Engine losing power while practising
Hey all,
I am teaching someone the basics of riding on a 1999 Yamaha tdm 850. (2 cilinders with carburetors, watercooled with working fan)
So riding the clutch in a flat parking lot, only slow speeds (no throttle).
After some time, the idle drops a little (from 1050rpm nominal to around 900-950rpm) and the bike stalls when letting of the clutch. Not stalling when using the throttle. Anyone know a reason for this?
The fan works and kicks on, not a warm day (15°C), not on a hill, brakes are not dragging.
Is the engine overheating?
Thanks for the help!