Harbor Freight Tools 66902 Troubleshooting, Problem Possible Causes Likely Solutions

back to the engaged position. Use a screwdriver to release the jammed fastener by probing the openings in the magazine.

3.Pull out the jammed fastener and the remainder of the fastener strip that is still in the magazine. Dispose of the

remaining fastener strip; it may be bent or damaged in some other way.

4.If unable to clear jam using the meth- od prescribed above, the tool should be repaired by a qualified service technician.

Troubleshooting

Problem		Possible Causes		Likely Solutions
Insufficient	1.	Incorrect tool depth setting.	1.	Adjust depth setting, if available.
fastener depth.	2. Not enough air pressure.		2.	Check for loose connections and make
				sure that air supply is providing enough air
				pressure (PSI) to the tool’s air inlet. Do not
				exceed maximum air pressure.
	3.	Incorrect lubrication or not	3.	Lubricate using air tool oil and grease
		enough lubrication.		according to directions.
	4.	Blocked air inlet screen (if	4.	Clean air inlet screen of buildup.
		equipped).
	5.	Mechanism contaminated.	5.	Have qualified technician clean and lubricate
				mechanism. Install in-line filter in air supply
				as stated in Initial Set Up: Air Supply.
Fasteners drive	1.	Incorrect tool depth setting.	1.	Adjust depth setting, if available.
too deeply.	2. Too much air pressure.		2.	Reduce air supply pressure (PSI).
Tool cycles	1.	Tool empty.	1.	Fill with correct fastener.
without firing	2.	Incorrect fastener used.	2.	Empty, then fill with correct fastener.
fastener.	3.	Magazine dirty or not	3.	Clean and lubricate magazine and pusher.
		lubricated properly.

4.Insufficient air flow.4. Check for loose connections and make sure that air supply is providing enough air flow (CFM) and pressure (PSI) to the tool’s air inlet. Do not exceed maximum air pressure.

Frequent	Incorrect fastener type.		Confirm fastener diameter, type, length, angle,
jamming.			and collation type. Correct as needed.
Severe air	1.	Cross-threaded housing	1.	Check for incorrect alignment and uneven
leakage.		components.		gaps. If cross-threaded, disassemble and
(Slight air leakage				replace damaged parts before use.
is normal,	2.	Loose housing.	2.	Tighten housing assembly. If housing cannot
especially on				tighten properly, internal parts may be
older tools.)				misaligned.
	3.	Damaged valve or housing.	3.	Replace damaged components.
	4.	Dirty, worn or damaged valve.	4.	Clean or replace valve assembly.

Follow all safety precautions whenever diagnosing or servicing the tool. Disconnect air supply before service.

SKU 66902 For technical questions, please call 1-800-444-3353. Page 13