User Manual
Operator troubleshooting
Most minor problems can be resolved quickly and easily using the table below.
If problems persist, contact a Hitachi authorized service center for assistance.
PROBLEM CHECK METHOD CORRECTION
Nailer operates, but no nail is driven. Check for a jam. Clear a jam page 17.
Nailer feeder damaged? Replace nail feeder.
Pushing spring weakend or
damaged?
Replace pushing spring.
Check for proper nails. Use only recommended nails.
Weak drive.
Slow to cycle.
Check air pressure. Increase air pressure.
(Do not exceed 100 psi (6.9 bar 7
kgf/cm
2
))
Check position of nailing depth
adjuster.
Readjust per page 15.
———
Use Hitachi pneumatic tool lubricant.
Driver blade worn? Contact Hitachi for replacement.
Piston O-ring worm or damaged?
Drives too deep. Check air pressure. Reduce air pressure.
(Adjust 64 – 100 psi
(4.4 – 6.9 bar 4.5 – 7 kgf/cm
2
))
Check position of nailing depth
adjuster.
Readjust per page 15.
Skipping nails
Intermittent feed.
Check for proper nails. Use only recommended nails.
Nailer feeder damaged? Replace nail feeder.
Pushing spring weakend or
damaged?
Replace pushing spring.
Piston O-ring worn or damaged? Contact Hitachi for replacement.
Nails jam.
Driven nail is bent.
Check for proper nails. Use only recommended nails.
Driven blade worn? Contact Hitachi for replacement.
Drives properly during normal
operation, but does not drive fully at
faster nailing speeds.
Check inside diameter of air hose. Use larger air hose.
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