Repair instructions when the clutch of your BMW F650 + ST slips
F650 Funduro + Strada models
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Here you can find out what could be the reason if the clutch of your motorcycle slips and how you can repair it yourself quickly and easily with which spare parts:
If the engine starts to howl and gets torque but no power comes, the problem is usually that the clutch will not work anymore. This can have different causes:
The clutch cables between the clutch lever and the release lever are not sufficiently tensioned
The clutch plates are worn
The clutch springs no longer bring the necessary tension.
Below we explain how to repair your clutch yourself. This article will be written gradually and refined with details.
2.1. If the clutch cable is the problem:
If the clutch cable is the problem, you can usually use the adjustment options on the clutch handle mount to adjust the cable to the perfect coupling point. To do this, turn the adjusting wheel on the mount until the coupling has a clearance of approx. 1-2 mm and then begins to couple. This requires a little tact. However, if the train is damaged or torn, it must be replaced. A fall can also cause the handle with the mount to warp, so that it has to be replaced.
All spare parts can be found used and new in our online shop.
2.2 When the clutch plates are worn:
The most common cause is when the clutch slips, the clutch plates are worn. These rub down minimally over time, until the spring tension is no longer sufficient to exert enough pressure on the slats, so that they grip firmly and transmit the power.
Then the slats of the coupling must be replaced. Usually a replacement of the springs also makes sense, as they can also wear out. Then you do not want to do the same work again for a few 1000km, this time swapping the springs.
2.2.1 Step 1: Order Spare Parts
You need a set of new clutch plates. A set of springs is also recommended. In addition, a new paper seal is required for the clutch cover in order to seal the engine again at the end.
2.2.2 step 2: repair
There are 2 ways to repair the clutch. The LEFT cover is fixed! If the next oil change is imminent, that's no problem. Simply use our detailed instructions for draining the engine oil.
But if the last oil change has only just happened, it can be easier to lay the motorcycle on its side so that the oil flows to the other side of the engine and you can do the work from above without having to remove the engine, or having to screw on the side of the motorcycle. The oil simply stays in the engine, which saves resources, time and money.
However, the following steps are important and must be observed:
1. Remove right mirror or at least release and fold in.
2. If necessary, dismantle the front of the cockpit / front panel to make sure that nothing happens.
3. Spread out blankets and cushions, whereupon your F650 can then be carefully put down (ideally at least 2.). Note: The handlebars will turn to the right because of the load distribution. This should not be prevented in order to achieve a stable bed.
4. Turn the fuel tap to OFF !!! Furthermore, the remaining fuel should now be drained from the float chambers of the carburetor, otherwise the gasoline will run out while lying down.
5. If the motorcycle is now on the right side and you have all the spare parts ready, you can start with the actual screwdriver work. : D
These steps can be skipped if the oil needs to be changed anyway and the oil has already been drained.
6. All Allen screws on the LEFT! Loosen and unscrew the clutch cover. It is best to choose a starting point and place the screws in a row.
7. Loosen the lid with a rubber mallet or a piece of wood between the lid and a normal hammer with light blows and then pull it off with a little force if necessary. To do this, a tool can be carefully placed on the retaining lugs of the lid when the lid is firmly in place.
Now the coupling is free with sight on the clutch basket:
8. Remove the remains of the seal between the motor body and the cover for a clean assembly later to ensure an absolute seal. Do not damage the sealing surfaces!
9. Unscrew the 10 nut screws (at least in the beginning, better not use a cross-slotted screwdriver, although this is also possible):
The screws hold the springs that you should also replace if necessary:
Remove the cover of the clutch basket and examine the inner release lever and the bearing inside for damage. This is what it has to look like if everything is okay:
10. Now the clutch plates are free in front of you in the clutch basket. Take these out. Pay attention to how these are sorted. There is always a coated slat followed by a bare steel slat, etc.
Below is a bare area, which is secured on some models with a wire. This remains installed. The wire is delicate and should not be damaged with a tip object when removing the remaining clutch plates.
11. Now replace the worn ones with the new ones. The alternating order is extremely important!
12. Put everything together in reverse order and tighten the 6-Kant bolts with your torque wrench.
These bolts are given a torque of: (CURRENTLY UNKNOWN) NM
13. Put on the new paper seal and make sure that the sealing surfaces are clean. Also pay attention to the paper seal, this can easily tear if the lid gets stuck somewhere. Then she is down and it has to be a new one. With feeling should be worked so here.
14. Mount the cover with its coupling shaft inside. Make sure that everything fits together well. Tighten the screws of the cover with your torque wrench evenly crosswise (always opposite one another). These screws of the cover only get 12NM. Yes, that is not very much, but it is correct because the engine expands at operating temperature.
15. Reinstall the release lever on the shaft of the cover and adjust it.
15. Position the motorcycle and start the engine. Check that everything is tight and that no oil is leaking anywhere on the lid.
Congratulations. Your clutch is repaired and ready for use again. Carefully start a small practice round before the next big ride.
If you have questions, suggestions or feedback, please write us an email to the address below in the footer.
The team of GlobalMotoParts wishes you a good trip at all times.Author: Paul Reimann
* This description is a guide based on personal experience. No liability is accepted.