TROUBLESHOOTING
9
PROBLEM
CAUSE
SOLUTION
Air leak at trigger area
O-ring in trigger valve
damaged or cracked
Check and replace O-ring
Trigger valve head damaged
Check and replace trigger valve head
Trigger valve stem, seal, or
O-ring damaged
Check and replace trigger valve stem
Air leak between body and
front plate
Piston O-ring or bumper
damaged
Check and replace O-ring or bumper
Air leak between body and
cylinder cap
Screw loose
Tighten screws
Damaged seal
Check and replace seal
Tool driving fasteners too
deeply
Worn bumper
Replace bumper
Air pressure too high
Adjust air pressure at regulator
Tool runs slowly or has power
loss
Insufficient lubrication
Add oil as instructed
Insufficient air supply
Check air supply
Broken spring in cylinder cap
Replace spring
Exhaust port in cylinder head
is blocked
Replace damaged internal parts
Tool skips fasteners
Worn bumper or damaged
spring
Replace bumper or pusher spring
Dirt in front plate
Clean drive channel in front plate
Inadequate airflow to tool
Check hose and compressor fittings
Worn or dry O-ring on piston
Replace or lubricate O-ring
Damaged O-ring on trigger
valve
Replace O-ring
Cylinder cap is leaking
Replace seal
Fasteners jam in tool or in
magazine
Joint guide is worn
Replace joint guide
Fasteners in tool are the
wrong size or damaged
Use only recommended fasteners
Magazine screws or front
plate clamp are loose
Tighten all
Blade in piston assembly is
damaged
Replace piston assembly
Tool will not drive fasteners
down tight
Worn blade in piston
assembly
Replace piston assembly
Lack of power
Adjust regulator to adequate pressure
Slow cycling and loss of
power
Check cylinder cap spring for broken coils, reduced
length, or if exhaust port is blocked
