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troubleshooting
problem
air leaking from stapler
body assembly joint.
air leaking between hous-
ing and hose.
tool skips staples while
discharging.
tool fires slowly or has a
loss of power.
Fasteners frequently jam
the stapler.
stapler does not fire.
-12
-
cause
1. Fasteners loose.
2. Worn/damaged o-rings or
gaskets.
1. loose air fitting.
2. loose screws in housing.
3. damaged o-ring.
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. air pressure low
2. stapler is not sufficiently lubri-
cated.
3. Broken spring in cap assem-
bly.
4. exhaust port blocked.
5. Buildup on nose/driver assy.
1. staples are the wrong size.
2. staples are wrong angle.
3. staples are bent/damaged.
4. Magazine or nose screws are
loose.
5. driver or driver guide is worn
or damaged.
1. air pressure too low.
2. staple is jammed in mag-
azine or discharge area.
3. piston shaft is damaged.
4. stuck head valve
action
1. tighten.
2. replace.
1. tighten air fitting.
2. tighten screws.
3. replace o-ring.
1. tighten screws and fit-
tings.
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.
1. increase pressure.
2. lubricate stapler.
3. replace spring.
4. Clean or replace dam-
aged internal parts.
5. Clean.
1. use correct staples.
2. use correct angle.
3. use undamaged staples.
4. tighten magazine and
nose screws.
5. replace worn or dam-
aged parts.
1. increase air pressure.
2. Clear stapler magazine
or discharge area.
3. replace piston shaft.
4. disassemble and lubri-
cate.
Model h5977 (Mfg. since 2/07)
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