Troubleshooting

Model W1777 21⁄2" 16 Gauge Finish Nailer

Symptom

Possible Cause

Possible Solution

Air leaking at	1.	O-rings in trigger valve	1.	O-rings must be replaced
trigger valve area.		housing are damaged.		& operation of safety nose
				must be checked.
Air leaking between	1. Loose screws in housing.		1. Tighten screws.
housing and hose	2. Damaged O-ring.		2. Replace O-ring
	3.	Loose air fitting.	3.	Tighten air fitting & use
				teflon tape.
Air leaking between	1. Damaged seal.		1. Replace damaged seals.
housing and cap.
Tool skips nails	1.	Excessive air pressure.	1.	Reduce air pressure to tool.
while discharging.	2.	Air leaks.	2.	Tighten screws and fittings.
	3. Dirt in nose.		3.	Clean nose.
	4. Dirt or damage prevents nails		4. Clean magazine and
		from moving freely.		inspect/repair damage.
	5.	Inadequate air flow to tool.	5.	Check fittings, hose,
				compressor, and air
				pressure.
	6. Worn piston O-ring or lack of		6. Replace O-ring and
		lubrication.		lubricate.
	7. Damaged trigger valve O-rings.		7. Replace trigger valve O-
				rings.
	8. Worn bumper.		8. Replace bumper.
	9. Cap seal leaking.		9. Replace cap seal.
Tool runs slowly or	1. Undersized air hose.		1. Use a larger hose.
has a loss of power.	2.	Nailer is not lubricated.	2.	Lubricate nailer.
	3. Broken spring in cap assembly.		3. Replace spring.
	4. Exhaust port in cap is blocked.		4. Clean or replace damaged
				internal parts.
Fasteners	1.	Nails are the wrong size.	1.	Use correct nails.
frequently jam the	2. Nails are bent or dirty.		2. Use undamaged, clean
nailer.				nails.
	3. Magazine or nose screws are		3. Tighten magazine.
		loose.
	4. Driver or driver guide are		4. Replace worn or damaged
		worn or damaged.		parts.
	5.	Nails are wrong angle.	5.	Use correct angle nails.
Nailer does not	1.	Nailer is not lubricated.	1.	Follow lubricating
fire.				instructions.
	2. Nail is jammed in magazine or		2. Clear nailer magazine or
		discharge area.		discharge area.
	3. Piston shaft is damaged.		3. Replace piston shaft.
	4. Air pressure too low.		4. Check/increase air
				pressure.
Air blows out of	1.	O-ring slipped out of groove or	1. Reinstall/replace suspect
exhaust cap; nailer		damaged inside nailer.		O-ring; turn down air
will not fire.				pressure.
		-15-