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How do you disassemble the engine of the Derbi Senda 125?

Model: Derbi Senda 125
Part: Engine

Video tutorial

To disassemble the engine of the Derbi Senda 125, you need to loosen the screws that hold it to its housing in the center of the frame: once the fixing screws have been loosened, it will be possible to disconnect all the cables and remove the intake and exhaust manifolds.

This way, you can unscrew the valve cover screws, also removing the cylinder head and cylinder: at this point, it will be possible to detach the piston from the connecting rod, so that you can access the crankshaft and replace any necessary components.


Posted on 7 November 2025 by ScegliAuto


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How to replace the transmission oil in the KTM Exc 300

Today, let's discover how to carry out the routine maintenance service by replacing the transmission oil in the two-stroke enduro bike KTM Exc 300. First, place your bike on a stand and start by unscrewing the oil drain bolt located under the engine, allowing the gearbox oil to drain into a container for about ten minutes; then clean the small mesh oil filter, as shown in the video. At this point, unscrew the filler cap and top up with the new gearbox oil, the specifications of which are indicated in the owner's manual!

Watch the video!


by ScegliAuto

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