Step 1
Remove all the bolts from the four corners.
Step 2
If it is difficult to remove it due to the heavily stuck internal seal packing, pry it open by inserting the tip of a flat-head screwdriver into the clearance between the exhaust nozzle and the upper housing.
Step 3
According to the photo, if the stick is too heavy, raise up the pump body and hit the exhaust nozzle lightly with a hammer. • Do not use a metal hammer.
