I would also say bad battery but after 3. I believe it might be the starter. You can measure the amp draw from the starter, which will tell you if the starter is kaput!
i should have explained better! I mentioned the sprag because it went on my bike (a 996) about fore weeks ago,My 1098S had a bad sprag clutch, different symptoms all together.
The insufficiently heavy main battery cables on these were a known and common problem.
The wiring to earth and to the starter can’t handle the current flow, which makes the wiring get hot, and heat further reduces the ability of wiring to conduct current. A vicious cycle.
There are cable upgrade kits available, can’t remember the brand, but not hard to find on the net.
once you get the problem resolved, the bike has to be on a trickle charger when parked up or the anti theft system will sap the battery in just a few days.
Thanks I'll check that out too!i should have explained better! I mentioned the sprag because it went on my bike (a 996) about fore weeks ago,
The initial symptoms were poor starting, starter not turning over as well as it should, stalling at low rpm, basically the starter clutch was on its way out and as I found out was apparently biting when she did fire up!
Riding the bike and 9000 rpm being transferred back the the starter motor wore out the brushes on the starter pretty quick!
It’s worth a look (just to make sure) 👍👍