Other features include: Preselector time control for auto cycling;Roll slide positive stop;and Automatic lubrication.
自动旋转时间预选控制, 辊子滑动前挡板, 以及自动润滑。
英语百科
Automatic lubrication
Automatic lubrication (also called autolube or auto-lube) refers to a lubrication system on a two-stroke engine, in which the oil is automatically mixed with fuel and manual oil-fuel pre-mixing is not necessary. The oil is contained in a reservoir that connects to a small oil pump in the engine, which needs to be periodically refilled.