17Operating Instructions and Parts Manualwww.chpower.comTroubleshooting GuideStop using nailer immediately if any of the following problems occur. Serious personal injury could result.Any repairs or replacements must be done by a Qualified Service Person or Authorized Service Center.SYMPTOM CAUSe SOLUTIONAir leaking at trigger valve O-rings in trigger valve housing aredamagedReplace O-rings. Check operation of Work ContactElement (WCE)Air leaking between housingand nose1. Damaged O-rings and / or seals 1. Replace O-rings and / or seals2. Damage to bumper 2. Replace bumperAir leaking between housingand cap1. Loose screws 1. Tighten screws2. Damaged gasket 2. Replace gasketNailer skips driving nail 1. Worn bumper 1. Replace bumper2. Dirt in nose piece 2. Clean drive channel3. Dirt or damage prevent nails orpusher from moving freely inmagazine3. Clean magazine4. Damaged pusher spring 4. Replace spring5. Inadequate air flow to nailer 5. Check fitting, hose, or compressor6. Worn O-ring on piston or lack oflubrication6. Replace piston seals7. Damaged O-ring on trigger valve 7. Replace O-rings8. Air leaks 8. Tighten screws and fitingsNailer runs slow or has loss ofpower1. Nailer not lubricated sufficiently 1. Lubricate nailer2. Broken spring in cylinder cap 2. Replace spring3. Exhaust port in cap is blocked 3. Replace damaged internal partsNails are jammed in nailer 1. Guide on driver is worn 1. Replace guide2. Nails are not correct type 2. Use only recommended nails3. Nails are bent 3. Replace with undamaged nails4. Magazine or nose screws are loose 4. Tighten screws5. Driver is damaged 5. Replace driver6. Nails loaded incorrectly 6. Review Loading / Unloading section of manualLow nail indicators notworking1. System power switch in grip notdepressed1. Turn switch on2. Batteries need to be replaced 2. Replace batteries (see “Changing batteries”section)3. Components not properly replacedduring re-assembly after customermaintenance3. Review parts view for assistance in properre-assemblyCHN70900