[janelingling]

Used machine will always get these problems.
Pumps are consumable parts for the machine, just like printheads caps and wippers. Therefore the users have to replace them in a certain time.
Cause your machine is used, then you have to check its pumps that if it can work normally or not.
So now you said it seems not so powerful to work, I think that you have to buy a new one to replace it.

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