When we want to purchase a second-hand excavator, must be measured from various aspects to avoid being fooled, the following teach you how to choose a second-hand excavator, how to judge the quality of the second-hand excavator: buy a second-hand mobile phone, it is best to take an experienced master together with the past site trial, through the trial will be able to understand the general situation of this excavator. 1. engine should pay attention to whether there is no exhaust oil, sound there is no burr, etc. 2. hydraulic to operate by virtue of the hydraulic pump sound judgement, there is no oil leakage of the multi-way valve, multi-way valve leakage is very difficult to get good.

Mini excavators first appeared in the mid-1980s, and today's machines have many more features that older models don't have, so we need to know in advance what features and components the machine we want to buy has.

Hydraulic control levers are better than the old joysticks, and pushplates sometimes don't come as standard; of course we may want to look for a machine with an articulated moving arm, which makes it easier to work close to buildings and 8 auxiliary pipework; and zero-tailed slewing is particularly important for builders who need to work in a compact environment.