Hitachi Koki USA NR 90GC - Manual (Page 21)

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English
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 per Clean and lubricate.
page 19.
Ribbon spring weakened or damaged? Replace ribbon spring.
Check for proper nails. Use only recommended nails.
Check for proper nails. Use only recommended nails.
Check function of nail feeder per Clean and lubricate.
page 19.
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 120°F (50°C).
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, debris? Contact Hitachi for replacement.
Check for returning of piston. Pull the trigger all the way.
Too low temperature, warm up fuel cell
under 120°F (50°C).
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.