Market Position:
The Aprilia Pegaso 655 was positioned as a versatile dual-sport or adventure-styled motorcycle, appealing to riders seeking a blend of on-road comfort and off-road capability. It aimed to be an accessible and practical option within the burgeoning dual-sport market.
Target Audience:
Riders seeking a practical and stylish Italian dual-sport motorcycle for commuting, touring, and light off-road use. Also appeals to enthusiasts looking to perform their own maintenance and understand the mechanics of their Aprilia.
Competitive Analysis:
Competed with other single-cylinder dual-sport motorcycles of the era, such as offerings from BMW (F650), Honda (Transalp - though often twin-cylinder), Suzuki (DR650), and Yamaha (XT600/XT660). The Pegaso distinguished itself with its Italian styling and often more road-biased setup compared to some competitors.
Key Features:
Single-cylinder engine offering a balance of torque and manageable power, comfortable ergonomics for long-distance riding, capable suspension for varied road conditions, distinctive Aprilia styling, and a relatively straightforward mechanical design making it amenable to home maintenance with the right documentation.
Coverage Areas:
Service repairs, periodic maintenance, engine, fuel system, exhaust system, cooling and lubrication system, chassis, electrical system, servicing information, emission control
Page Count:
Hundreds of pages
Manual Type:
Workshop Manual / Factory Service Repair Manual
Manual Purpose:
Comprehensive repair and maintenance guidance for certified technicians and advanced DIY mechanics.
Language:
English, German
Systems Covered:
Engine (internal components, timing, valve adjustment), Fuel System (carburetor tuning, fuel pump, lines), Exhaust System (component inspection, emissions), Cooling System (radiator, thermostat, coolant), Lubrication System (oil pump, filter, oil specifications), Chassis (frame, suspension, steering, wheels, tires), Electrical System (wiring diagrams, battery, charging system, ignition, lighting, instruments), Braking System (hydraulic components, pads, discs), Drivetrain (chain drive, sprockets)
Electrical System Details:
Wiring diagrams, charging system (stator, regulator/rectifier), ignition system (CDI, coil), lighting (headlight, taillight, indicators), horn, instrument cluster, starter motor circuit.
Emission Control System:
Information on emission control devices, catalytic converter inspection (if fitted), and basic checks for compliance with regulations of the time.
Procedures Included:
Routine maintenance, troubleshooting common faults, engine overhaul and rebuilding, carburetor synchronization and jetting, cooling system flushing and filling, brake system bleeding and pad replacement, suspension adjustments and rebuilds, electrical system diagnostics, component removal and installation, lubrication point identification and service, emissions control system inspection
Chassis Repair Procedures:
Fork overhaul, shock absorber inspection and replacement, steering head bearing service, wheel bearing replacement, tire mounting and balancing, brake caliper overhaul, master cylinder service.
Technical Depth:
Comprehensive from basic routine maintenance to advanced engine and electrical system diagnostics and repair. Includes detailed diagrams, torque specifications, tolerances, and step-by-step instructions suitable for experienced mechanics and diligent DIY enthusiasts.
Diagnostic Information:
Includes troubleshooting flowcharts and diagnostic procedures for common faults across all major systems.
Engine Type:
Four-stroke, single-cylinder, DOHC, 4 valves
Displacement:
650cc (approx.)
Bore X Stroke:
Information detailed within manual (typically around 100mm x 84mm)
Compression Ratio:
Information detailed within manual (typically around 9.5:1 to 10.5:1)
Engine Layout:
Single-cylinder, forward-inclined
Horsepower:
Approx. 48-50 HP at 6,500-7,000 RPM (specifics vary by market and tune)
Torque:
Approx. 58-60 Nm at 5,000 RPM (specifics vary by market and tune)
Fuel Delivery:
Carburetor(s) - likely a single large-bore Mikuni or Dell'Orto
Fuel Type:
Unleaded gasoline (RON 95 or higher)
Cooling Method:
Liquid-cooled
Oil Capacity:
Information detailed within manual (typically around 2.2-2.5 liters with filter)
Oil Type:
Information detailed within manual (e.g., SAE 10W-40, API SG or higher, JASO MA)
Length:
Information detailed within manual
Width:
Information detailed within manual
Height:
Information detailed within manual
Dry Weight:
Approx. 180-190 kg (specifics vary)
Wet Weight:
Approx. 195-205 kg (with fluids, specific variant dependent)
Fuel Tank Capacity:
Approx. 18-20 liters (specifics vary)
Safety Ratings:
As a motorcycle, does not receive formal crash test ratings like automobiles. Safety relies on rider skill and proactive maintenance.
Active Safety Features:
Disc brakes front and rear, capable suspension providing stability, proper tire selection crucial for grip.
Passive Safety Features:
Sturdy frame construction, rider protective gear (helmet, apparel) is paramount and not part of the vehicle itself.
Infotainment System:
Basic analog instrumentation typical of the era: speedometer, tachometer, odometer, trip meter, coolant temperature gauge, and indicator lights (turn signals, oil pressure, neutral, high beam).
Driver Assistance Features:
No electronic rider aids like ABS or traction control found on this 1995 model. Rider input is the primary control.
Oil Change Interval:
Information detailed within manual (typically every 3,000-5,000 km or annually)
Air Filter Replacement:
Information detailed within manual (e.g., every 6,000-10,000 km or as needed)
Spark Plug Replacement:
Information detailed within manual (e.g., every 8,000-12,000 km)
Valve Clearance Check:
Information detailed within manual (e.g., every 10,000-15,000 km)
Coolant Type:
Information detailed within manual (e.g., Ethylene Glycol based antifreeze, 50% concentration)
Brake Fluid Type:
Information detailed within manual (e.g., DOT 4)
Transmission Oil Type:
Information detailed within manual (often a shared sump with engine oil, check viscosity requirement)
Common Wear Items:
Clutch plates, brake pads, fork seals, wheel bearings, chain and sprockets are typical wear items. Carburetor synchronization can drift over time.
Potential Electrical Issues:
As with many bikes of this era, electrical connections (especially grounds) can corrode, leading to intermittent faults. Regulator/rectifier units can also be a point of failure.
Engine Specific Considerations:
The single-cylinder engine, while generally robust, requires diligent maintenance, especially valve adjustments and correct oil levels, to maintain optimal performance and longevity.
Brand Heritage:
Aprilia is an Italian manufacturer with a rich history in motorcycle racing and performance. Founded in 1945, Aprilia has a reputation for producing innovative and often sporting motorcycles across various segments.
Model Evolution:
The Pegaso line began in the late 1980s. The 655 represented an evolution of the single-cylinder platform, often utilizing Rotax-derived engines, aiming to offer a more modern and refined package for the dual-sport market. Later generations saw significant updates in styling, components, and engine technology.
Production Era:
Mid-1990s (specifically 1995 for this manual)
