PLAINTIFFS:

Yamaha Tracer 9 >2021 owners group.

Organized in different social networks (WhatsApp, Telegram, Facebook, RocKr, Twitter, Instagram, Youtube).

Email: tracer9owners@proton.me

DEFENDANT:

Yamaha Motor Global

https://global.yamaha-motor.com/link/

REASONS:

That from the ECU update campaign published by the manufacturer in March 2022 and updated in official workshops, the motorcycle presents a different behavior in engine retention below 3.000 rpm affecting riding safety.

That after multiple complaints by email and phone to the manufacturer, no solution has been offered.

CAUSES:

1º In deceleration without squeezing the clutch or changing gear, letting it retain by the own inertia of the engine brake, a jump and change of retention force is perceived when going below 3.000 rpm, causing the bike to behave differently and clutch as if it were in neutral or you had squeezed the clutch (when it is not). This means that you have to apply disc brakes from 3.000 rpm to maintain the same deceleration speed expected from the engine brake.

2º When you are descending a mountain pass road the situation is aggravated by its very nature, which has an impact on riding safety when you approach a curve decelerating with engine brake and just at the apex of it when you are at the angle of greatest inclination letting the bike run, you go below 3.000 rpm causing the bike to "accelerate even if you do not give gas", and forcing you either to lean more to correct that the bike itself tends to lift by the increased speed, or to touch disc brakes with the danger of doing this in a curve, causing the bike to lift and even if you get scared to make a straight putting at risk your safety and that of other drivers who share the road. If we add to this a wet or rainy asphalt that makes the riding feel has a greater impact on the behavior, it can be a major scare or even end in tragedy, being one more factor to add to the many that can occur for an accident to occur.

3º That due to this behavior, you have to pay more attention to the instrument panel to be aware of reducing or applying disc brakes before descending from 3.000 rpm.

REQUEST AND EXPECTED SOLUTION:

Considering that this behavior is not normal within any engine in general, and that it has changed the behavior from the original factory motorcycle to the one received at the time of purchase, we request the urgent correction of the anomaly by updating the ECU again and a compensation to the customers.