Market Segment:
Classic scooter enthusiasts, urban commuters seeking reliable and stylish transportation.
Comparative Models:
Competes with other 80cc and 125cc scooters of its era, often considered a premium option within the European scooter market.
Model Highlights:
Automatic transmission (CVT), distinctive Vespa styling, robust construction, availability in 80cc and 125cc variants.
Coverage Description:
Comprehensive service and repair information for Piaggio Vespa PK80S Automatica and PK125S Automatica models. Covers all mechanical, electrical, and bodywork aspects.
Estimated Page Count:
300-400 pages (typical for this type of manual)
Manual Type:
Service Repair Manual
Language:
English (likely, based on common manual distribution)
Format:
Digital (PDF) or Printed
Engine Systems:
Engine overhaul, cooling system, lubrication system, fuel system, ignition system, exhaust system, starting system, charging system.
Transmission Systems:
Automatic transmission (CVT) operation, maintenance, repair, fluid specifications, and troubleshooting.
Chassis Systems:
Suspension (front and rear), steering system, braking system (front and rear), wheels, and tires.
Electrical Systems:
Wiring diagrams, lighting system, instrumentation, battery, starter motor, alternator, ignition switch, indicators, horn.
Bodywork And Frame:
Frame inspection, body panel removal and installation, fairings, seats, storage compartments, painting and finishing.
Maintenance Procedures:
Routine checks, oil changes, filter replacements, spark plug servicing, brake adjustments, chain lubrication (if applicable, though Automatica implies CVT), coolant checks.
Repair Procedures:
Engine rebuilds, carburetor tuning, clutch service, transmission overhaul, shock absorber replacement, brake caliper servicing, electrical component diagnosis and replacement.
Troubleshooting Guides:
Diagnostic charts for common problems, identifying symptoms, and providing step-by-step solutions for mechanical and electrical issues.
Depth Of Coverage:
Detailed specifications, assembly/disassembly procedures, torque values, special tool requirements, diagnostic fault codes, and overhaul instructions.
Digital File Format:
PDF (searchable text, printable pages, high-resolution images)
Print Quality:
High-resolution, clear diagrams and text (if printed version available)
Binding Type:
Spiral-bound or perfect-bound (for printed manuals), ensuring lay-flat usability in a workshop environment.
Paper Type:
Durable, coated paper stock to withstand workshop conditions (for printed manuals)
Engine Type:
Two-stroke, single-cylinder, forced air-cooled
Bore Stroke Pk80:
48 mm x 43 mm (approximate)
Bore Stroke Pk125:
55 mm x 52 mm (approximate)
Displacement Pk125:
124 cc
Horsepower Pk80:
Approx. 5-6 HP (varies with tuning and specific version)
Horsepower Pk125:
Approx. 7-8 HP (varies with tuning and specific version)
Carburetor Type Pk80:
Dell'Orto PHBG 19 BS (typical)
Carburetor Type Pk125:
Dell'Orto PHBG 20 BS (typical)
Fuel Type:
Unleaded gasoline (minimum 90 RON) with 2% or 2.5% 2-stroke oil mixture
Transmission Type:
Automatic (CVT - Continuously Variable Transmission)
Clutch Type:
Automatic centrifugal clutch
Transmission Fluid Type:
Gear oil for the reduction gears (e.g., SAE 30 or SAE 80/90, check manual for specific grade)
Transmission Fluid Capacity:
Approx. 0.2 liters (check manual for precise capacity)
Width:
Approx. 700 mm (handlebar width)
Height:
Approx. 1100 mm (seat height varies)
Dry Weight Pk80:
Approx. 90-95 kg
Dry Weight Pk125:
Approx. 95-100 kg
Gross Vehicle Weight Rating:
Approx. 250 kg (check specific model plate)
Fuel Tank Capacity:
Approx. 3.0 liters (including reserve)
Safety Standards:
Meets relevant European safety standards for light motorcycles and scooters of its era.
Braking System Front:
Drum brake (typically 180mm or 190mm diameter)
Braking System Rear:
Drum brake (typically 150mm or 160mm diameter)
Lighting System:
Headlight, taillight, brake light, turn signals, license plate light.
Frame Construction:
Pressed steel monocoque frame
Engine Oil Change Interval:
Every 2,000-3,000 km or annually (for reduction gear oil), or as specified by manual. Engine lubrication is via fuel-oil mix.
Spark Plug Replacement Interval:
Every 5,000-8,000 km (depending on usage and plug type)
Air Filter Cleaning Interval:
Every 1,000-2,000 km or as needed based on operating environment
Brake Adjustment Interval:
As needed, check for proper lever free play
Transmission Gear Oil Spec:
SAE 30 or SAE 80/90 gear oil (consult manual for exact viscosity and API service classification)
2 Stroke Oil Mix Ratio:
1:50 or 1:40 (2% or 2.5%) using high-quality 2-stroke scooter oil
Common Wear Items:
Clutch springs, variator rollers, drive belt (CVT), spark plugs, brake shoes, suspension bushings.
Electrical Gremlins:
Wiring harness degradation over time, stator coil issues, headlight switch failures.
Carburetor Tuning:
Carburetors can become clogged or out of adjustment, requiring cleaning and proper tuning for optimal performance.
Automatic Transmission Wear:
CVT components like the variator and clutch can wear over time, affecting acceleration and top speed.
Brand Origin:
Piaggio is an Italian manufacturer with a rich history in scooter production, particularly known for the iconic Vespa brand.
Pk Series Introduction:
The PK series was introduced in the early 1980s as a successor to the popular V50 and Primavera models, featuring a more modern design and updated mechanicals, including the option of automatic transmission.
Production Period:
The PK series was produced from approximately 1982 to 1990, with various engine sizes and transmission options.
Manufacturing Location:
Primarily manufactured in Italy.
