... rail bottom.Basic structure:1, oscillating arm shaft, suites for rolling friction, reducing wear and prolong its service life.2, ... intra-articular injection of lubricating oil.2, cut rail machine run up to 500 hours, should remove cleaning spindle bearing, replace ... origin, come on want right amount, come on after rub-up machine surface residual gasoline.10, always check the engine lubricating oil ...