This workshop service manual covers the Polaris Apollo 340 snowmobile models from the 1979 and 1980 production years. The Apollo series represents a significant part of Polaris's legacy in the competitive snowmobile market of the late 1970s and early 1980s, known for its engineering and performance. This manual provides comprehensive information for maintaining and repairing these iconic machines, ensuring their continued operation for enthusiasts and riders. This 477-page English-language manual offers detailed coverage of all major vehicle systems, including the engine, fuel, ignition, drive, suspension, braking, and electrical systems. It features step-by-step repair instructions, disassembly and assembly guides, adjustment procedures, and troubleshooting diagnostics, all supported by clear photographic, drawn, and schematic illustrations. The manual is designed for easy readability and understanding, providing factory specifications, torque values, and guidance on special tools, making it an essential resource for owners and technicians alike. 🏷️ Basic Information Identification Make: Polaris Model: Apollo 340 Model Variant: Snowmobile Year: 1979, 1980 👋 Introduction Market Position Target Audience: Enthusiasts and mechanics seeking detailed repair and maintenance information for the Polaris Apollo 340. Key Features Instructional Style: Simple, precise explanations with photographic, drawn, and schematic illustrations. Ease Of Use: Designed for easy readability and understanding, even for those with less experience. Completeness: Contains all necessary data, characteristics, instructions, and methodologies for effective repair. Diagrams: Includes exploded diagrams, drawings, and photos for clear procedural guidance. 📋 Manual Details Coverage Areas Applicable Models: Polaris Apollo 340 (1979-1980) Page Count Total Pages: 477 Manual Type Type: Workshop Service Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Engine Service: Detailed engine repair, disassembly, assembly, and adjustment procedures. Fuel System: Carburetor tuning, fuel pump, fuel lines, and fuel tank service. Ignition System: Magneto ignition system, spark plugs, and timing adjustments. Drive System: Clutch (drive and driven) service, chaincase maintenance, and track adjustment. Suspension: Front and rear suspension component inspection, repair, and adjustment. Braking System: Brake caliper, master cylinder, and brake cable service and adjustment. Electrical System: Lighting system, kill switch operation, and basic electrical troubleshooting. Chassis And Body: Frame inspection, seat removal, handlebar adjustments, and body panel servicing. Cooling System: Information on fan cooling system, fan belt inspection and replacement. Procedures Included Maintenance: Scheduled maintenance tasks, lubrication points, and general upkeep. Troubleshooting: Diagnostic procedures for common operating issues and component failures. Repair: Step-by-step repair instructions for all major vehicle systems. Disassembly Assembly: Comprehensive guides for removing and reinstalling components. Adjustments: Detailed instructions for adjusting clutches, brakes, ignition timing, and more. Special Tools: Identification and usage instructions for specialized service tools required for repairs. Tightening Torques: Provides specific torque values for critical fasteners and assembly points. Technical Depth Depth: Comprehensive, bumper-to-bumper coverage suitable for DIY enthusiasts and professional mechanics. Pictorial Diagrams: Includes detailed pictorial diagrams, exploded views, and photographs for all service procedures. Factory Specifications: Offers factory specifications, allowable limits, and wear limits for accurate servicing. 📊 Manual Specifications File Format File Quality: High-resolution PDF with clear, legible text and diagrams. Print Quality Printability: Fully printable, allowing users to print specific sections or the entire manual. Binding Type Binding Type: N/A (Digital PDF Download) Paper Type Paper Type: N/A (Digital PDF Download) Compatibility Os Compatibility: Windows, Mac, Linux OS Requirements Software Requirement: Adobe Reader ⚙️ Engine Specifications Primary Engine Engine Type: 2-stroke, fan-cooled (typical for model era) Engine Displacement: 339cc (approximate, based on model name) Performance Horsepower: Specifies horsepower and torque curves where available in manual. Fuel System Carburetor: Details specific carburetor models, jetting, and adjustment procedures. Fuel Type: Leaded gasoline, unleaded gasoline (with appropriate oil mix). Lubrication Oil Mixture: Specifies recommended oil-to-fuel ratio for 2-stroke engine. 🔧 Transmission Standard Drive System: Automatic (CVT-type clutch system) Driven Clutch: Service and calibration procedures for the driven clutch (e.g., Comet or Polaris clutch). Drive Clutch: Service, alignment, and weight adjustment procedures for the drive clutch. Features Chaincase Oil: Specifications for chaincase lubricant and capacity. 📐 Dimensions Weights Dry Weight: Details dry weight specifications provided by Polaris for the Apollo 340. Dimensions Overall Length: Specifies overall length of the snowmobile. Overall Width: Specifies overall width of the snowmobile. Track Dimensions: Details track width, length, and pitch. 🛡️ Safety Features Ratings Operational Safety: Emphasizes safety precautions for operation and maintenance. Active Features Kill Switch: Procedure for checking and ensuring proper operation of the engine kill switch. Passive Features Body Panels: Information on securement and integrity of body panels for protection. 💡 Technology Features Infotainment Gauge Cluster: Details on speedometer, tachometer (if equipped), and indicator lights. Driver Assistance Lighting System: Service procedures for headlight, taillight, and brake light operation. Connectivity Electrical Components: Basic electrical system schematics and component identification. 🔧 Maintenance Service Intervals Periodic Maintenance: Details recommended service schedules for regular maintenance tasks. Fluid Specifications Spark Plugs: Specifies correct spark plug type, gap, and torque. Coolant Type: N/A (Fan-cooled engine, does not use...