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How to Replace the Gearbox Oil on the TM Racing 125?

Model: Tm Racing Tm Racing 125
Part: Transmission fluid

Video tutorial

To replace the gearbox oil on the TM Racing 125, loosen the drain plug bolt located at the front of the bike's oil reservoir. Once this is loosened, you can collect the used oil in a suitably positioned container; once the oil has completely drained, you can close the drain plug and top up the oil. This should be done by unscrewing the cap on top of the clutch cover and inserting a funnel inside; this way, you can pour in the necessary amount of oil.


Updated on 6 June 2026 by ScegliAuto


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by ScegliAuto

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