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In this tutorial, we will see how to replace the transmission oil in the SYM Joymax 250 scooter, a very simple and quick operation. First of all, let's make sure that the engine is cold enough. After that, we place a container underneath the transmission casing, locate the drain hole bolt, and unscrew it using a 10mm socket wrench. Next, we also unscrew the fill hole bolt with a 14mm wrench, allowing all the oil in the system to drain out, and then we tighten the lower bolt. At this point, all that’s left to do is to inject the necessary amount of oil using a syringe and tighten the upper bolt.

Posted on 4 December 2025 by ScegliAuto

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