Harbor Freight Tools 67450 Troubleshooting, Problem Possible Causes Likely Solutions

or worn, have the tool repaired by a qualified service technician.

3.Replace the coil of nails into the Roofing

Nailer. Close Canister Cover (89) and Catch (64) securely. Then reconnect air hose to the tool.

4.Test fire nailer into a piece of scrap wood repeatedly to test for proper operation. If nailer does not function properly, have tool serviced by a qualified 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 adequate 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 according to
		enough lubrication.		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. Jammed fastener.		1.	Clear jammed fastener according to Clearing Jams
without firing				instructions.
fastener.	2.	Tool empty.	2.	Fill with correct fasteners.
	3.	Incorrect fasteners used.	3.	Empty, then load with correct fasteners.
	4.	Magazine dirty or not	4.	Clean and lubricate magazine and pusher.
		lubricated properly.

5.Insufficient air flow.5. 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	1.	Incorrect fastener type.	1.	Confirm fastener diameter, type, length, angle, and
jamming.				collation type. Correct as needed.
	2.	Safety is stuck.	2.	Clean and lubricate with oil so safety moves freely
Severe air	1.	Cross-threaded housing	1.	Check for incorrect alignment and uneven gaps. If
leakage.		components.		cross-threaded, disassemble and replace damaged parts
(Slight air				before use.
leakage	2.	Loose housing.	2.	Tighten housing assembly. If housing cannot tighten
is normal,				properly, internal parts may be misaligned.
especially on			3.	Replace damaged components.
older tools.)	3.	Damaged valve or housing.
			4.	Clean or replace valve assembly.
	4.	Dirty, worn or damaged valve.

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

REV 10d
SKU 67450	For technical questions, please call 1-800-444-3353.	Page 17