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Derbi Dirtboy 10 User Manual

Derbi Dirtboy 10
48 pages
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MINIMOTO 50 C.C. 4T
WORKSHOP MANUAL
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Derbi Dirtboy 10 Specifications

General IconGeneral
BrandDerbi
ModelDirtboy 10
CategoryMotorcycle
LanguageEnglish

Summary

General Information and Safety

Safety Rules

Outlines critical safety precautions for engine operation, fuel handling, and proper tool usage.

Tightening Torques

Engine Assembly Torques

Specifies the correct torque values for various engine assembly fasteners, such as cylinder head and crankcase screws.

Scheduled Maintenance

Maintenance Chart

Outlines periodic maintenance actions and their corresponding service intervals for optimal performance.

Timing Phase and Valve Clearance Checks

Compression Pressure Testing

Clutch System Operations

Cylinder Head and Timing System

Cam Shaft Removal

Guides on removing the camshaft and its bearing, emphasizing replacement if separated.

Cylinder Head Removal

Details removing the cylinder head, dowel bolts, and gasket, with precautions for chain management.

Piston, Cylinder, and Valve Systems

Valve and Cylinder-Piston Assembly Removal

Covers removing valves, cylinder, piston, piston pin, and piston rings, with specific cautions.

Small End and Wrist Pin Inspection

Guides inspection of the small end and wrist pin for wear and proper dimensions.

Piston and Cylinder Measurements

Covers measuring piston/cylinder diameters, runout, and classification for mating.

Piston Ring Groove and Piston Protrusion Checks

Explains measuring piston protrusion and checking piston ring grooves.

Piston Ring Inspection

Details inserting rings and measuring their gaps, including mating play.

Cylinder Head and Timing System Inspection

Valve and Housing Inspection

Valve Inspection and Refitting

Cam Shaft Inspection and Refitting

Camshaft Pulley and Tensioner Adjustment

Crankcase and Crankshaft Operations

Crankcase Splitting and Bearing Refitting

Details splitting crankcase halves, removing components, and refitting crankshaft bearings.

Crankshaft Alignment Inspection

Measures crankshaft runout and checks related parts for anomalies.

Crankcase Halves Refitting and Joining

Guides refitting crankcase halves, installing bearings, oil pump, and joining cases.

Oil Pump System Operations

Carburettor System Operations

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