Symptom Possible Cause(s) Corrective Action
O-Ring in trigger valve are damaged. Check and replace O-Ring
Trigger Valve head are damaged.
Check and replace trigger valve
head.
Trigger Valve stem, seal, or O-Ring are
damaged.
Check and replace trigger valve
stem, seal, or O-Ring
Air leaking between
body and drive guide
Damaged piston O-Ring or bumper Check and replace O-Ring or bumper
Screw Loose Tighten screws
Damaged Seal Check and replace seal
Worn bumper Replace bumper
Air pressure is too high Adjust air pressure
Insufficient oil Lubricate as instructed
insufficient air supply Check air supply
Broken spring in cylinder cap Replace spring
Exhaust port in cylinder cap is blocked Replace damaged internal parts
Worn bumper or damaged spring (57) Replace bumper or pusher spring
Dirt in front plate clean drive channel of front plate
Inadequate airflow to tool check hose and compressor fittings
Worn or dry O-Ring on piston Replace O-Ring or lubricate
Damaged O-Ring on trigger valve Replace O-Ring
Cylinder cap seal leaking Replace Seal
Joint guider is worn. Replace joint guider
Fasteners are wrong size or damaged
Use the recommended and
undamaged fasteners
Magazine or front plate screws are loose Tighten screws
Blade in piston assembly is damaged Replace piston assembly
Worn blade in piston assembly Replace piston assembly
Lack of power Adjust to adequate air pressure
Slow cycling and loss of power
Check cylinder cap spring for broken
coils or reduced length. Check if
exhaust port of cylinder cap is
restricted
Tool will not drive down
tight
Air leaking between
body and cylinder cap
Blade driving fastener
too deeply
Runs slowly or has
power loss
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