Just finished working on an old TDM850, which was running but cutting out when hot and would not restart until it cooled down.
Everything seemed ok and we both reckoned it was most likely tight clearances on the valves.
After an age stripping it to get at the valves, we discovered two of the six inlets were way out, one was .10mm and the other was 0.08mm whereas the mimimum clearance is 0.15mm.
Cam sprockets lined up and locked on to the chain with cables ties. Tensioner off, Cam spockets off, cam out and a few shim swaps later we were left with a 186 shim. My friend spent 30 min with wet and dry paper to bring a 186 shim down to 170. Put it in place, bucket and cam back in, cam sprockets on, timing checked tensioner back in. 4 rotations of the crank. and the two dodgy clearances back in the ,middle of the tolerances at 0.18mm
Put the kettle on and had tea, the rest can wait until tomorrow, hope that was the problem
We are still waiting for a TPS for the TDM900 to come, a freebie from Yamaha because it was part of the dodgy TPS recall which was never done.
Symptoms were erratic running at 3 to 4000 revs and cutting out intermittently. TPS tested and showed to going open circuit around 1/4 throttle which would correspond to 3 to 4000 revs
All in all a good evens work.
Arrived home to find a old Power washer in my driveway with a note, not working think its a dodgy switch, Paul.
Roll on tomorrow evening