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Skipping fasteners;
intermittent feed
Worn piston cushion Contact Hitachi for
replacement.
Tar/dirt in driver chan‑
nel
Contact Hitachi for
replacement.
Air restriction/inade‑
quate air flow through
quick disconnect
socket and plug
Replace quick discon‑
nect fittings
Worn piston O‑ring Contact Hitachi for
replacement.
Tool dry, lack of lubri‑
cation
Use Air Tool Lubricant
Damaged pusher
spring
Contact Hitachi for
replacement.
Low air pressure Check air supply
equipment
Loose magazine nose
screws
Tighten all screws
Fasteners too short
for tool
Use only recommend‑
ed fasteners
Bent fasteners Discontinue use of
these fasteners
Wrong size fasteners Use only recommend‑
ed fasteners
Broken/chipped driver Contact Hitachi for
replacement.
Dry/dirty magazine Clean / lubricate; Use
Air Tool Lubricant
Worn magazine Contact Hitachi for
replacement.
Fasteners jam in Tool Driver channel worn Contact Hitachi for
replacement.
Wrong size fasteners Use only recommend‑
ed fasteners
Bent fasteners Discontinue use of
these fasteners
Loose magazine nose
screws
Tighten all screws
Broken/chipped driver Contact Hitachi for
replacement.