Graco Mark IV, 795 What To Check, What To Do, Type Of Problem, If check is OK, go to next check

Troubleshooting

	WHAT TO CHECK	WHAT TO DO
TYPE OF PROBLEM	If check is OK, go to next check	When check is not OK, refer to this column
Pump is difficult to prime	Air in pump or hose	Check and tighten all fluid connections. Cycle
		pump as slowly as possible during priming.
	Intake valve is leaking	Clean intake valve. Be sure ball seat is not
		nicked or worn and that ball seats well. Reas-
		semble valve.
	Pump packings are worn	Replace pump packings; see pump manual.
	Paint is too thick	Thin the paint according to supplier recommen-
		dations.
No display, sprayer	Display is damaged or has bad con-	Check connections. Replace display.
operates	nection

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