
Carburetor Type:
Triple Mikuni VM34 carburetors (typical for this model).
Fuel Requirement:
87 Octane Unleaded Gasoline (Recommended).
Oil Injection:
Yamaha Active Lubrication (YAL) system.
Initial Break In:
Specific break-in procedures for new or rebuilt engines are detailed in the manual (typically involves varied RPMs and careful operation).
Oil Change:
2-stroke engine; oil is mixed via injection system, not traditional oil changes. Regular checks of oil reservoir level.
Clutch Inspection:
Recommended every 1,000-2,000 miles or annually; check belt condition, sheave surfaces, and roller wear.
Spark Plug Replacement:
Typically every 1,000-2,000 miles or as needed based on condition.
Track Tension:
Check and adjust every 500 miles or as needed to prevent excessive wear or slippage.
Coolant Type:
Ethylene Glycol based antifreeze, typically a 50/50 mix with distilled water. Specific Yamaha P/N may be required.
Brake Fluid:
DOT 3 or DOT 4 hydraulic brake fluid.
Chain Case Oil:
Yamalube Gear Oil or equivalent (specific viscosity and type detailed in manual).
Clutch Wear:
Primary and secondary clutch rollers and buttons can wear, affecting performance and belt life.
Engine Heat:
Like many high-output 2-strokes, proper cooling system maintenance is critical to prevent overheating.
Carburetor Tuning:
Carburetors can require periodic cleaning and adjustment, especially at different altitudes.
Drive Belt Life:
Drive belt replacement is a common maintenance item; improper alignment or tension can accelerate wear.
Yamaha Motorsports:
Yamaha has a long and distinguished history in motorsports, including snowmobiles, motorcycles, and ATVs.
Viper Lineage:
The Viper nameplate is synonymous with Yamaha's high-performance 2-stroke snowmobiles, evolving from earlier SRX models.
Manufacturing Location:
Manufactured by Yamaha Motor Company, likely in their specialized snowmobile facilities.
Market Impact:
The SX Viper 700 was a popular model known for its powerful engine and balanced chassis, contributing to Yamaha's strong presence in the performance snowmobile market.
