TM RACING 250 EN Workshop Manual

TM RACING 250 EN Workshop Manual

2 stroke engine
Table of Contents

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Workshop Manual
2 STrOKE EnGInE
250-300
Mx - En - SMx
SMr - 2019
www.tmracing.it

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Table of Contents
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Summarization of Contents

Foreword
Coolant Liquid Safety
Safety precautions for handling coolant liquid.
Used Oil Handling
Safety precautions for handling used engine and gearbox oil.
Repair Advice
General recommendations for achieving excellent repair results.
General Repair Regulations
Essential regulations for performing motorcycle repairs.
Motorcycle Recognition
Identifying TM Models
Guide to identifying TM Racing motorcycle models based on codes.
Engine Serial Number
Locating and noting the engine serial number for identification.
Technical Specifications
Engine Technical Data 250-300 MX SMX
Technical specifications for 250-300 MX SMX engines.
Engine Data and Carburettor Settings
Engine Technical Data 250-300 EN-SMR
Technical specifications for 250-300 EN-SMR engines.
Carburettors Setting MX-SMX
Carburettor settings for MX-SMX models.
Torques and Lubrication
Engine Tightening Torques
Specifications for tightening engine component screws and nuts.
Lubrication
Recommended lubricants for various engine parts.
Maintenance
Maintenance Table
Scheduled maintenance tasks and intervals.
Troubleshooting
Engine Start/Stop Issues
Diagnosing and resolving engine starting or stopping problems.
Engine Noise Issues
Identifying and fixing sources of engine noise.
Clutch and Gearbox Issues
Troubleshooting problems related to gears and clutch engagement.
Troubleshooting (Continued)
Shift Control and Gear Disengagement
Resolving issues with gear shifting and disengagement.
Insufficient Power and Overheating
Diagnosing insufficient power and engine overheating.
Electric Part Issues
Troubleshooting problems with spark plug and starter motor.
Adjustments and Replacements
Engine Oil and Filter Change
Procedure for changing engine oil and filter.
Standard Clutch Replacement
Procedure for replacing the standard clutch.
Engine Disassembly
2.1 Engine Components Layout (MX-SMX)
Layout and identification of engine components for MX-SMX models.
2.8 Cylinder and Piston
Procedure for removing and replacing cylinder and piston.
2.10 Drain Valve Removal / Revision
Procedure for removing and revising the drain valve.
2.14 Flywheel Removal
Procedure for removing the flywheel and its components.
2.16 Water Pump
Procedure for water pump seal replacement and removal.
2.20 Transmission Side Counter Gears
Procedure for removing and reassembling transmission side counter gears.
2.23 Crankshaft, Gearbox, Gears Drum
Procedure for removing and reassembling crankshaft, gearbox, and gears.

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