TM RACING TM 2 stroke 125

Questions and Answers

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Olivia ChanAug 8, 2025
Why TM RACING TM 2 stroke 125 Motorcycle engine overheats excessively?
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  Heather McclainAug 8, 2025
  If your TM RACING Motorcycle engine overheats excessively, it could be due to several reasons: * Insufficient coolant fluid. Top-up with coolant fluid and check for good sealing. * Insufficient ventilation. Ride with half throttle and not too slow to allow airflow through the radiators, you can also adopt an electric fan. * Air in the cooling system. Bleed the cooling system. * Dirty radiator fins. Clean the fins with a smooth water jet. * Foam in the cooling system. Change the coolant fluid with new one, using premium quality antifreeze. * Bent radiator hose. If possible, cut the hose a little shorter or replace it.
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jbeckAug 13, 2025
What to do if TM RACING Motorcycle engine misfires or backfires from the carburetor?
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  Elizabeth JenningsAug 14, 2025
  If your TM RACING Motorcycle engine is misfiring or backfiring from the carburetor, it could be due to: * Fuel missing: Clean and check the fuel circuit and the carburetor. * Air leaks in the intake manifold: Check the rubber manifolds between the filter case and the carburetor and between the carburetor and head, then tighten the clamps.
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Megan CoxAug 20, 2025
Why TM RACING TM 2 stroke 125 Motorcycle engine does not reach full speed?
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  gutierrezelijahAug 20, 2025
  If your TM RACING Motorcycle engine does not reach full speed, the possible causes are: * Fuel overflows because the level is adjusted too high or the float needle valve is dirty or worn. Disassemble the carburetor and check the height of the float and the state of the needle valve. * The carburetor jets are loose. Tighten the jets. * The ignition timing is not correct. Have the ignition timing checked.
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Austin RossAug 27, 2025
Why TM RACING TM 2 stroke 125 Motorcycle has poor engine power?
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  rodriguezkarenAug 27, 2025
  If your TM RACING Motorcycle experiences poor engine power, the causes and solutions include: * Partially interrupted fuel supply or dirty carburetor: Clean and check the fuel circuit and the carburetor. * Float not leakproof: Replace the float. * Air filter very dirty: Clean or replace the air filter, contact a specialised workshop. * Exhaust system not leakproof, deformed, or fiberglass in the silencer packing damaged: Check the faulty parts on the exhaust system, replace the fiberglass in the silencer. * Incorrect ignition timing: Have the ignition timing checked.
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michellemartinezAug 31, 2025
What to do if TM RACING TM 2 stroke 125 engine will not run at idle speed?
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  Stephanie GonzalezAug 31, 2025
  If the TM RACING Motorcycle engine will not run at idle speed, consider these potential causes: * Clogged idle speed jet: Disassemble the carburetor and clean the jet. * Altered idle speed adjustment screws: Adjust the idle speed screws. * Damaged spark plug: Replace the spark plug. * Faulty Ignition system: Have the ignition system checked.

Summary

IMPORTANT ADVICE

Warnings and Safety Precautions

Essential warnings for safe operation and general safety advice.

Legal and Warranty Information

Details on legal warranty terms, conditions, and manufacturer responsibilities.

SERIAL NUMBER IDENTIFICATION

Frame and Engine Number Locations

Guide to finding and recording the motorcycle's unique identification numbers.

OPERATING CONTROLS

Handlebar Controls and Instruments

Explanation of levers, switches, tachometers, and indicators.

Engine Start, Fuel, and Pedals

Procedures for starting, fuel systems, pedals, and stands.

Suspension Adjustments

Guide for adjusting fork and shock absorber settings.

COMMISSIONING AND USE

Initial Setup and Running-In

Recommendations for first start-up, break-in period, and initial riding.

Riding Instructions and Safety

Guidelines for safe operation, pre-ride checks, and riding techniques.

MAINTENANCE AND LUBRICATION

Service Schedules and Rider Checks

Overview of maintenance intervals and rider performed checks.

Frame and Engine Maintenance

Detailed tasks for steering, suspension, wheels, brakes, and engine components.

Electrical, Cooling, and Fuel Systems

Maintenance for battery, lighting, cooling, and fuel systems.

Clutch, Carburetor, and Transmission

Servicing clutch, carburetor, and transmission oil.

TROUBLESHOOTING

Engine Start and Running Issues

Solutions for engine not starting or running problems.

Performance and Other Problems

Troubleshooting for power loss, overheating, and electrical faults.

CARE AND STORAGE

Cleaning and Winter Protection

Guidelines for cleaning, winter storage, and anti-corrosion measures.

Storage Procedures

Instructions for storing the motorcycle when not in use.

TECHNICAL DATA AND SETTINGS

Engine Specifications and Torques

Detailed engine data, tightening torques, and specifications.

Cycle Part Data and Carburetor Settings

Chassis specs, suspension travel, and carburetor settings for models.

WIRING DIAGRAMS

Electrical System Schematics

Visual representation of the motorcycle's electrical circuits and connections.

TMEES SYSTEM DETAILS

Exhaust Valve Assembly and Adjustment

Step-by-step guide for assembling and adjusting the TMEES electronic exhaust system.

TM RACING TM 2 stroke 125 Specifications

General

Fuel System	Carburetor
Engine Type	2-stroke single cylinder
Bore x Stroke	54 mm x 54.5 mm
Power Output	40 hp
Transmission	6 speed
Cooling System	Liquid cooled
Front Brake	Hydraulic disc
Rear Brake	Hydraulic disc
Clutch	Wet multi-disc
Front Suspension Details	48 mm upside-down fork, adjustable