The clutch and steering are two mechanical devices that the driver steers. One has said that it tends to deteriorate faster than the other: it is the clutch system of course. Of course with the gearbox, in close connection. It happens rather regularly that gearshift problems occur on the + str (XXX) +. And even if the clutch is regularly involved, it sometimes happens that we are surprised at the source of the problems. In addition, this sometimes avoids changing the complete kit. Here are the gear change issues the most regular.
+ str (XXX) +: Impossible to pass one of the speeds
Sometimes one of the gears does not pass any more. Or just even or odd speeds. In this situation, the clutch is worn. However, this is not inevitably linked to the entire clutch kit or gearbox of your + str (XXX) +. It is possible that the problem stems from a link or from a rubber which holds it. The problem can also come from the gearbox. It is possible to remove it to check that no foreign component is blocking it. If the latter is damaged, it will have to be replaced.
Unable to change gear once the + str (XXX) + engine is started
Unfortunately, this is a fairly recurring problem. Since the engine block is off, it is still possible to shift your gears, this implies that the gearbox of your + str (XXX) + is operational. Once the engine block is running, it is impossible. The problem comes from the clutch. Usually it will be necessary to replace the complete clutch kit. You can try to remove it and check the condition of all the parts. For your information, it is advisable to replace the clutch every 150 km.
+ str (XXX) +: no speed passes
If none of the gears are working, the engine off as on, it's really unpleasant. One thing to check is the wear and tear on the gearbox of your + str (XXX) +. There is a good chance that it will be out of service. To discern where the problem comes from, it's quite simple. If you can push the lever into the guide of one of the gears, but the gear does not engage, the clutch is probably the problem. If the lever seems to be blocked and you cannot push it, the problem probably comes from the gearbox. For both, it will most likely have to replace one or more parts.