TM RACING TM 2 stroke 125 User Manual (English)

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.

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