Segment:
Performance Snowmobile (Trail/Touring)
Competitors:
Ski-Doo Mach Z, Yamaha Apex, Arctic Cat Z1 Turbo
Vehicle Highlight:
Polaris Fusion FST model, known for its Liberty Twin turbocharged engine, offering strong acceleration and top-end speed for its era.
Benefit To Owner:
Empowers owners to perform essential maintenance, diagnostics, and repairs, saving on labor costs and ensuring optimal performance and longevity of their Polaris FS FST.
Systems Covered:
Engine, Fuel System, Ignition System, Clutch System, Drive System, Suspension, Steering, Braking System, Electrical System, Bodywork, Cooling System, Track System, Accessories
Estimated Pages:
Hundreds of pages (exact count not specified, but described as 'complete' and 'hundreds')
Type:
Factory Service Repair Manual
Engine Mechanical:
Detailed breakdown and reassembly of the Polaris FST engine, including cylinder head, pistons, crankshaft, connecting rods, timing components, and lubrication system.
Fuel System Injection:
Coverage of the fuel pump, injectors, fuel lines, throttle body, and electronic fuel injection (EFI) control module diagnostics and service.
Ignition System:
Includes information on spark plugs, ignition coils, ECU control of ignition timing, and troubleshooting ignition faults.
Drive Clutch Driven Clutch:
Comprehensive instructions for the removal, inspection, maintenance, and adjustment of the primary (drive) and secondary (driven) clutches, including roller and spring replacements.
Transmission Drive Line:
Details on the chaincase, gears, lubrication, and removal/installation of the drive axle and track assembly.
Suspension Front Rear:
Service procedures for front A-arm suspension, shock absorbers, springs, and rear suspension components, including geometry adjustments.
Steering System:
Includes steering post, tie rods, skis, and steering linkage service, alignment procedures, and troubleshooting for play or stiffness.
Braking System:
Information on hydraulic brake system service, including caliper removal/installation, brake pad replacement, fluid bleeding, and master cylinder maintenance.
Electrical System Wiring:
Detailed wiring diagrams, fuse box information, lighting system service, battery maintenance, starter motor, and stator/generator testing.
Bodywork Chassis:
Instructions for removing and installing body panels, seats, windshields, and general chassis inspection and repair.
Cooling System:
Information on the liquid cooling system, radiator, hoses, thermostat, and coolant specifications.
Track System Drive Sprockets:
Guidance on track tension adjustment, removal, installation, and inspection of drive sprockets.
Routine Maintenance:
Oil changes, filter replacements, lubrication points, spark plug checks, and general inspection procedures.
Troubleshooting:
Systematic diagnostic charts and procedures for identifying and resolving common operational issues and component failures.
Component Rebuild:
Detailed instructions for overhauling key components such as the engine, clutches, and transmission.
Adjustments:
Clutch alignment, throttle cable adjustment, steering alignment, and suspension adjustments.
Electrical Diagnostics:
Testing of sensors, actuators, wiring harnesses, and EFI system components using multimeters and diagnostic tools.
Depth:
Comprehensive, covering all aspects from routine maintenance to full engine and component rebuilds. Suitable for both DIY enthusiasts and professional technicians.
Engine Type:
4-Stroke, Twin-Cylinder, Turbocharged
Engine Family:
Polaris Liberty Twin FST
Displacement:
750cc (approximate, specific FST variants may vary slightly)
Horsepower Estimate:
130-150 HP (approximate, depending on boost levels and specific tuning)
Torque Estimate:
Not specified in product data, but significant for its class.
Fuel Delivery:
Electronic Fuel Injection (EFI) with individual throttle bodies.
Fuel Type:
Unleaded Gasoline (Octane rating specified in manual)
Ignition Type:
Digital CDI with electronic advance
Cooling Method:
Liquid-cooled
Crash Test Results:
Not Applicable (Snowmobile safety is primarily based on design, rider skill, and equipment)
Braking System:
Hydraulic disc brake system for reliable stopping power.
Throttle Limiter:
Potential for throttle control features (refer to manual for specifics).
Lighting:
Headlights, taillights, and brake lights for visibility.
Body Construction:
Reinforced chassis and body panels for structural integrity.
Oil Change:
Typically every 1,000-1,500 miles or annually (refer to manual for precise intervals).
Clutch Inspection:
Recommended inspection at 500-1,000 miles for wear on rollers, weights, and belts.
Track Tension:
Check and adjust track tension periodically as per manual specifications.
Engine Oil Type:
Synthetic 0W-40 or 5W-40 (specific Polaris-approved oils or equivalent).
Engine Oil Capacity:
Approx. 4.5-5.0 quarts (with filter change).
Coolant Type:
Ethylene Glycol based antifreeze (e.g., Polaris Premium All-Season Coolant or equivalent).
Brake Fluid Type:
DOT 3 or DOT 4 Hydraulic Brake Fluid.
Chaincase Oil Type:
Specific gear oil for chaincases (e.g., Polaris Premium Chaincase Lubricant or SAE 75W-90 Synthetic Gear Oil).
Turbocharger Reliability:
Early turbocharged models can be sensitive to maintenance intervals and fuel quality; potential for turbo seal leaks or wastegate issues if not properly maintained.
Clutch Belt Wear:
High-performance engines can lead to accelerated belt wear if clutches are not properly aligned or if improper belt is used.
Cooling System Efficiency:
Ensure proper coolant levels and radiator cleanliness for optimal performance, especially under heavy load.
Manufacturer:
Polaris Industries, a long-standing American manufacturer of powersports vehicles.
Platform:
The Fusion series was a performance-oriented platform for Polaris, integrating the Liberty engine for enhanced power.
Engine Development:
The FST (Freedom Liberty Trail) engine was Polaris's answer to the growing demand for powerful, turbocharged 4-stroke snowmobile engines in the mid-2000s.
Manufacturing Location:
Primarily manufactured in the United States by Polaris Industries.
Production Years:
2005-2008 for the Fusion platform incorporating the FST engine.
