enigne cuts out.
 

gday Kev and all I need a little help my 99 xtz 660 tenere cuts out after 10 mins and will not start till its cool again ive replaced the battery and fuel It just starts and runs fine and then coughs and splatters and stops it got me stumped all help would be apreaiced.I would all so like to know who in Brisbane works on older Yamaha xtzs .peace

Don't know of anyone who will work on your bike, have you tried replacing the spark plugs, cleaning out the carbs, is the air filter blocked.

Old ignition coils can be prone to breakdown or open circuit when they get hot. Had this problem a few times, once on my old 3YF, but particularly on British bikes and I've found Rover V8s are prone to it too.

Check the spark cold, and after it has cut out, on a hot engine and compare. Better still check the resistance on a cold and hot coil, or find another to substitute. In fact check all the HT side of the ignition while you're at it.

Also, another thing is I just remembered, I had an NX650 that showed similar issues, and that turned out to be the crankshaft pulse generator failing as the engine got hot. Heat can do funny things to electrics, especially cause increased resistance.