The pressure gauge needle
slowly after you pumping a
while; and it goes back when
water. See the bubbles to
It will rebound and feels
Something’s wrong with the
Replace the o-ring(NO.37or
35) in the piston 1 (NO.38).
valve and rotate the grip
top. Take out the pin in top
with the attached specifi ed
dismantling device. Visual
check if the piston seal is
completely intact. If there’s a
damage, replace the o-ring.
It feels very easy to pump
out of air tube is broken
and causes a leakage in the
Replace the O-ring(NO.13)
piston1(NO.38), Dismantle
connected to piston2(NO.2),
O-ring(NO.13) in the piston
and disable to pump to the
Something’s wrong with the
Change the 3rd-stage piston
seal(NO.29/30). Please do as
Q2 mentioned to dismantle
Piston 1(NO.38). Pull out
the 3rd-stage piston axis
directly(NO.31), the broken
above issue and it will be
solved by simply replacing
