Target Audience:
Polaris Centurion owners seeking to perform their own maintenance and repairs
Benefit:
Empowers owners to maintain and repair their snowmobile effectively, saving time and money.
Content Type:
Factory-level technical information, step-by-step procedures, diagnostic aids
Knowledge Source:
Mimics the knowledge of factory-trained technicians
Engine:
Complete engine overhaul, tuning, component diagnostics, lubrication systems
Fuel System:
Carburetor adjustment and rebuild, fuel pump, fuel lines, fuel tank maintenance
Ignition System:
Spark plug specifications, timing, coil testing, CDI unit diagnostics
Cooling System:
Liquid cooling system maintenance, radiator, thermostat, coolant specifications (if applicable)
Drivetrain:
Clutch inspection and service (drive and driven clutches), chaincase lubrication and adjustment, track system inspection
Brakes:
Brake system inspection, adjustment, hydraulic components (if applicable), disc/drum service
Suspension:
Front and rear suspension servicing, shock absorber maintenance, ski alignment and adjustment
Steering:
Steering linkage inspection and adjustment, handlebar components, tie rod ends
Electrical System:
Wiring diagrams, lighting system, battery maintenance, starter system diagnostics
Bodywork:
Body panel removal and installation, seat maintenance, decals and graphics
Maintenance:
Scheduled maintenance tasks, lubrication points, filter replacement, general upkeep
Troubleshooting:
Diagnostic flowcharts, common problem identification, symptom-based troubleshooting guides
Repair:
Step-by-step repair instructions for all major components, from simple adjustments to major overhauls
Rebuilds:
Detailed instructions for engine rebuilds, transmission overhauls, and clutch servicing
Adjustments:
Carburetor tuning, chain tension, brake adjustments, steering alignment
Disassembly Reassembly:
Comprehensive guides for taking apart and putting back together all vehicle systems
Depth:
Comprehensive (covers everything from basic oil changes to complete engine rebuilds)
Quality:
Hundreds of illustrations to aid in repair and maintenance
Feature:
Searchable PDF functionality for quick access to information
Feature:
Ability to print specific pages as needed
Description:
Details for the specific engine(s) equipped on the 1979 Polaris Centurion (e.g., 244cc, 335cc, 440cc fan-cooled or liquid-cooled Fuji engines often used in this era, specific displacement to be confirmed by manual content).
Horsepower Range:
Typically in the range of 20-40 HP, depending on engine displacement (specifics in manual).
Torque Characteristics:
Information on engine torque output and power band (specifics in manual).
Carburetion:
Details on carburetor models (e.g., Mikuni, Tillotson), jetting specifications, and adjustment procedures.
Oil Mixing:
Correct oil-to-gas ratio for pre-mix or oil injection systems.
Type:
Fan-cooled or liquid-cooled, as per specific Centurion model variant (manual will detail).
Clutch System:
Detailed service procedures for the Polaris P-85 or Comet drive clutch and driven clutch, including spring, roller, and weight inspection and replacement.
Chaincase Lubrication:
Recommended lubricant type and capacity for the chaincase.
Gear Reduction:
Information on internal gear reduction ratios within the chaincase.
Dashboard Features:
Description of the instrument cluster, including speedometer, tachometer (if equipped), and warning lights.
No Electronic Aids:
As a 1979 model, lacks modern electronic driver assistance features.
No Connectivity:
No integrated electronic connectivity features.
Engine Tune Up:
Recommended intervals for spark plug replacement, carburetor cleaning, and ignition timing checks.
Clutch Service:
Intervals for inspecting and servicing drive and driven clutches for optimal performance and longevity.
Chaincase Lubrication:
Recommended frequency for checking and changing chaincase lubricant.
Chaincase Oil:
Specific type and viscosity of lubricant recommended for the chaincase (e.g., 2-stroke gear oil, specific SAE grade).
Coolant:
If liquid-cooled, specifications for the appropriate coolant mixture (e.g., ethylene glycol-based, water ratio).
Carburetor Fouling:
Common issues like carburetor jetting or needle wear leading to performance problems.
Clutch Wear:
Wear on clutch weights, rollers, and sheave surfaces affecting engagement and belt life.
Track Tension:
Importance of maintaining correct track tension to prevent excessive wear or derailment.
Ignition System Reliability:
Potential issues with older CDI units or ignition coils requiring testing and possible replacement.
Storage Preparation:
Guidance on proper off-season storage, including fuel stabilization and protection.
Polaris History:
Polaris Industries, a long-standing American manufacturer of snowmobiles, ATVs, and personal watercraft, known for innovation in the powersports industry.
Centurion Positioning:
The Centurion was a key model in Polaris's lineup during the late 1970s, representing their efforts in performance and comfort for trail riding.
Manufacturing Era:
Produced in the late 1970s, a period of significant development and competition in the snowmobile market.
