Please be noticed:
1.If the machine vibrates violently, please add pad or towel under the compressor2, The compressor working, the cooling system can be working at the same time
3, The machine must be working with oil, so you must pay attention to the level of oil
4, If you need the video to know how to use, please just kindly contact me
5, Never start the machine before you have enough water prepared
6, If you have any question, please contact me
 

1, How many strokes the hand pump need to fill a cylinder to 4500psi?
-------As the 3 stage hand pump, it need 550 strokes to fill a 18.3 cu in (0.3L) tank to 4500psi

2, What is the different between 3 stage and 4 stage hand pump?
-------The 3-stage means 3 class compression, 4-stage means 4 class compression. 4-stage pump can much easy to fill a tank to 4500psi than 3-stage pump.

3, How long is the microbore hose?
-------There is a 50cm(20") hose with the pump.If you need buy a more longer hose, Please send a message to customer service.

4, Could you do custom assembly or offer OEM pcp hand pump product?
-------Sure, We are professional factory so We have a lot of experience in hand pump or electric pcp pump OEM Service