CMPPN23 - Stapler Craftsman - Free user manual and instructions

USER MANUAL CMPPN23 Craftsman

Air Inlet with quick connect coupler

Low nail indicator window

English is used, the tool can remain charged with air after disconnecting and thus will be able to drive a fastener even after the air line is disconnected possibly causinginjury.

• Do not pull the trigger while connected to the air supply as the tool may cycle, possibly causinginjury.

• Always disconnect air supply: 1.) Before making adjustments; 2.) When servicing the tool; 3.) When clearing a jam; 4.) When tool is not in use; 5.) When moving to a different work area, as accidental actuation may occur, possibly causinginjury.

WARNING: When loading tool:

• Never place a hand or any part of body in fastener discharge area oftool.

• Never point tool at yourself or anyoneelse.

• Do not pull the triggers as accidental actuation may occur, possibly causinginjury.

• Be careful when handling fasteners, especially when loading and unloading, as the fasteners have sharppoints.

WARNING: Do not operate tool if:

• There is any damage to air hose or fitting.

• The tool has received a sharp blow, malfunctions or is dropped or damaged in any manner. Return tool to the nearest authorized service facility for examination, repair, or mechanicaladjustment.

• Warning labels are missing ordamaged.

• Tool is not in proper working order. Tags and physical segregation shall be used forcontrol.

• Tool is without workpiece contact. A tool without workpiece contact can be fired unintentionally causing injury to an operator or a bystander.

WARNING: When operating the tool:

• Always handle the tool with care: - Never engage inhorseplay. - Never pull the trigger unless nose is directed toward thework. - Never point the tool at yourself orothers. - Keep others a safe distance from the tool while tool is in operation as accidental actuation may occur, possibly causinginjury. - Keep bystanders and children away while operatingtool. - Respect tool as a workingimplement. - Stay alert, focus on your work and use common sense when working withtools. - Do not use tool while tired, after having consumed drugs or alcohol, or while under the influence ofmedication. - Do not overreach. Only use in a safe workingplace. - Keep proper footing at alltimes.

• When working close to an edge of a workpiece or at steep angles use care to minimize chipping,

WARNING: Only persons who have read and

understand the tool operating/safety instructions should operate thetool.

WARNING: Actuating tool may result in flying debris,

collation material, or dust which could harm operator’s eyes. Operator and others in work area MUST wear safety glasses with side shields. These safety glasses must conform to ANSI Z87.1 requirements (approved glasses have “Z87” printed or stamped on them). Employer is responsible for enforcing the usage of eye protection equipment by the tool operator and all other personnel in the workarea.

WARNING: Always assume that the tool

WARNING: (Air and Supply)

• Do not use oxygen, combustible gases, or bottled gases as a power source for this tool as tool may explode, possibly causinginjury.

• Do not use supply sources which can potentially exceed 200p.s.i.g. (14kg/cm

) as tool may burst, possibly causinginjury.

• The connector on the tool must not hold pressure when air supply is disconnected. If a wrong fitting Definitions: Safety Alert Symbols andWords This instruction manual uses the following safety alert symbols and words to alert you to hazardous situations and your risk of personal injury or propertydamage.

DANGER: Indicates an imminently hazardous

situation which, if not avoided, will result in death or seriousinjury.

WARNING: Indicates a potentially hazardous situation

which, if not avoided, could result in death or seriousinjury.

CAUTION: Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderateinjury.

(Used without word) Indicates a safety relatedmessage. NOTICE: Indicates a practice not related to personal injury which, if not avoided, may result in propertydamage. Intended Use Your nailer is designed for professional fasteningapplications. DO nOT use under wet conditions or in presence of flammable liquids orgases. Your nailer is a professional powertool. DO nOT let children come into contact with the tool. Supervision is required when inexperienced operators use thistool. English (original instructions)

WARNING: Read all safety warnings and all

instructions. Failure to follow the warnings and instructions may result in electric shock, fire and/or seriousinjury.

WARNING: To reduce the risk of injury, read the

• When using the sequential action trigger, do not actuate the tool unless the tool is placed firmly against theworkpiece.

WARNING: DEPTH ADJUSTMENT:

• To reduce risk of serious injury from accidental actuation when attempting to adjust depth, ALWAYS;

• Disconnect airsupply.

• Avoid contact with trigger duringadjustments.

Do not drive nails blindly into walls, floors or other work areas. Fasteners driven into live electrical wires, plumbing, or other types of obstructions can result ininjury.

Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use tool while tired or under the influence of drugs or alcohol. A moment of inattention while operating power tools may result in serious personalinjury.

WARNING: After driving a fastener, tool may

bounce back (“recoil”) causing it to move away from the work surface. To reduce risk of injury always manage recoil by:

• Always maintaining control oftool.

• Allowing recoil to move tool away from worksurface.

• Not resisting recoil such that tool will be forced back into the work surface. In “Contact Actuation Mode,” if workpiece contact is allowed to re‑contact work surface before the trigger is released, an unintended discharge of a fastener willoccur.

• Keeping face and body parts away fromtool.

WARNING: Disconnect tool:

• When performing any maintenance or repairs,

• When clearing a jam,

• When elevating, lowering or otherwise moving tool to a new location,

• When tool is outside of the operator's supervision or control,

• When removing fasteners from themagazine.

WARNING: When maintaining the tool:

• Always shut off air supply, and disconnect tool from air supply when not inuse.

• When working on air tools note the warnings in this manual and use extra care when evaluating problemtools. Additional Safety Warnings

WARNING: Do not use this product to fasten electrical

cables. Fastening electric wires / cables could result in electric shock or seriousharm.

WARNING: Make sure there are no electrical cables,

gas pipes, etc. that could cause a hazard if damaged by use of thetool. splitting or splintering, or free flight or ricochet of fasteners, which may causeinjury.

• Do not drive fasteners on top of other fasteners or with the tool at an overly steep angle as this may cause deflection of fasteners which could causeinjury.

• Do not load tool with fasteners when any one of the operating controls isactivated.

• Use extra caution when driving fasteners into existing walls or other blind areas to prevent contact with hidden objects or persons on other side (e.g., wires, pipes.)

• The operator must not pull the trigger except during fastening operation as serious injury could result if the tool accidentally contacts someone or something, causing the tool tocycle.

• Keep hands and body away from the discharge area of the tool. The tool may bounce from the recoil of driving a fastener and an unwanted second fastener may be driven possibly causinginjury.

• Check operation of the trigger mechanism frequently. Do not use the tool if the trigger is not working correctly as accidental driving of a fastener may result. Do not interfere with the proper operation of the triggermechanism.

• Never inadvertently pull or grasp the trigger when moving about, changing work location, when holstering or hanging tool, or when preparing work surface for fasteningoperation.

• This tool produces SPARKS during operation. NEVER use the tool near flammable substances, gases or vapors including lacquer, paint, benzine, thinner, gasoline, adhesives, mastics, glues or any other material that is ‑‑ or the vapors, fumes or byproducts of which are ‑‑ flammable, combustible or explosive. Using the fastenerer in any such environment could cause an EXPLOSION resulting in personal injury or death to user andbystanders.

WARNING: Bump Or Contact Actuation Trigger:

• When using the bump action trigger, be careful of unintentional double fires resulting from tool recoil. Unwanted fasteners may be driven if the contact trip is allowed to accidentally re‑contact the work surface.

WARNING: TO AVOID DOUBLE FIRES:

• Do not engage the tool against the work surface with a strongforce.

• Allow the tool to recoil fully after eachactuation.

• Use sequential actiontrigger.

• When bump actuating the nailer, always keep tool in control. Inaccurate placement of tool can result in misdirected discharge of afastener.5 English TOOL SPECIFICATIONS Height (inch/meter) 6.3/0.16 Width (inch/meter) 1.7/0.04 Length (inch/meter) 8.9/0.22 Weight (lbs/kg) 2/0.91 Recommended Operating Pressure 60‑100 psi (4.1 to 6.9 bar) Air Consumption per 100 cycles 1.56 SCF Loading capacity 170 nails Lubrication Oil

ASSEMBLY AND ADJUSTMENTS

WARNING: To reduce the risk of serious personal

injury, turn unit off and remove air supply before making any adjustments or removing/installing attachments or accessories. An accidental actuation can causeinjury. The label on your tool may include the following symbols. The symbols and their definitions are asfollows: BPM .................... beats per minute V ......................... volts min ..................... minutes

..................... Class II Construction (double insulated)

..................... wear hearing protection

or AC............alternating current Ah ....................... amp hours mouth, eyes, or lay on the skin may promote absorption of harmfulchemicals. Direct particles away from face andbody.

• Use the appropriate dust extractor vacuum to remove the vast majority of static and airborne dust. Failure to remove static and airborne dust could contaminate the working environment or pose an increased health risk to the operator and those in closeproximity.

• Use clamps or other practical ways to secure and support the workpiece to a stable platform. Holding the work by hand or against your body is unstable and may lead to loss ofcontrol andinjury.

• Air vents often cover moving parts and should be avoided. Loose clothes, jewelry or long hair can be caught in movingparts. Additional Safety Information

WARNING: Never modify the power tool or any part of

it. Damage or personal injury couldresult.

WARNING: ALWAYS use safety glasses. Everyday

eyeglasses are NOT safety glasses. Also use face or dust mask if cutting operation is dusty. ALWAYS WEAR CERTIFIED SAFETYEQUIPMENT:

Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Some examples of these chemicalsare:

• lead from lead‑based paints,

• crystalline silica from bricks and cement and other masonry products, and

• arsenic and chromium from chemically‑treatedlumber. Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to these chemicals: work in a well ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to filter out microscopicparticles.

• Wear protective clothing and wash exposed areas with soap and water. Allowing dust to get into your

WARNING: This tool is not intended for use in

potentially explosive atmospheres and is not insulated from coming into contact with electricalpower.

• Use the pneumatic tool only for the purpose for which it wasdesigned.

• Do not use the tool as ahammer.

• Always carry the tool by the handle with hand off both triggers.

• Never lift, pull, lower, or carry the tool by the airhose.

• Whipping hoses can cause severe injury. Always check for damaged or loose hoses orfittings.

• Never direct compressed air at yourself or anyoneelse.

• Compressed air can cause severeinjury.

• Do not alter or modify this tool from the original design or function without approval fromCRAFTSMAN.

• Never clamp or tape the trigger in an actuatedposition.

• Ensure tool is always safely engaged on the workpiece and cannotslip.

• Never leave a tool unattended with the air hoseattached. TO PREVENT ACCIDENTAL INJURIES:

• Never place a hand or any other part of the body in fastener discharge area of tool while the air supply isconnected.

• Never actuate the tool unless nose is directed at thework.

• Do not actuate the tool whileloading.

• Keep hands and body parts away from the discharge area of the tool. While in use NEVER grasp the tool by the magazine or canister, a mis‑driven fastener can exit the nose causinginjury.ENGLISH

Proper Hand Position (Fig.D)

WARNING: To reduce the risk of serious personal injury,

WARNING: To reduce the risk of serious personal

injury, ALWAYS hold securely in anticipation of a suddenreaction. Proper hand position requires one hand on the main handle

WARNING: To reduce the risk of serious personal

injury, turn unit off and remove air supply before making any adjustments or removing/installing attachments or accessories. An accidental actuation can causeinjury. Using the Secondary Trigger (Fig.A)

WARNING: To reduce the risk of injury, Always wear

proper eye [ANSI Z87.1 (CAN/CSA Z94.3)] and hearing protection [ANSI S12.6 (S3.19)] when operating thistool.

WARNING: Do not keep trigger depressed when tool is

not in use. Serious personal injury mayresult.

WARNING: Disconnect air line from tool and remove

fasteners from magazine before making adjustments. Serious personal injury mayresult. The tool is locked off until the secondary trigger

• Before you use the tool, be sure that the compressor tanks have been properlydrained. NOTE: Use a filter and regulator whenpossible.

• Wear proper eye, hearing and respiratoryprotection.

• Remove all fasteners from the magazine.

• Check for smooth and proper operation of contact trip and pusher assemblies. Do not use tool if either assembly is not functioning properly. NEVER use a tool that has the contact trip restrained in the upposition.

• Check air supply: Ensure air pressure does not exceed operating limits; 60to 100p.s.i.g., (4.1 to 6.9 kg/cm

• Lubricate tool: ‑ Use CRAFTSMAN pneumatic tool oil or a non-detergent S.A.E. 20weight oil. DO NOT use detergent oil or additives as they will damage O-rings and rubberparts. ‑ Use a filter whenpossible. ‑ Add 5to 7drops of oil in the air fitting a least twice aday.

• Keep tool pointed away from yourself andothers.

• Check for audible leaks around valves and gaskets. Never use a tool that leaks or has damagedparts. Preparing the Tool

WARNING: Read the section titled IMPORTANT

SAFETY INSTRUCTIONS at the beginning of this manual. Always wear proper eye [ANSI Z87.1 (CAN/ CSA Z94.3)] and hearing protection [ANSI S12.6 (S3.19)] when operating this tool. Keep the fastener pointed away from yourself and others. For safe operation, complete the following procedures and checks before each use of thefastener. NOTICE: To reduce the risk of damage to the tool, only use pneumatic tool oil or a non‑detergent SAE 20weight oil. Oil with additives or detergent will damage toolparts. Trigger (Fig.A)

WARNING: Keep fingers AWAY from trigger when not

driving fasteners to avoid accidental firing. Never carry tool with finger ontrigger.

WARNING: Once the secondary trigger is pulled the

tool will drive a fastenere every time the primary trigger ispulled. This tool is equipped with with a dual trigger actuation system. the secondary trigger

must be depressed in order to depress the primary trigger

. Each time the primary trigger is depressed the tool will fire afastener. Air Fitting (Fig.B, C) The tool is equipped with a 1/4” (6.4mm) male quick connector coupling. A 3/8” (9.5mm) male quick connector coupling may be used when a 1/4” (6.4mm) supply line is not available. NOTE: A 3/8” (9.5mm) supply line (and fittings) are required for maximum tool performance. IMPORTANT: Always use couplings that relieve all pressure from the tool when it is disconnected from the power supply. Always use hose connectors that shut off air supply from compressor when the tool is disconnected. To Install an Air Fitting

1. Wrap the male end of the fitting with thread seal tape

prior to assembly to eliminate airleaks.

2. To install a 1/4” (6.4mm) fitting: screw it directly into the

and tighten firmly. NOTE: If a cap is in the air inlet, remove it prior to inserting the fitting.

3. To install a 3/8” (9.5mm) fitting: screw the fitting into the

3/8” (9.5mm) adapter and then into the air inlet of the tool and tightenfirmly. FASTENER SPECIFICATIONS Model Nail 23 gauge pin nails Lengths 1/2” (13 mm) –1” (25 mm) Air Inlet 1/4” NPT (6.4 mm) NOTE: Use only CRAFTSMAN approved fasteners.7 English MAINTENANCE

WARNING: To reduce the risk of serious personal

injury, turn unit off and remove air supply before making any adjustments or removing/installing attachments or accessories. An accidental actuation can causeinjury. Hot Weather Operation Tool should operate normally. However, keep tool out of direct sunlight as excessive heat can deteriorate bumpers, o-rings and other rubber parts resulting in increasedmaintenance. Cold Weather Operation

WARNING: To reduce the risk of serious personal

injury, turn unit off and remove air supply before making any adjustments or removing/installing attachments or accessories. An accidental actuation can causeinjury.

WARNING: Do not store tools in a cold weather

environment to prevent frost or ice formation on the tools operating valves and mechanisms that could cause toolfailure.

WARNING: Some commercial air line drying

liquids are harmful to “O”‑rings and seals – do not use these low temperature air dryers without checkingcompatibility. When operating tools at temperatures below freezing:

1. Make sure compressor tanks have been properly drained

2. Keep tool as warm as possible prior touse.

3. Make certain all fasteners have been removed

4. Lower air pressure to 80p.s.i.g. orless.

5. Reconnect air and and load fasteners into magazine.

6. Turn pressure up to operating level (not to exceed

120p.s.i.g.) and use tool as normal.

7. Always drain the compressor tanks at least once adaily.

If a nail becomes jammed in the nosepiece, keep the tool pointed away from you and follow these instructions toclear:

1. Disconnect air supply fromtool.

2. Push magazine release

back. Removefasteners.

and then using hex wrench to remove two bolts

5. Examine the feed track and clear any damaged pins or

6. Replace nosepiece and tighten boltssecurely.

7. Reattach airsupply.

8. Reload the tool (see LoadingFasteners).

nOTE: Should nails continue to jam frequently in nosepiece, have tool serviced by an authorized servicecenter. Clearing a Jammed Nail (Fig.A, B, E)

WARNING: Disconnect the tool from the air supply

and remove fasteners from magazine before making adjustments or personal injury mayresult. Depth Adjustment

WARNING: To reduce the risk of serious personal

injury, turn unit off and remove air supply before making any adjustments or removing/installing attachments or accessories. An accidental actuation can causeinjury.

CAUTION: Air pressure in excess of that required can cause premature wear and/or damage to thetool. The depth that a fastener is driven is controlled by the pressure of the air supply. The amount of air pressure required will vary depending on the length of the fastener and the material being fastened. Experiment with the air pressure setting to determine the lowest setting that will consistently perform the job at hand. Actuating Tool (Fig.A)

WARNING: To reduce the risk of injury, Always wear

proper eye [ANSI Z87.1 (CAN/CSA Z94.3)] and hearing protection [ANSI S12.6 (S3.19)] when operating thistool.

WARNING: A nail will fire each time the trigger is

depressed which could result in accidentalactuation.

against the worksurface.

2. Depress the secondary trigger

to unlock the trigger

Now depress the trigger. A fastener is fired each time the primary trigger isdepressed.

CAUTION: Each time a fastener is fired, a blast of air will be exhausted from the rear exhaust. Keep your face away from thisarea. Loading Fasteners (Fig.A, B, E)

WARNING: Keep the tool pointed away from yourself

and others. Serious personal injury mayresult.

WARNING: Never load nails with the trigger or triggers

activated. Personal injury mayresult.

1. Read all Safety Warnings before usingtool.

2. Connect the tool to air supply.

3. Push magazine release

back. Make sure the primary and secondary trigger arereleased.

4. Insert fasteners into the bottom of the magazine. For

fasteners with arrows the direction arrow printed on the fasteners should point down into the bottom of magazine. nOTE: Make sure fasteners are placed firmly against lower ledge ofmagazine.

5. Push magazine closed until it locks in place. Make sure

the magazine snaps intoplace.

and reload when needed. nOTE: The tool will not fire when only a few fasteners are left in the magazine, reload fasteners to begin firing again.ENGLISH

Three Year Limited Warranty CRAFTSMAN will repair or replace, without charge, any defects due to faulty materials or workmanship for three years from the date of purchase. This warranty does not cover part failure due to normal wear or tool abuse. For further detail of warranty coverage and warranty repair information, visit www.craftsman.com or call 1-888-331-4569. This warranty does not apply to accessories or damage caused where repairs have been made or attempted by others. THIS LIMITED WARRANTY IS GIVEN IN LIEU OF ALL OTHERS, INCLUDING THE IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR A

PARTICULAR PURPOSE, AND EXCLUDES ALL INCIDENTAL

OR CONSEQUENTIAL DAMAGES. Some states do not allow limitations on how long an implied warranty lasts or the exclusion or limitation of incidental or consequential damages, so these limitations may not apply to you. This warranty gives you specific legal rights and you may have other rights which vary in certain states orprovinces.

90DAY MONEY BACK GUARANTEE

If you are not completely satisfied with the performance of your CRAFTSMAN Power Tool or Nailer for any reason, you can return it within 90days from the date of purchase with a receipt for a full refund – no questionsasked. LATIN AMERICA: This warranty does not apply to products sold in Latin America. For products sold in Latin America, see country specific warranty information contained in the packaging, call the local company or see website for warrantyinformation. FREE WARNING LABEL REPLACEMENT: If your warning labels become illegible or are missing, call 1-888-331-4569 for a freereplacement. Register Online Thank you for your purchase. Register your product nowfor:

• WARRANTY SERVICE: Registering your product will help you obtain more efficient warranty service in case there is a problem with yourproduct.

• CONFIRMATION OF OWNERSHIP: In case of an insurance loss, such as fire, flood or theft, your registration of ownership will serve as your proof ofpurchase.

• FOR YOUR SAFETY: Registering your product will allow us to contact you in the unlikely event a safety notification is required under the Federal Consumer SafetyAct.

• Register online at www.craftsman.com/registration Repairs

WARNING: To assure product SAFETY and RELIABILITY,

repairs, maintenance and adjustment (including brush inspection and replacement, when applicable) should be performed by a CRAFTSMAN factory service center or a CRAFTSMAN authorized service center. Always use identical replacementparts. Accessories

WARNING: Since accessories, other than those

offered by CRAFTSMAN, have not been tested with this product, use of such accessories with this tool could be hazardous. To reduce the risk of injury, only CRAFTSMAN recommended accessories should be used with thisproduct. Recommended accessories for use with your tool are available at extra cost from your local dealer or authorized service center. If you need assistance in locating any accessory, please contact CRAFTSMAN call 1-888-331-4569 . Cleaning

WARNING: Blow dirt and dust out of all air vents with

clean, dry air at least once a week. To minimize the risk of eye injury, always wear ANSI Z87.1approved eye protection when performingthisprocedure.

WARNING: Never use solvents or other harsh

chemicals for cleaning the non‑metallic parts of the tool. These chemicals may weaken the plastic materials used in these parts. Use a cloth dampened only with water and mild soap. Never let any liquid get inside the tool; never immerse any part of the tool into aliquid. Action Why How Lubricate tool with 2–3 drops of CRAFTSMAN pneumatic Tool Oil. Prevents failure of O‑rings. Insert drops into air inlet fitting. Drain compressor tanks and hoses daily. Prevents accumulation of moisture in compressor and nailer. Open petcocks or other drain valves on compressor tanks. Allow any accumulated water to drain from hoses. Clean magazine, magazine release and contact trip mechanism. Permits smooth operation of magazine, reduces wear and prevents jams. Blow clean with compressor air. The use of oils, lubricants periodically or solvents is not recommended as they tend to attract debris. Before each use, check to insure all screws, nuts and fasteners are tight and undamaged. Prevents jams, leaks and premature failure of tool parts. Tighten loose screws or other fasteners using the appropriate hex wrench or screwdriver.9 ENGLISH Troubleshooting Problem Cause Correction Trigger valve housing leaks air. O‑ring cut or cracked. Replace O‑ring. Trigger valve stem leaks air. O‑ring/seals cut or cracked. Replace trigger valve assembly. Frame/nose leaks air. Loose nose screws. Tighten and recheck. O‑ring or gasket is cut or cracked. Replace O‑ring or gasket. Bumper cracked/worn. Replace bumper. Frame/cap leaks air. Damaged gasket or seal. Replace gasket or seal. Cracked/worn head valve bumper. Replace bumper. Loose cap screws. Tighten and recheck. Failure to cycle. Air supply restriction. Check air supply equipment. Tool dry, lack of lubrication. Use Air Tool Lubricant. Worn head valve O‑rings. Replace O‑rings. Broken cylinder cap spring. Replace cylinder cap spring. Head valve stuck in cap. Disassemble/Check/Lubricate. Lack of power; slow to cycle. Tool dry, lacks lubrication. Use Air Tool Lubricant. Broken cylinder cap spring. Replace cap spring. O‑rings/seals cut or cracked. Replace O‑rings/seals. Exhaust blocked . Check bumper, head valve spring, muffler. Trigger assembly worn/leaks. Replace trigger assembly. Dirt/tar build up on driver. Disassemble nose/driver to clean. Cylinder sleeve not seated correctlyon bottom bumper. Disassemble to correct. Head valve dry. Disassemble/lubricate. Air pressure too low. Check air supply equipment. Skipping fasteners; intermittent feed. Worn bumper. Replace bumper. Tar/dirt in driver channel. Disassemble and clean nose and driver. Air restriction/inadequate air flow through quick disconnect socket and plug. Replace quick disconnect fittings. Worn piston O‑ring. Replace O‑ring, check driver. Tool dry, lacks lubrication. Use Air Tool Lubricant. Damaged pusher spring. Replace spring. Low air pressure. Check air supply system to tool. Loose magazine nose screws. Tighten all screws. Fasteners too short for tool. Use only recommended fasteners. Bent fasteners. Discontinue using these fasteners. Wrong size fasteners. Use only recommended fasteners. Leaking head cap gasket. Tighten screws/replace gasket. Trigger valve O‑ring cut/worn. Replace O‑ring. Broken/chipped driver. Replace driver (check piston O‑ring). Dry/dirty magazine. Clean/lubricate use Air Tool Lubricant. Worn magazine. Replace magazine. Fasteners jam in tool. Driver channel worn. Replace nose/check door. Wrong size fasteners. Use only recommended fasteners. Bent fasteners. Discontinue using these fasteners. Loose magazine/nose screws. Tighten all screws. Broken/chipped driver. Replace driver.FRAnçAis