Product Purpose:
To provide comprehensive repair and maintenance information for the 1979 Polaris Apollo 340 snowmobile, enabling owners to perform service tasks themselves.
Value Proposition:
Offers factory-level technical data and procedures at a fraction of the cost of professional shop labor, empowering owners with the knowledge to maintain and repair their vintage snowmobile.
Key Selling Points:
Extensive page count, detailed illustrations, step-by-step instructions, troubleshooting guides, factory specifications, searchable PDF format.
Engine Systems:
Engine identification, disassembly, inspection, assembly, lubrication, cooling, fuel system, ignition system, exhaust system
Drivetrain Systems:
Clutch operation and service (primary and secondary), drive chain, track system inspection and adjustment
Chassis Systems:
Frame, suspension (front and rear), steering system, skis, brakes
Electrical Systems:
Ignition system troubleshooting, lighting, basic electrical component testing
Body And Controls:
Handlebar controls, seat, body panels, controls linkage
Exhaust System:
Inspection, cleaning, and potential repair of the exhaust system components.
Maintenance Procedures:
Routine maintenance checks, lubrication, spark plug replacement, air filter cleaning/replacement, clutch maintenance
Diagnostic Procedures:
Troubleshooting common starting issues, engine performance problems, clutch slippage, track binding
Repair Procedures:
Engine rebuilds, carburetor adjustment, clutch service, brake system repair, steering component replacement
Overhaul Procedures:
Complete engine overhaul, drivetrain component overhaul
Carburetor Overhaul:
Detailed instructions for disassembly, cleaning, and reassembly of the carburetors, including jetting specifications.
Track Replacement:
Guidance on track removal and installation, as well as inspection for wear and damage.
Depth Of Coverage:
Comprehensive, covering everything from basic maintenance to major component overhauls. Designed for both novice and experienced technicians.
Documentation Style:
Step-by-step instructions with hundreds of illustrations to guide the user.
Repair Manual Purpose:
Empowers owners to perform their own repairs, saving on labor costs and ensuring correct procedures are followed.
Print Quality:
High-resolution, optimized for clear viewing and printing of all diagrams and text.
Binding Type:
Not Applicable (Digital Download)
Paper Type:
Not Applicable (Digital Download)
Searchability:
Fully searchable text for quick access to specific topics.
Printability:
Printable pages allow for on-the-job use.
Engine Type:
Two-stroke, Fan-Cooled, Twin-Cylinder (specific displacement likely 339cc or similar, common for '340' designation)
Horsepower Range:
Typically in the 25-35 HP range for this era and displacement, though exact figures require manual verification.
Torque Curve:
Not specified in product data, but manual will detail power delivery characteristics.
Carburetor Configuration:
Likely dual Tillotson or Mikuni carburetors, specific models detailed in the manual.
Fuel Type:
Pre-mixed gasoline and 2-stroke oil. Manual will specify oil-to-fuel ratio.
Ignition Type:
CDI (Capacitor Discharge Ignition) or similar breakerless system common for the era.
Lubrication System:
Premix lubrication.
Drive System:
CVT (Continuously Variable Transmission) via centrifugal clutch and torque converter/variator system.
Primary Clutch Type:
Centrifugal clutch with adjustable weights and spring.
Secondary Clutch Type:
Torque sensing (driven clutch) with adjustable spring and roller assembly.
Gear Reduction:
Integral to the clutch system, providing variable gear reduction for optimal power delivery.
Clutch Fluid:
Not applicable; uses belt and mechanical drive.
Crash Test Results:
Not applicable for snowmobiles of this era in the same way as cars.
Braking System:
Mechanical disc or drum brake, operated by handlebar lever. Manual will detail adjustment and service.
Kill Switch:
Engine kill switch on the handlebar, essential safety feature. Manual covers its operation and maintenance.
Track Guard:
Ensures proper track alignment and guards against debris ingestion.
Oil Change Frequency:
Not applicable for 2-stroke premix. Manual will detail fuel/oil mixing ratios and recommended oil types.
Spark Plug Replacement:
Intervals typically range from 1,000 to 2,500 miles or annually, depending on usage. Manual will provide specific recommendations and gap settings.
Clutch Inspection:
Recommended before each riding season and periodically throughout, with detailed service intervals in the manual.
Track Tension Adjustment:
Check and adjust as needed, typically every few hundred miles or after initial break-in. Manual provides specific procedure.
2 Stroke Oil:
Manual will specify API-TC or JASO FD rated 2-stroke oil, or manufacturer-specific blend. Crucial for engine longevity.
Coolant:
Not applicable, as it's fan-cooled.
Grease Points:
Manual will detail lubrication points for suspension, steering, and drive components, specifying lubricant type (e.g., marine grease).
Common Wear Items:
Clutch bushings/rollers, drive belt, track lugs, carbides, suspension components, ignition components.
Engine Specific Concerns:
Carburetor jetting/cleaning, reed valve wear, piston/cylinder wear due to age and usage. Manual addresses troubleshooting these.
Polar Heritage:
Polaris Industries is a long-standing manufacturer of powersports vehicles, including snowmobiles, ATVs, and motorcycles, known for innovation and performance.
Apollo Lineage:
The Apollo was a popular line for Polaris in the late 1970s and early 1980s, representing their efforts in the trail and mountain snowmobile segments. The 340 model was a common displacement for general trail riding.
Production Era:
The Polaris Apollo series was produced roughly from the mid-1970s to the early 1980s. The 1979 model year placed it within a competitive period for snowmobile manufacturers.
