Graco Inc 233717 Problem, Cause, Solution, 309409, Use larger diameter hose and/or reduce overall

PROBLEM	CAUSE	SOLUTION
Pump output is low	Strainer (31) is clogged	Clean strainer. Sprayer 233716 strainer is for
		use in paint only.
	Piston ball (206) is not seating	Service piston ball. Manual 309277.
	Piston packings are worn or damaged	Replace packings. Manual 309277.
	O-ring (227) in pump is worn or damaged	Replace o-ring. Manual 309277.
	Intake valve ball is not seating properly	Clean intake valve. Manual 309277.
	Intake valve ball is packed with material	Clean intake valve. Manual 309277. Do not
		leave 233716 sprayer under pressure for more
		than 5 minutes when spraying texture and not
		actively spraying.
	Engine speed is too low	Increase throttle setting. Manual 309408.
	Clutch is worn or damaged	Replace clutch. Page 10.
	Pressure setting is too low	Increase pressure. Manual 309408.
	Fluid filter (318), tip filter or tip is clogged or	Clean filter. Manual 309408 or 309091.
	dirty
	Large pressure drop in hose with heavy	Use larger diameter hose and/or reduce overall
	materials	length of hose. Use of more than 100 ft of 1/4
		in. hose significantly reduces performance of
		sprayer. Use 3/8 in. hose for optimum perfor-
		mance (50 ft minimum).
Excessive paint leakage into	Throat packing nut is loose	Remove throat packing nut spacer. Tighten
throat packing nut		throat packing nut just enough to stop leakage.
	Throat packings are worn or damaged	Replace packings. Manual 309277.
	Displacement rod is worn or damaged	Replace rod. Manual 309277.
Fluid is spitting from gun	Air in pump or hose	Check and tighten all fluid connections.
		Reprime pump. Manual 309408.
	Tip is partially clogged	Clear tip. Manual 309091.
	Fluid supply is low or empty	Refill fluid supply. Prime pump. Manual
		309408. Check fluid supply often to prevent
		running pump dry.
Pump is difficult to prime	Air in pump or hose	Check and tighten all fluid connections.
		Reduce engine speed and 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. Manual 309277.
	Paint is too thick	Thin the paint according to the supplier’s
		recommendations
	Engine speed is too high	Decrease throttle setting before priming pump.
		Manual 309408.
Clutch squeaks each time	Clutch surfaces are not matched to each other	Clutch surfaces need to wear into each other.
clutch engages	when new and may cause noise	Noise will dissipate after a day of run time.
High engine speed at no	Misadjusted throttle setting	Reset throttle to 3700 engine rpm at no load
load
	Worn engine governor	Replace or service engine governor
Gallon counter not working	Bad sensor, broken or disconnected wire.	Check connections. Replace sensor or wire.
	Displaced or missing magnet.	Reposition or replace magnet.
No display, sprayer operates	Display damaged or has bad connection	Check connections. Replace display.

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