My BMW R1150 GS would not start off the button and the starter motor would struggle to turn the engine over. Sometimes it was fine but other times it would struggle to the point that it would trigger the relay to click and the clock to reset. It always run off a bump start so figured it wasn't anything dodgy.
To just make sure it wasn't the battery or generator, I put a charger on overnight and tried starting the next day.... I knew this wasn't the issue but just wanted to rule it out. As you saw, the starter motor was still struggling to turn over.
I tried to clean the starter motor out but it made no difference so ordered a new starter motor and fitted it :-).
My Motovlog and on-the-go charging setup:
Helmet Gripper mount: https://amzn.to/3NdQ03F
Purple Panda Microphone: https://amzn.to/42EbSeo
GoPro Battery Charger Power Bank charges my Phone and GoPro batteries while when I'm riding the: https://amzn.to/440MeBE
Official GoPro Enduro Battery: https://amzn.to/43UBLYu
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#BMWGS #BMWR1150GS #adventuremotorcycling #motorcyclemaintenance #motorcyclerepair