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1999 Aprilia 120-154 Leonardo 120S-154S Scarabeo Workshop Manual – PDF DOWNLOAD
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1999 Aprilia 120-154 Leonardo 120S-154S Scarabeo Workshop Manual – PDF DOWNLOAD
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Description
1999 Aprilia 120-154 Leonardo 120S-154S Scarabeo Workshop Manual – PDF DOWNLOAD
FILE DETAILS:
1999 Aprilia 120-154 Leonardo 120S-154S Scarabeo Workshop Manual – PDF DOWNLOAD
Language : English & Italian
Pages : 136
Downloadable : Yes
File Type : PDF
IMAGES PREVIEW OF THE MANUAL:
DESCRIPTION:
1999 Aprilia 120-154 Leonardo 120S-154S Scarabeo Workshop Manual – PDF DOWNLOAD
- This Workshop Manual contains essential information, data, and procedures necessary for servicing and repairing ROTAX type 120/154 engines. It is intended for use by professional mechanics who have been properly trained in the maintenance of these engines and have access to the required common and special tools for this work.
- If any procedure, data, or information in this manual is unclear, please contact Aprilia Service at the address or phone number provided below.
- The information in this Workshop Manual is current as of the date of publication. However, BOMBARDIER-ROTAX and Aprilia continuously improve their scooter engines and models, introducing ongoing updates. As a result, some of the information in this manual may not apply to the specific scooter you are servicing.
- To ensure you have the latest technical information from BOMBARDIER-ROTAX and Aprilia, please contact Aprilia Service. While this manual has been carefully compiled by the engineering and service departments of both companies, we cannot guarantee the absolute accuracy or applicability of all content.
- If you identify any errors or inconsistencies, we would greatly appreciate your feedback. Please direct any corrections or inquiries to the Aprilia Service Department at the contact details provided.
TABLE OF CONTENTS:
1999 Aprilia 120-154 Leonardo 120S-154S Scarabeo Workshop Manual – PDF DOWNLOAD
Foreword
- Important Information
General Information
- Recurrent Symbols
- General Precautions and Safety Rules
- Engine Serial Number – Position
- Technical Data
- Engine Servicing Schedule
- Servicing and Repair Requirements
- General Notes on Servicing and Repair Procedures
- Faultfinding
Tools and Equipment
- Service Tools, Equipment, Sealing and Lubricating Agents
- Standard Tools
- Measuring Instruments
- Fasteners
- Sealing and Lubricating Agents
- Torque Wrench Settings
Engine Removal and Dismantling
- Repairs Without Removing Engine
- Removing Engine from Frame
- Positioning Engine on Stand
- Dismantling the Engine
- Starter Motor — Remove
- Variator Cover — Remove
- Carburetor Hose and Valve Cover — Remove
- Locking Crankshaft at Top Dead Center
- Timing Chain — Check
- Chain Tensioner and Timing Gear — Remove
- Cylinder Head — Remove
- Chain Guide and Chain Tension Guide — Remove
- Cylinder — Remove
- Piston — Remove
- Oil Filter and Oil Pressure Switch — Remove
- Ignition and Electric Starter Gearing — Remove
- Oil Pump — Remove
- Water Pump — Remove
- Chain Tension Guide and Timing Chain — Remove
- Oil Strainer — Remove
- Variator — Remove
- Oil Pressure Valve
- Transmission — Remove
- Half Crankcase — Separate
- Crankshaft — Remove
Servicing Procedures
- Crankcase
- Half Crankcase, Flywheel Side (MS) — Flywheel Side Servicing
- Half Crankcase, Clutch Side — Removal and Refitting of Plain Bearings, Ball Bearings, Oil Seal, etc.
- Transmission Cover — Servicing
- Transmission
- Variator, Primary Drive Side — Check
- Secondary Drive
- Timing Gear
- Chain Guide and Chain Tension Guide
- Oil Pump and Water Pump Gearing
- Oil Pressure Retaining Valve
- Cylinder
- Piston and Piston Pin
- Piston Rings
- Cylinder Head
- Valves
- Valve Seats
- Rocker Arms
- Thermostat — Check (Leonardo 120 Only)
- Valve Cover
- Ignition
- Ignition Cover
- Electric Starter Gearing
- Idle Gear
- Starter Motor
Reassembling the Engine
- Half Crankcase, Flywheel Side
- Half Crankcase, Clutch Side
- Oil Strainer and Magnetic Drain Plug — Refit
- Piston — Refit
- Cylinder — Refit
- Chain Guide and Chain Tension Guide — Refit
- Cylinder Head — Refit
- Chain Tensioner — Refit
- Valve Clearance — Adjust
- Oil Filter — Refit
- Flywheel Side Components — Refit
- Water Pump, Idle Gear, and Ignition Cover — Refit
- Carburetor Hose — Refit
- Starter Motor — Install
- Variator Cover — Refit
- Refitting Engine onto Frame
- Engine Test
S.S 17/03/2025
