Positioning:
Professional Quality Service Repair Workshop Manual, essential resource for owners and mechanics.
Value Proposition:
Provides factory-level detail and repair guidance, aiming to save significant repair costs.
Features:
Step-by-step instructions, highly detailed exploded pictures & diagrams, A-Z coverage.
Engine Systems:
Fuel System, Lubrication, Cooling, Combustion, Crankcase, Piston, Cylinder, Crankshaft, Transmission, Balancer, Alternator, Starter Clutch, Cylinder Head, Valves
Drivetrain Systems:
Gearbox, Clutch, Transmission System
Chassis Systems:
Front Wheel, Steering System, Rear Wheel System, Frame, Body Panels, Exhaust System, Wheels, Tires, Brakes, Suspension
Electrical Systems:
Electrical System, Battery, Charging System, Ignition System, Electric Starter, Lights, Meters, Switches, Wiring Diagrams
Body Fittings:
Fenders, Body & Fixtures
Maintenance Procedures:
Periodic checks & Adjustments, Routine Maintenance, Service Schedules
Repair Procedures:
Engine Removal and Installation, Engine Rebuilds, Transmission Overhaul, Suspension Repair, Brake System Service, Electrical Troubleshooting and Repair
Diagnostic Procedures:
Troubleshooting Guides, Symptom-based Diagnosis
Depth:
Comprehensive A-Z coverage, from simple to complex repairs
Engine Type:
Liquid-cooled, 2-stroke, Reed valve, V-twin
Bore X Stroke:
64.0 mm x 54.0 mm
Compression Ratio:
6.6:1 (Typical for early models, may vary slightly)
Carburetion:
Dual Mikuni VM26SS
Horsepower:
Approximately 40-50 hp (estimated, varies with tuning)
Fuel Type:
Unleaded gasoline (recommended octane rating specified in manual)
Fuel Mixture:
2-stroke oil pre-mix or oil injection system (depending on specific model year within '1987 Onward' range)
Length:
Approximately 1855 mm (73.0 in)
Width:
Approximately 1145 mm (45.1 in)
Height:
Approximately 1075 mm (42.3 in)
Dry Weight:
Approximately 175 kg (386 lbs)
Ground Clearance:
Approximately 240 mm (9.4 in)
Safety Features:
Industry standard safety considerations for ATVs, emphasis on rider skill and responsible operation.
Braking System:
Hydraulic disc brakes front and rear
Lighting:
Halogen headlights, taillight, brake light
Oil Change Interval:
As per manual recommendations (typically based on operating hours or mileage).
Air Filter Cleaning:
Regular inspection and cleaning/replacement, critical for 2-stroke performance.
Spark Plug Replacement:
As per manual recommendations for optimal ignition.
Coolant Type:
Specific Yamaha recommended coolant or equivalent.
Transmission Oil:
Yamaha Genuine Gear Oil or equivalent API GL-4, SAE 80W-90.
2 Stroke Oil:
High-quality, JASO FD certified 2-stroke oil recommended for pre-mix or oil injection systems.
Common Wear Items:
Clutch plates, crank seals, engine bearings, chain and sprockets.
Performance Tuning Considerations:
Carburetor jetting, exhaust modifications, and reed valve upgrades are common for performance enhancement, all detailed in advanced sections of the manual.