🏷️ Basic Information

Make:

Yamaha

Model:

Snoscoot SV 80 E

Type:

Snowmobile

Product Type:

Service Repair Manual

Production Years Covered:

1988, 1989, 1990, 1991

Model Code:

SV 80 E

👋 Introduction

Segment:

Entry-level, youth-oriented, lightweight recreational snowmobile.

Target Audience:

Young riders, beginners, casual snowmobilers looking for an accessible and fun machine.

Key Competitors:

Arctic Cat Jag, Polaris Indy Lite, Ski-Doo Safari (similar displacement/performance class).

Design Philosophy:

Lightweight, user-friendly, maneuverable, and affordable.

Unique Selling Points:

Compact size, easy handling, reliable Yamaha engineering, suitable for smaller riders.

📋 Manual Details

Overall Scope:

Comprehensive service and repair information for the Yamaha Snoscoot SV 80 E.

Estimated Pages:

Over 250 pages (typical for this era of service manual)

Type:

Factory Service Manual / Workshop Manual

Primary Language:

English

Digital Format:

PDF

📖 Manual Coverage

Powertrain:

Engine overhaul, lubrication system, cooling system, fuel system, exhaust system.

Drivetrain:

Clutch system (primary and secondary), drive belt, chain case, drive axle, track system.

Chassis And Suspension:

Front suspension (spindles, shocks, springs, steering), rear suspension (skid frame, shocks, idler wheels, track), skis, steering system.

Electrical:

Ignition system, lighting system, charging system (stator, rectifier/regulator), battery, starter motor, wiring diagrams.

Bodywork And Controls:

Handlebars, controls, seat, body panels, decals, storage.

Maintenance:

Routine inspections, lubrication points, belt inspection/replacement, spark plug checks, filter cleaning/replacement, track tension adjustment.

Troubleshooting:

Diagnostic flowcharts for common starting, running, and performance issues.

Repair:

Step-by-step instructions for component disassembly, repair, reassembly, and adjustment.

Diagnostics:

Detailed diagnostic procedures for engine, electrical, and chassis components.

Specifications And Tolerances:

Torque specifications, clearances, fluid capacities, electrical resistance values.

Depth:

Comprehensive. Covers everything from basic maintenance to full engine and transmission overhauls. Suitable for both DIY enthusiasts and professional technicians.

📊 Manual Specifications

Format:

PDF

Searchability:

Fully searchable text for quick access to information.

Resolution:

High resolution, ensuring clarity of diagrams and text.

Binding:

N/A (Digital Format)

Paper:

N/A (Digital Format)

⚙️ Engine Specifications

Engine Type:

2-stroke, reed valve, air-cooled

Displacement:

79 cc

Bore X Stroke:

48.0 mm x 44.0 mm

Compression Ratio:

6.4:1

Carburetor:

Mikuni VM20SS

Ignition:

CDI (Capacitor Discharge Ignition)

Horsepower Estimate:

Approximately 8-10 HP (engine output)

Cooling System:

Fan-assisted air cooling

Fuel Type:

Unleaded gasoline

Oil Mixture Ratio:

50:1 (Yamaha Premium 2-M Marine Oil or equivalent 2-stroke oil)

Spark Plug Gap:

0.6 - 0.7 mm (0.024 - 0.028 in)

Spark Plug Type:

NGK BR9ES or equivalent

🔧 Transmission

Type:

Automatic CVT (Continuously Variable Transmission) with forward and reverse

Drive System:

Chain drive (from transmission to drive axle)

Clutch System:

Dry centrifugal clutch (primary) and adjustable clutch (secondary)

Chain Case Oil Type:

Yamaha Gear Oil for Outboard Motors or equivalent SAE 80 API GL-4

Chain Case Oil Capacity:

Approximately 120 ml (0.12 L / 4 oz)

📐 Dimensions

Overall Length:

Approx. 1960 mm (77.2 in)

Overall Width:

Approx. 910 mm (35.8 in)

Overall Height:

Approx. 975 mm (38.4 in)

Dry Weight:

Approx. 105 kg (231 lbs)

Track Width:

Approx. 800 mm (31.5 in)

Ski Stance:

Approx. 710 mm (28.0 in)

Track Dimensions:

Standard: 305 mm x 1920 mm (12 in x 75.6 in)

🛡️ Safety Features

Certification:

N/A (Consumer recreational vehicle, not typically crash-tested or rated like automobiles)

Braking System:

Disc brake, operated by left handlebar lever.

Kill Switch:

Thumb throttle with safety interlock and emergency kill switch (lanyard type).

Lighting:

Headlight and taillight for visibility.

Ergonomics:

Designed for smaller riders with accessible controls.

💡 Technology Features

Display:

Basic gauge cluster: speedometer, tachometer (optional/integrated), engine temperature warning light.

Features:

N/A (Basic recreational vehicle, no modern driver assistance systems).

Features:

N/A (No electronic connectivity features).

🔧 Maintenance

Initial Service:

Break-in period service recommended at 10-20 hours or 100-200 miles, involving initial clutch/belt inspection and chain case lubrication.

Regular Maintenance:

Check track tension and condition every 50-100 hours, inspect drive belt wear every 100 hours, clean/inspect carburetor and air filter every 100-200 hours, change chain case oil annually or every 200 hours.

Engine Oil Type:

Yamaha Premium 2-M Marine Oil or equivalent API-TC, JASO FD rated 2-stroke oil.

Chain Case Oil Type:

Yamaha Gear Oil for Outboard Motors or equivalent SAE 80 API GL-4.

Fuel Tank Capacity:

Approx. 7.0 Liters (1.8 US Gallons)

Common Wear Items:

Drive belt, carbides on skis, track (due to age/use), suspension bushings, carburetor adjustments.

Carburetor Clogging:

Common with older fuel systems; requires regular cleaning and proper fuel storage.

Clutch Slippage:

Can occur due to worn belt or clutch components; requires inspection and adjustment/replacement.

Storage:

Proper off-season storage procedures (fuel stabilizer, fogging oil, battery care) are critical for longevity.

📚 Vehicle History

Heritage:

Yamaha Motor Corporation is a global leader in powersports, known for innovation, quality, and reliability in motorcycles, ATVs, personal watercraft, and snowmobiles.

Snoscoot Line:

The Snoscoot series was Yamaha's entry into the lightweight, youth-oriented snowmobile market, offering an alternative to larger, more powerful machines.

Manufacturing Origin:

Japan (Yamaha's primary manufacturing hub for snowmobiles during this era).

Lifespan:

The SV 80 E model was produced for a relatively short period, focusing on its niche market.

🏆 Awards & Recognition

Market Reception:

The Snoscoot SV 80 E was generally well-received in its niche for its ease of use and Yamaha's reputation for quality, though its performance was modest.

Consumer Feedback:

Praised for its suitability for younger riders and beginners, and its lightweight design.