Does frequent stalling harm a manual transmission?

[DelSavannah]

There is almost no harm, and the impact is minimal. It's similar to an engine start-stop system, where the engine frequently shuts off and restarts. The only difference is that one is a normal shutdown, while the other is abnormal. There are a few minor, often overlooked effects. First, the engine experiences a certain degree of shock. Normally, it rotates smoothly, but when a sudden force stops it from rotating, the engine stalls instantly. Because this force is so abrupt, the crankshaft can suffer some impact. Second, after being forced to stall, there may be more unburned gasoline in the cylinders, which can lead to carbon buildup. However, the effects are minimal because the engine is restarted immediately, and the unburned fuel is consumed upon restart. Sometimes, restarting might be difficult due to an overly rich air-fuel mixture, but this can be resolved by gently pressing the accelerator while starting the engine.