Take care of the original pully belt ageiging, if so please change a new belt and check the belt tightener !
安装时请检查原厂皮带老化情况，有问题请及时更换以后在使用，请检查皮带松紧力是否合适。
Take care of the original pully belt ageiging, if so please change a new belt and check the belt tightener !
安装时请检查原厂皮带老化情况，有问题请及时更换以后在使用，请检查皮带松紧力是否合适。
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