Because of the above Yamaha tried to remedy the affected bikes. The first was to fit a Yamaha US accessory oil cooler to the TX750 (a Lockheart cooler, I believe). A Dutch Company, KOVA, made the stays and oil pipes for us. These first modified TX750’s can be recognized by the oil pipes running over the cylinder head. Later-on Yamaha Japan made another set-up with chromed pipes low down.

I was in charge of the Logistics of all this and had to send all the modification parts to all our Yamaha Distributors. In these pre-email days everything went by Telex, so I handled kilometres of telex paper for this operation. Once the whole Operation got underway, we had mechanics working at major dealers to modify the motorcycles. When the initial shipments were modified, the next shipments were equipped with complete “fresh” engines, which incorporated all the modified parts.

We can say that this was the first major re-call in the Motorcycle Industry and Yamaha tried very hard to satisfy the customers. Please do not forget that for the “old industry”, the British, Italian and majority of German makes, problems were mostly ignored...!

So the final TX750’s had an enlarged crankcase sump, adjustable balancer chain, oil cooler, different gaskets, changed chain adjusters and literally hundreds of others small modifications.