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Maintenance chart
ACTION WHY HOW
Clean magazine and feeder Prevent a jam. Blow clean daily.
mechanism.
Keep push lever working properly. Promote operator safety and Blow clean daily.
efficient Nailer operation.
Operator troubleshooting
PROBLEM
Nailer operates, but no nail is
driven.
Skipping nails.
Intermittent feed.
Nails jam.
Driven nail is bent.
The operation of the push lever
not smooth.
Fan is working, light indicator
shows GREEN yet it doesn’t drive
a nail or operation unstable.
Fan does not operate when push
lever is pressed.
Unable to charge battery.
CHECK METHOD CORRECTION
Check for a jam. Clear a jam.
Check function of nail feeder. Clean and lubricate.
Ribbon spring weakened or damaged?
Replace ribbon spring.
Check for proper nails. Use only recommended nails.
Check if the driver blade piston is
Push the driver blade with a slotted-
down
or not.
head slotted-head screwdriver, and
put back the piston to the highest
position.
Check for proper nails. Use only recommended nails.
Check function of nail feeder. Clean and lubricate.
Ribbon spring weakened or damaged?
Replace ribbon spring.
Nail feeder (B) worn or damaged? Replace nail feeder (B).
Check for returning of piston. Pull the trigger all the way.
Too low temperature, warm up
fuel cell under 50°C (120°F).
Check for moving of piston smoothly.
Contact Hitachi for replacement.
Replace piston ring.
Replace piston.
Replace cylinder o-ring.
Check for proper nails. Use only recommended nails.
Driver blade worn? Contact Hitachi for replacement.
Nail feeder (B) worn or damaged? Replace nail feeder (B).
Push lever bent? Contact Hitachi for replacement.
Check push lever’s moving track, Contact Hitachi for replacement.
debris?
Check for returning of piston. Pull the trigger all the way.
Too low temperature, warm up
fuel cell under 50°C (120°F).
Check fuel cell, insufficient? Exchange it with a new fuel cell.
Check spark plug wire, worn out? Contact Hitachi for replacement.
Check spark plug, grease or debris?
Contact Hitachi for replacement.
Check filter, clogged? Contact Hitachi for replacement.
Magazine empty. Load more nails in the magazine.
Note the color of the light indicator.
If red: charge the battery.
If green: Contact Hitachi for replacement.
Check the electrical cord.
01Eng_NR90GC2_WE_7L 4/14/08, 8:11 PM14
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