Hitachi GMAX II 3900 - Manual (Page 18)

Displacement Pump
18 310893L
4. F IG . 26. Close pump door and rotate latch into position.
Do not tighten latch.
5. F IG . 26. Rotate pump to align with material hose. Connect
material hose and hand tighten to 70 in-lb
F IG . 26
6. F IG . 27. Tighten latch and rotate latch lock into locked position.
F IG . 27
7. F IG . 28. Attach drain hose to sprayer.
F IG . 28
8. F IG . 29. Fill pump with Graco TSL until fluid flows onto top
of seal.
F IG . 29