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H7678 18 Gauge Deep Stapler Kit
-15-
TROUBLESHOOTING
Symptom Possible Cause Solution
Air leaking at trig-
ger valve area.
1. O-rings in trigger valve hous-
ing are damaged.
1. O-rings must be replaced
& operation of safety yoke
must be checked.
Air leaking between
housing and hose.
1. Loose screws in housing.
2. Damaged O-ring.
3. Loose air fitting.
1. Tighten screws.
2. Replace O-ring.
3. Tighten air fitting & use tef
-
lon tape.
Air leaking between
housing and cap
assembly.
1. Damaged seal. 1. Replace damaged seals.
Tool skips staples
while discharging.
1. Air leaks.
2. Dirt in nose.
3. Dirt or damage prevents
staples from moving freely in
magazine.
4. Inadequate air flow to tool.
5. Worn O-ring on piston or lack
of lubrication.
6. Damaged O-rings on trigger
valve.
7. Worn bumper.
8. Cap seal leaking.
1. Tighten screws and fittings.
2. Clean nose.
3. Clean magazine and
inspect/repair damage.
4. Check fitting, hose, com
-
pressor & air pressure.
5. Replace piston O-ring.
Lubricate.
6. Replace trigger valve O-
rings.
7. Replace bumper.
8. Replace cap seal.
Tool runs slowly
or has a loss of
power.
1. Stapler is not sufficiently lubri
-
cated.
2. Broken spring in cap assem-
bly.
3. Exhaust port in cap is blocked.
1. Lubricate stapler.
2. Replace spring.
3. Clean or replace damaged
internal parts.
Fasteners frequent
-
ly jam the stapler.
1. Stapler is not sufficiently lubri-
cated.
2. Staples are the wrong size.
3. Staples are bent or dirty.
4. Magazine or nose screws are
loose.
5. Driver or driver guide are worn
or damaged.
1. Lubricate stapler.
2. Use correct staples.
3. Use undamaged, clean
staples.
4. Tighten magazine.
5. Replace worn or damaged
parts.
Stapler does not
fire.
1. Staple is jammed in magazine
or discharge area.
2. Piston shaft is damaged.
3. Air pressure too low.
1. Clear stapler magazine or
discharge area.
2. Replace piston shaft.
3. Check/increase air pres
-
sure.