Craftsman 919.167551 owner manual Operation section

PROBLEM	CAUSE	CORRECTION
Pressure read-	It is normal for "some"	If there is an excessive
ing on the regu-	pressure drop to occur.	amount of pressure drop when
lated pressure		the accessory is used, adjust
gauge drops		the regulator following the
when an acces-		instructions in the Description
sory is used.		of Operation paragraph in the
		Operation section.
		NOTE: Adjust the regulated
		pressure under flow
		conditions (while accessory is
		being used).
Knocking Noise.	Possible defect in safety	Operate safety valve manually
	valve.	by pulling on ring. If valve still
		leaks, it should be replaced.
	Defective check valve.	Replace check valve.
Compressor is	Prolonged excessive use of	Decrease amount of air usage.
not supplying	air.
enough air
to operate
	Compressor is not large	Check the accessory air
accessories.
	enough for air requirement.	requirement. If it is higher than
		the SCFM or pressure sup-
		plied by your air	compressor,
		you need a	larger com-
		pressor.
	Hole in hose.	Check and replace if required.
	Check valve restricted.	Replace check valve.
	Air leaks.	Tighten fittings.
	Restricted air intake filter.	Clean or replace air intake
		filter. Do not operate the
		air compressor with the fil-
		ter removed. Refer to the
		Air Filter paragraph in the
		Maintenance section.
Regulator knob	Damaged regulator.	Replace.
has continuous
air leak.
Regulator will	Damaged regulator.	Replace.
not shut off air
outlet.

19-­ ENG