Basic Information Identification Make: Polaris Model: Apollo 340 Year: 1979, 1980 Vehicle Type: Snowmobile Codes Engine Code: Not specified in product information, but typically a 340cc two-stroke engine Introduction Market Position Target Audience: Owners of 1979-1980 Polaris Apollo 340 snowmobiles, independent repair shops, and automotive technicians seeking detailed service information. Competitive Analysis Value Proposition: Provides specific, manufacturer-level repair data, enabling significant cost savings on maintenance and repairs compared to dealer service or guesswork. Key Features Manual Attributes: Step-by-step instructions, diagrams, illustrations, wiring schematics, and precise specifications. Benefit For Owners: Empowers owners with the knowledge to understand their snowmobile, discuss repairs knowledgeably with technicians, and perform basic to intermediate maintenance themselves. Manual Details Coverage Areas Coverage Scope: Full service and repair instruction, diagnostics, troubleshooting Page Count Estimated Page Count: Estimated 200-400 pages (typical for comprehensive workshop manuals) Manual Type Manual Type: Service Repair Workshop Manual Language Language: English Format File Format: PDF Manual Coverage Systems Covered Engine Systems: Engine overhaul, cylinder head, pistons, crankshaft, lubrication system, cooling system (air-cooled), fuel system (carburetor adjustment/cleaning), ignition system (CDI/points), exhaust system. Drivetrain Systems: Drive clutch (primary), driven clutch (secondary), chaincase (gearbox), driveshaft, track system. Electrical Systems: Wiring schematics, lighting, ignition, starter (if applicable), kill switch, throttle linkage. Chassis And Suspension Systems: Frame inspection and repair, front suspension (ski and spindle components), rear suspension (bogies, idler wheels, suspension arms), steering system (handlebars, tie rods). Brake Systems: Brake caliper, brake disc, brake lever, brake cable adjustment. Bodywork And Trim: Body panel removal and installation, seat, windshield, decals. Procedures Included Maintenance Procedures: Routine inspections, lubrication points, cleaning procedures, track tension adjustment, clutch maintenance, spark plug replacement, air filter cleaning/replacement, gearcase oil change. Repair Procedures: Engine rebuilds, clutch service, carburetor tuning, suspension component replacement, brake system repair, electrical troubleshooting and repair, chaincase servicing. Troubleshooting Guides: Step-by-step diagnostic flowcharts for common performance issues, starting problems, and operational malfunctions. Technical Depth Depth Of Information: Comprehensive; covers basic maintenance to complete engine and chassis overhauls, suitable for both DIY owners and professional mechanics. Manual Specifications File Format PDF Features: Searchable text, bookmarked sections for easy navigation, ability to print specific pages. Print Quality Print Capability: Printable; allows users to print individual pages or the entire manual for hardcopy reference. Binding Type Digital Binding: N/A (Digital PDF) Paper Type Digital Paper Type: N/A (Digital PDF) Engine Specifications Primary Engine Engine Type: Two-stroke, piston-ported, air-cooled Displacement: 334 cc (approximate, based on '340' designation) Bore X Stroke: Specifics available within the manual, but typically around 66mm x 60mm for this class. Carburetion: Likely a single Mikuni or Keihin carburetor (e.g., VM series), specific model and jetting details in manual. Performance Horsepower Estimate: Estimated 25-35 HP (depending on exact tune and model year variations) Fuel System Fuel Type: Unleaded gasoline mixed with two-stroke engine oil (specific ratio in manual) Ignition System Ignition Type: Capacitor Discharge Ignition (CDI) or breaker points ignition system, depending on exact model/year. Transmission Primary Clutch Type: Variable ratio, centrifugal clutch (e.g., Comet Duster or similar) Secondary Clutch Type: Variable ratio, spring-loaded driven clutch Gearbox Type: Chaincase with reduction gearing Fluid Type: Specific gear oil (e.g., SAE 90 or 80W-90 gear oil), capacity and change interval detailed in manual. Dimensions Exterior Track Width: Typically 15-inch width track Track Length: Varies by model, but commonly around 120-136 inches. Weights Dry Weight: Approximately 350-400 lbs (dry weight estimate) Safety Features Active Features Throttle Control: Thumb throttle with safety lockout mechanism Passive Features Kill Switch: Engine kill switch easily accessible on handlebars Braking System: Mechanical disc brake system Technology Features Infotainment Instrumentation: Basic instrumentation: speedometer (if equipped), engine kill switch, possibly a temperature warning light. Driver Assistance Assistive Features: N/A (primitive design era) Maintenance Service Intervals Oil Change Interval: Refer to manual for specific gearbox oil change intervals (typically annually or every 100 hours). Spark Plug Interval: Spark plug inspection/replacement typically every 1000-1500 miles or annually. Specific plug type and gap in manual. Clutch Maintenance: Clutch inspection and cleaning recommended annually or every 50-100 hours of operation. Fluid Specifications Engine Oil Mix: Specific two-stroke engine oil and mix ratio (e.g., 40:1 or 50:1) will be detailed in the manual. Gearcase Oil: Recommended gear oil specification (e.g., SAE 90) and fill level for the chaincase. Known Issues Common Wear Items: Clutch wear (weights, rollers, buttons), track lugs, ski carbides, suspension bushings, drive clutch spring, carburetor jets clogging. Ignition System Care: Maintenance of CDI module, ignition coil, and spark plug wires to ensure reliable ignition. Vehicle History Brand Heritage Polaris History: Polaris is a long-standing American manufacturer of powersports vehicles, known for its innovation in snowmobiles since the 1950s. Model Evolution Apollo Lineage: The Apollo line was a significant part of Polaris's snowmobile offerings in the late 1970s and early 1980s, focusing on trail riding and general utility. Production Production Era: Produced for model years 1979 and...