I've had clutch slip problems in my 08 515 too. I bought some clutch plates and some washers to preload the 3 larger springs. The new plates are exactly the same thickness as the old ones so I decided to try the washers first. The bike has motard wheels on and I took it up a mountain road...
I put a drz hotcam in my 08 gasgas. You can see some photos here. If you have any more questions just ask.
I have heard that the drz cam goes straight into the early GG400's. Somewhere along the line they made changes to the cam and head casting. If you're lucky the 02 head will be the same as...
This part is different to the one in later model bikes but it looks like it works on the same principle. It looks like the washer with the red arrow pointing to it has friction material on the back of it. There is one of these on the other side of the gear as well. Is the washer with the blue...
Now that's a seriously mangled sprag.
What model is your bike. That is an unusual sprag to have in there. I wonder if someone used that sprag as a replacement for the original one?
Embalmer, unless your sprag is severely worn I would put money on the torque limiter being the problem. As a reference point, HERE is a ducati sprag that was unable to start the engine. You will notice that the spring that holds the sprag together is completely destroyed. You can also see that...
That means yours is ok. They are not supposed to slip when you hit the starter. I think some of the parts that were designed for the drz400 engine have trouble coping with the 450 and 515 motors.
This is the answer in most cases. I went through all of this last year. I suspected the torque limiter from the start but I was told by mechanics that it would be the sprag. After spending money on parts and tools I wasn't happy the first time I hit the starter after doing the job only to hear...
What info does the technoresearch software give you about the sensors. If the temp sensor is faulty it could be too lean on cold startup. Does it start easier when it's hot? Try starting it with the temp sensor disconnected and see if it makes any difference.