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Model W1781 21˚ Framing Nailer
-15-
Troubleshooting
Symptom Possible Cause Cause Possible Solution
Air leaking at trig-
ger valve area.
1. O-rings in trigger valve
housing are damaged.
1. O-rings must be replaced
& operation of safety nose
must be checked.
Air leaking
between housing
and hose
1. Loose screws in housing.
2. Damaged O-ring.
3. Loose air fitting.
1. Reseal and tighten screws.
2. Replace O-ring.
3. Tighten air fitting & use
teflon tape.
Air leaking
between housing
and cap.
1. Damaged seal. 1. Replace damaged seals.
Tool skips nails
while discharging.
1. Excessive air pressure.
2. Air leaks.
3. Dirt in nose.
4. Dirt or damage prevents nails
from moving freely.
5. Inadequate air flow to tool.
6. Worn piston O-ring or lack of
lubrication.
7. Damaged trigger valve O-
rings.
8. Worn bumper.
9. Cap seal leaking.
1. Reduce air pressure to
tool.
2. Reseal and tighten screws
and fittings.
3. Clean nose.
4. Clean magazine and
inspect/repair damage.
5. Check fittings, hose,
compressor, and air
pressure.
6. Replace O-ring and
lubricate.
7. Replace trigger valve O-
rings.
8. Replace bumper.
9. Replace cap seal.
Tool runs slowly
or has a loss of
power.
1. Undersized air hose.
2. Nailer is not lubricated.
3. Broken spring in cap
assembly.
4. Exhaust port in cap is
blocked.
1. Use a larger hose.
2. Lubricate nailer.
3. Replace spring.
4. Clean or replace damaged
internal parts.
Fasteners frequent
-
ly jam the nailer.
1. Nails are the wrong size.
2. Nails are bent or dirty.
3. Magazine or nose screws are
loose.
4. Driver or driver guide are
worn or damaged.
5. Nails are wrong angle.
1. Use correct nails.
2. Use undamaged, clean
nails.
3. Tighten magazine.
4. Replace worn or damaged
parts.
5. Use correct angle nails.
Nailer does not
fire.
1. Nailer is not lubricated.
2. Nail is jammed in magazine or
discharge area.
3. Piston shaft is damaged.
4. Air pressure too low.
1. Follow lubricating
instructions.
2. Clear nailer magazine or
discharge area.
3. Replace piston shaft.
4. Check/increase air
pressure.