Before starting the mixer, start the engine. At this time, the transmission should be in the neutral position, and the connection between the engine and the driving wheel should be disconnected to remove the engine load. After the engine has been started and the normal idle running has started, the transmission can be put into a certain gear to start the mixer.

　　搅拌车起步时，搅拌车是从完全静止的状态逐步加速的。如果传动系统（它联系着整个搅拌车）与发动机刚性地联系，则变速器一挂上挡，搅拌车将突然向前冲动一下，而使发动机熄火。这是因为汽车从静止到前冲时，产生很大的惯性力，对发动机造成很大的阻力矩。在这个惯性阻力矩的作用下，发动机在瞬间转速急剧下降到稳定转速（一般为300～500r/min）以下，发动机即熄火而不能工作，当然搅拌车也就不能起步。

　　When the mixer starts, it accelerates gradually from a completely static state. If the transmission system (which connects the whole mixer) is rigidly connected with the engine, the mixer will suddenly drive forward once the transmission is put into gear, and the engine will be shut down. This is because when the car moves from static to forward, it produces a great inertia force, which causes a great resistance moment to the engine. Under the action of this inertia resistance moment, the engine speed drops sharply below the lowest stable speed (generally 300-500r / min) in an instant, and the engine will shut down and not work, of course, the mixer will not start.

　　在传动系统中装设了离合器后，在发动机启动后，搅拌车启动之前，驾驶员先踩下离合器踏板，将离合器分离，使发动机与传动系统脱开，再将变速器挂上档，然后逐渐松开离合器踏板，使离合器逐渐接合。在离合器逐渐接合的过程中，发动机所受阻力矩也逐渐增加，故应同时逐渐踩下油门踏板，即逐步增加对发动机燃油供应量，使发动机的转速始终保持在稳定转速以上，不致熄火。由于离合器的接合紧密程度逐渐增大，发动机经传动系传给驱动车轮的转矩便逐渐地增加。到牵引力足以客服起步阻力时，搅拌车即从静止开始运动并逐步加速。因此保证了混凝土罐车能平稳起步。

　　After the clutch is installed in the transmission system, after the engine is started and before the mixer is started, the driver first depresses the clutch pedal, disengages the clutch, disengages the engine from the transmission system, puts the transmission into gear, and then gradually releases the clutch pedal to gradually engage the clutch. In the process of gradual engagement of the clutch, the blocked torque of the engine is also gradually increased, so the accelerator pedal should be gradually depressed at the same time, that is, the fuel supply to the engine should be gradually increased, so that the engine speed will always be kept above the minimum stable speed, without stalling. Due to the increase of clutch engagement, the torque transmitted by the engine to the driving wheel through the transmission system will gradually increase. When the traction force is enough to overcome the starting resistance, the mixer starts to move from static and accelerates gradually. Therefore, the concrete tank truck can start smoothly.