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.
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.
Engine Type:
2-stroke, reed valve, air-cooled
Bore X Stroke:
48.0 mm x 44.0 mm
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
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)
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.
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).
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.
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.
