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Operating Instructions
Troubleshooting Chart
Stop using tool immediately if any of the following problems occur. Serious personal injury could occur.
Any repairs or replacements must be done by a Qualified Service Person or Authorized Service Center.
Symptom
Air leaking at trigger valve
area.
Air leaking between housing
and nose.
Air leaking between housing
and cap.
Tool skips driving fastener
Tool runs slow or has loss of
power
Fasteners are jammed in tool 1. Guide on driver is worn
Possible Cause(s)
O-rings in trigger valve housing are
damaged
1. Damaged o-rings
2. Damage to bumper
1. Loose screws
2. Damaged seal
1. Worn bumper
2. Dirt in nose piece
3. Dirt or damage prevent fasteners or
pusher from moving freely in magazine
4. Damaged pusher spring
5. Inadequate air flow to tool
6. Worn o-rings on piston or lack of
lubrication
7. Damaged o-rings on trigger valve
8. Air leaks
9. Cap seal leaking
1. Tool not lubricated sufficiently
2. Broken spring in cylinder cap
3. Exhaust port in cap is blocked
2. Fasteners are not correct size
3. Fasteners are bent
4. Magazine or nose screws are loose
5. Driver is damaged
CHG00289 (Model CHN20103)
Corrective Action
Replace o-rings
1. Replace o-rings
2. Replace bumper
1. Tighten screws
2. Replace seal
1. Replace bumper
2. Clean drive channel
3. Clean magazine
4. Replace spring
5. Check fitting, hose, or compressor
6. Replace and lubricate o-rings
7. Replace o-rings
8. Tighten screws and fittings
9. Replace seal
1. Lubricate nailer
2. Replace spring
3. Replace damaged internal parts
1. Replace guide
2. Use only recommended fasteners
3. Replace with undamaged fasteners
4. Tighten screws
5. Replace driver
7
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