Bostitch Staple Gun 651S5 User Manual

651 SERIES  
PNEUMATIC STAPLER  
ENGRAPADORA NEUMÁTICA  
AGRAFEUSE  
OPERATION and MAINTENANCE MANUAL  
MANUAL DE OPERACIÓN Y DE MANTENIMIENTO  
MANUEL D’INSTRUCTIONS ET D’ENTRETIEN  
BEFORE OPERATING THIS TOOL, ALL OPERATORS SHOULD STUDY THIS MANUAL TO  
UNDERSTAND AND FOLLOW THE SAFETY WARNINGS AND INSTRUCTIONS. KEEP THESE  
INSTRUCTIONS WITH THE TOOL FOR FUTURE REFERENCE. IF YOU HAVE ANY QUESTIONS,  
CONTACT YOUR BOSTITCH REPRESENTATIVE OR DISTRIBUTOR.  
ANTES DE OPERAR ESTA HERRAMIENTA, TODOS LOS OPERADORES DEBERÁN ESTUDIAR  
ESTE MANUAL PARA PODER COMPRENDER Y SEGUIR LAS ADVERTENCIAS SOBRE  
SEGURIDAD Y LAS INSTRUCCIONES. MANTENGA ESTAS INSTRUCCIONES CON LA  
HERRAMIENTA PARA FUTURA REFERENCIA, SI TIENE ALGUNA DUDA, COMUNÍQUESE CON  
SU REPRESENTANTE DE BOSTITCH O CON SU DISTRIBUIDOR.  
LIRE ATTENTIVEMENT LE PRÉSENT MANUEL AVANT D’UTILISER LAPPAREIL. PRÉTER UNE  
ATTENTION TOUTE PARTICULIÈRE AUX CONSIGNES DE SÉCURITÉ ET AUX  
AVERTISSEMENTS. GARDER CE MANUEL AVEC LOUTIL POUR FUTUR RÉFÉRENCE. SI VOUS  
AVEZ DES QUESTIONS, CONTACTEZ VOTRE REPRÉSENTANT OU VOTRE CONCESSIONNAIRE  
BOSTITCH.  
STANLEY FASTENING SYSTEMS L.P.  
189863RA 04/10  
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SAFETY INSTRUCTIONS  
EYE PROTECTION which conforms to ANSI specifications and provides protection against  
flying particles both from the FRONT and SIDE should ALWAYS be worn by the operator and  
others in the work area when connecting to air supply, loading, operating or servicing this  
tool. Eye protection is required to guard against flying fasteners and debris, which could  
cause severe eye injury.  
The employer and/or user must ensure that proper eye protection is worn. Eye protection  
equipment must conform to the requirements of the American National Standards Institute,  
ANSI Z87.1 and provide both frontal and side protection. NOTE: Non-side shielded  
spectacles and face shields alone do not provide adequate protection.  
CAUTION: Additional Safety Protection will be required in some environments. For  
example, the working area may include exposure to noise level which can lead to hearing  
damage. The employer and user must ensure that any necessary hearing protection is  
provided and used by the operator and others in the work area. Some environments will  
require the use of head protection equipment. When required, the employer and user must  
ensure that head protection conforming to ANSI Z89.1 is used.  
AIR SUPPLY AND CONNECTIONS  
Do not use oxygen, combustible gases, or bottled gases as a power source for this tool as  
tool may explode, possibly causing injury.  
Do not use supply sources which can potentially exceed 200 P.S.I.G. as tool may burst,  
possibly causing injury.  
The connector on the tool must not hold pressure when air supply is disconnected. If a  
wrong fitting 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 causing injury.  
Do not pull trigger or depress contact arm while connected to the air supply as the tool may  
cycle, possibly causing injury.  
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 causing injury.  
LOADINGTOOL  
When loading tool: 1.) Never place a hand or any part of body in fastener discharge area of  
tool; 2.) Never point tool at anyone; 3.) Do not pull the trigger or depress the trip as  
accidental actuation may occur, possibly causing injury.  
OPERATION  
Always handle the tool with care: 1.) Never engage in horseplay; 2.) Never pull the trigger  
unless nose is directed toward the work; 3.) Keep others a safe distance from the tool while  
tool is in operation as accidental actuation may occur, possibly causing injury.  
The operator must not hold the trigger pulled on contact arm tools except during fastening  
operation as serious injury could result if the trip accidentally contacted someone or  
something, causing the tool to cycle.  
Keep hands and body away from the discharge area of the tool. A contact arm tool may  
bounce from the recoil of driving a fastener and an unwanted second fastener may be driven  
possibly causing injury.  
Check operation of the contact arm mechanism frequently. Do not use the tool if the arm  
is not working correctly as accidental driving of a fastener may result. Do not interfere with  
the proper operation of the contact arm mechanism.  
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 cause injury.  
Do not drive fasteners close to the edge of the work piece as the wood may split, allowing  
the fastener to be deflected possibly causing injury.  
This nailer produces SPARKS during operation. NEVER use the nailer 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 by-products of which are -- flammable,  
combustible or explosive. Using the nailer in any such environment could cause an EXPLOSION  
resulting in personal injury or death to user and bystanders.  
Never use utility hook to hang tool from body, clothing or belt.  
Always verify and be aware of tool operating mode by inspecting the trigger before connecting  
to an air supply and/or using the tool.  
Be aware that once the mode locking pin is removed, the trigger is converted to a selectable  
trigger, enabling both contact trip and sequential trip operating modes.  
-3-  
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MAINTAININGTHETOOL  
When working on air tools note the warnings in this manual and use extra care when  
evaluating problem tools.  
TOOL SPECIFICATIONS  
All dimensions in inches unless otherwise specified.  
651S5  
7/16” Crown Stapler  
70-120 PSI (4.9 to 8.43kg/cm2)  
16S5 & 17S5 Series Staples  
16 & 17 Gauge  
Description  
Operation Pressure Range  
Fastener Type  
Fastener Gauge  
Fastener Range  
Magazine Capacity  
Length  
1” to 2” (25mm to 50mm)  
120  
14”  
Width  
3 1/8”  
11”  
Height  
Weight  
4.3 lbs.  
Tool Air Fitting:  
This tool uses a free-flow connector plug, 1/4” N.P.T. The minimum inside diameter should be .200” (5mm).  
The fitting must be capable of discharging tool air pressure when disconnected from the air supply.  
Operating Pressure:  
70 to 120 p.s.i.g. (4.9 to 8.43 kg/cm2). Select the operating pressure within in this range for best fastener  
performance. DO NOT EXCEED THIS RECOMMENDED OPERATING PRESSURE.  
Air Consumption:  
The 651 Series staplers require 5.3 cubic feet per minute or C.F.M. (150 liters per minute or LT/MIN) of free  
air at 80PSI (5.6 kg/cm2) to operate at a rate of 100 fasteners per minute. To determine the appropriately  
sized air compressor, take the actual rate at which the tool will be run and compare the required C.F.M.  
(LT/MIN) to the compressors free air delivery (C.F.M./ LT/MIN) at 80 PSI (5.6 kg/cm2).  
For example, if your fastener usage averages 50 fasteners per minute, you need 50% of the tools C.F.M.  
required to operate the tool at the rate of 100 fasteners per minute. In this case, be sure that your air  
compressor can deliver a minimum of 2.7 C.F.M. (75 LT/MIN) at 80 PSI(5.6 kg/cm2) for optimum performance.  
FASTENER SPECIFICATIONS  
Tool Model  
Fastener SKU  
Gauge  
Crown Width  
Length  
16S5-35  
16S5-38  
16S5-44  
16S5-44GAL  
16S5-50  
16S5-50GAL  
17S5-25G  
17S5-28G  
17S5-31G  
17S5-34G  
17S5-38G  
17S5-41G  
17S5-44G  
17S5-50G  
7/16”  
7/16”  
7/16”  
7/16”  
7/16”  
7/16”  
7/16”  
7/16”  
7/16”  
7/16”  
7/16”  
7/16”  
7/16”  
7/16”  
1-3/8” (35mm)  
1-1/2” (38mm)  
1-3/4” (44mm)  
1-3/4” (44mm)  
2” (50mm)  
16  
16  
16  
16  
16  
16  
17  
17  
17  
17  
17  
17  
17  
17  
2” (50mm)  
1” (25mm)  
651S5-1  
1-1/8” (28mm)  
1-1/4” (31mm)  
1-3/8” (34mm)  
1-1/2” (38mm)  
1-5/8” (41mm)  
1-3/4” (44mm)  
2” (50mm)  
* Stainless steel fasteners also available in certain sizes. Visit www.BOSTITCH.com for further details.  
NOTE: BOSTITCH tools have been engineered to provide superior customer satisfaction and are  
designed to achieve maximum performance when used with precision BOSTITCH fasteners engineered to  
the same exacting standards. BOSTITCH cannot assume responsibility for product performance if  
our tools are used with fasteners or accessories not meeting the specific requirements established  
for genuine BOSTITCH fasteners and accessories.  
-4-  
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OPERATING MODES  
Always disconnect air supply before making adjustments as accidental actuation may  
occur, possibly causing injury.  
BOSTITCH OFFERS TWO MODES OF OPERATION FOR THIS SERIES TOOL.  
CONTACT TRIP:  
The common operation procedure on “Contact Trip” tools is for the operator to contact the work surface to  
actuate the trip mechanism while keeping the trigger pulled, thus driving a fastener each time the work surface  
is contacted. This will allow rapid fastener placement on many jobs. All pneumatic tools are subject to recoil  
when driving fasteners. The tool may bounce, releasing the trip, and if unintentionally allowed to re-contact the  
work surface with the trigger still actuated (finger still holding the trigger pulled) an unwanted second fastener  
will be driven.  
SEQUENTIAL TRIP:  
The Sequential Trip requires the operator to hold the tool against the work before pulling the trigger.This makes  
accurate fastener placement easier. The Sequential Trip allows exact fastener location without the possibility if  
driving a second fastener on recoil as described under “Contact Trip”. The Sequential Trip Tool has a positive  
advantage because it will not accidentally drive a fastener if the tool is contacted against the work surface - or  
anything else - while the operator is holding the trigger pulled.  
MODE IDENTIFICATION:  
Refer to Tool Operation Instructions on pages 9-10 before proceeding to use this tool.  
Sequential Trip Mode  
Contact Trip Mode  
(trip mode selector switch pointing up)  
(trip mode selector switch pointing down)  
HOW TO CHANGE OPERATING MODES:  
The 651 stapler is initially locked in the sequential trip operating mode. In order to enable the mode selection  
feature, the mode locking pin must be removed as shown in FIG A.  
Be aware that once the mode locking pin is removed, the trigger is converted to a selectable  
trigger, enabling either sequential trip or contact trip operating modes.  
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 causing injury.  
Selecting Contact Trip Mode: Refer to Fig A.  
1) Remove mode locking pin.  
2) Push in pivot pin and hold.  
pivot  
pin  
3) Rotate the selector 180 degrees counter-clockwise to  
the contact trip position, while pushing in the pivot pin.  
4) Ensure the selector is fully seated in the new position.  
locking  
pin  
Always verify and be aware of tool operating  
mode by inspecting the trigger before connecting  
to an air supply and/or using the tool.  
trip selector  
Selecting Sequential Trip Mode:  
1) Remove mode locking pin (if installed).  
2) Push in pivot pin and hold.  
FIG A  
3) Rotate the selector 180 degrees clockwise to the  
sequential trip position, while pushing in the pivot pin.  
4) Ensure the selector is fully seated in the new position.  
-5-  
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AIR SUPPLY AND CONNECTIONS  
Do not use oxygen, combustible gases, or bottled gases as a power source for this tool as  
tool may explode, possibly causing injury.  
FITTINGS:  
Install a male plug on the tool which is free flowing and which will release air pressure from the tool when  
disconnected from the supply source.  
HOSES:  
Air hoses should have a minimum of 150 p.s.i. (10.6 kg/cm2) working pressure rating or 150 percent of the  
maximum pressure that could be produced in the air system. The supply hose should contain a fitting that will  
provide “quick disconnecting” from the male plug on the tool.  
SUPPLY SOURCE:  
Use only clean regulated compressed air as a power source for this tool. NEVER USE OXYGEN, COMBUSTIBLE  
GASES, OR BOTTLED GASES, AS A POWER SOURCE FOR THIS TOOL AS TOOL MAY EXPLODE.  
REGULATOR:  
A pressure regulator with an operating pressure of 0 - 125 p.s.i. (0 - 8.79 kg/cm2) is required to control the  
operating pressure for safe operation of this tool. Do not connect this tool to air pressure which can potentially  
exceed 200 p.s.i. (14 kg/cm2) as tool may fracture or burst, possibly causing injury.  
OPERATING PRESSURE:  
Do not exceed recommended maximum operating pressure as tool wear will be greatly increased. The air  
supply must be capable of maintaining the operating pressure at the tool. Pressure drops in the air supply can  
reduce the tool’s driving power. Refer to “TOOL SPECIFICATIONS” for setting the correct operating pressure  
for the tool.  
FILTER:  
Dirt and water in the air supply are major causes of wear in pneumatic tools. A filter will help to get the best  
performance and minimum wear from the tool. The filter must have adequate flow capacity for the specific  
installation.The filter has to be kept clean to be effective in providing clean compressed air to the tool. Consult  
the manufacturer’s instructions on proper maintenance of your filter. A dirty and clogged filter will cause a  
pressure drop which will reduce the tool’s performance.  
LUBRICATION  
Frequent, but not excessive, lubrication is required for best performance. Use BOSTITCH Air Tool Lubricant, Mobil  
Velocite #10, or equivalent. Do not use detergent oil or additives as these lubricants will cause accelerated wear to the  
seals and bumpers in the tool, resulting in poor tool performance and frequent tool maintenance. Only a few drops of  
oil at a time is necessary.Too much oil will only collect inside the tool and will be noticeable in the exhaust cycle.  
COLD WEATHER OPERATION:  
For cold weather operation, near and below freezing, the moisture in the air line may freeze and prevent tool operation.  
We recommend the use of BOSTITCH winter formula air tool lubricant or permanent antifreeze (ethylene glycol) as a  
cold weather lubricant.  
CAUTION: 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 tool failure.  
NOTE:Some commercial air line drying liquids are harmful to “O”-rings and seals – do not use these  
low temperature air dryers without checking compatibility.  
-6-  
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LOADINGTHE 651 STAPLER  
EYE PROTECTION which conforms to ANSI specifications and provides protection against  
flying particles both from the FRONT and SIDE should ALWAYS be worn by the operator and  
others in the work area when connecting to air supply, loading, operating or servicing this  
tool. Eye protection is required to guard against flying fasteners and debris, which could  
cause severe eye injury.  
The employer and/or user must ensure that proper eye protection is worn. Eye protection  
equipment must conform to the requirements of the American National Standards Institute,  
ANSI Z87.1 and provide both frontal and side protection. NOTE: Non-side shielded  
spectacles and face shields alone do not provide adequate protection.  
TO PREVENT ACCIDENTAL INJURIES:  
Never place a hand or any other part of the body in nail discharge area of tool while  
the air supply is connected.  
• Never point the tool at anyone else.  
• Never engage in horseplay.  
• Never pull the trigger unless nose is directed at the work.  
• Always handle the tool with care.  
• Do not pull the trigger or depress the trip mechanism while loading the tool.  
LOADING THE 651 SERIES STAPLERS:  
1. Move pusher to rear until latched. Cover will open. Pusher will be held in place by a pin detent.  
2. Drop staples over magazine and slide forward. Repeat until magazine is loaded.  
3. Pull Pusher back slightly and depress pin detents. Allow pusher to slide forward over the pin detent.  
-7-  
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FASTENER DEPTH CONTROL ADJUSTMENT  
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 causing injury.  
The Fastener Depth Control Adjustment feature provides control of the staple drive depth from flush with or  
just above the work surface to shallow or deep countersink.  
TO ADJUST THE FASTENER DEPTH CONTROL:  
Disconnect tool from air supply before attempting any parts disassembly and before  
changing the work contacting element adjustment.  
1) Loosen screw with 4mm hex key.  
2) Move sliding shoe down (away from nose) to decrease the  
drive depth or up (toward the nose) to increase the drive depth.  
3) Tighten screw with 4mm hex key  
IN ADDITIONTOTHE OTHER WARNINGS CONTAINED INTHIS  
MANUAL OBSERVETHE FOLLOWING FOR SAFE OPERATION  
• Use the BOSTITCH pneumatic tool only for the purpose for which it was designed.  
• Never use this tool in a manner that could cause a fastener to be directed toward the user  
or others in the work area.  
• Do not use the tool as a hammer.  
• Always carry the tool by the handle. Never carry the tool by the air hose.  
• Do not alter or modify this tool from the original design or function without approval from  
BOSTITCH, INC.  
• Always be aware that misuse and improper handling of this tool can cause injury to  
yourself and others.  
• Never clamp or tape the trigger or contact trip in an actuated position.  
• Never leave a tool unattended with the air hose attached.  
• Do not operate this tool if it does not contain a legible WARNING LABEL.  
• Do not continue to use a tool that leaks air or does not function properly. Notify your nearest  
Bostitch representative if your tool continues to experience functional problems.  
-8-  
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TOOL OPERATION  
EYE PROTECTION which conforms to ANSI specifications and provides protection against  
flying particles both from the FRONT and SIDE should ALWAYS be worn by the operator and  
others in the work area when connecting to air supply, loading, operating or servicing this  
tool. Eye protection is required to guard against flying fasteners and debris, which could  
cause severe eye injury.  
The employer and/or user must ensure that proper eye protection is worn. Eye protection  
equipment must conform to the requirements of the American National Standards Institute,  
ANSI Z87.1 and provide both frontal and side protection. NOTE: Non-side shielded  
spectacles and face shields alone do not provide adequate protection.  
BEFORE HANDLING OR OPERATING THIS TOOL:  
I. READ AND UNDERSTAND THE WARNINGS CONTAINED IN THIS MANUAL.  
II. REFER TO “TOOL SPECIFICATIONS” IN THIS MANUAL TO IDENTIFY THE  
OPERATING SYSTEM ON YOUR TOOL.  
There are two available operation modes on these BOSTITCH pneumatic tools. They are:  
1. SEQUENTIAL TRIP OPERATION 2. CONTACT TRIP OPERATION  
OPERATION  
BOSTITCH offers two types of operating modes which function differently: Sequential Trip and Contact Trip.  
Each mode has specific advantages. You should evaluate your particular construction project to determine  
which mode is best.  
Your tool was shipped from the factory in the Sequential Trip configuration. It can easily be converted to the  
Contact Trip mode of operation using this Contact Trip conversion kit. Refer to “How to Change Operator Modes”  
to change between Sequential Trip and Contact Trip modes.  
Always verify and be aware of tool operating mode by inspecting the trigger before connecting to  
an air supply and/or using the tool.  
1. SEQUENTIAL TRIP OPERATION:  
The Sequential Trip (Mode) gets its name from the “sequence” required to drive a fastener. To drive a fastener,  
the operator must first depress the “trip” FULLY against the work surface and then pull the trigger. To drive a  
second nail, the operator must lift the tool from the work surface, release the trigger and then repeat the above  
sequence.  
1. The Sequential Trip (Mode): offers a positive safety advantage since it will not  
accidentally drive a fastener if the tool is bumped against any surface or anybody while  
the operator is holding the tools with the trigger pulled.  
2. The Sequential Trip (Mode): allows “place nailing” without the possibility of driving a  
second, unwanted fastener on recoil as described below under “Contact Trip”.  
2. CONTACT TRIP OPERATION:  
Be aware that once the mode locking pin is removed, the trigger is converted to a selectable  
trigger, enabling both contact trip and sequential trip operating modes.  
Your new BOSTITCH tool can be configured for use in Contact Trip “Conventional trip” mode. To drive a nail,  
the “trip” and the trigger must both be depressed. In conventional Contact Trip tools, the trigger may be  
depressed and held, and each “contact” between the trip and the work surface will drive a nail.  
A. SINGLE FASTENER PLACEMENT (Place Nailing) -- First position the “trip” FULLY  
on the work surface, WITHOUT PULLING THE TRIGGER. Depress the “trip” FULLY until  
the nose of the tool touches the work surface and then pull the trigger to drive a nail. Do  
not press the tool against the work surface with extra force. Instead, allow the tool to recoil  
off the work surface to avoid a second unwanted fastener. Note: remove your finger from  
the trigger after each operation.  
B. RAPID FIRE OPERATION (“Bump” Nailing) – First, hold the tool with the “trip”  
pointing towards but not touching the work surface. Pull the trigger and then tap or “bump”  
the trip against the work surface using a bouncing motion. Each depression of the “trip”  
will cause a nail to be driven.  
-9-  
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TOOL OPERATION (CONTINUED)  
The Contact Trip will not prevent a nail from being accidentally driven if the trigger is  
depressed and the “trip” is bumped against any object or person. Never hold or carry the  
tool with your finger on the trigger. Only depress and hold trigger when you intend to rapidly  
drive multiple nails and the tool is pointed at the work surface.  
When using conventional Contact Trip for Place Nailing, the tool may bounce due to recoil,  
and if the tool is allowed to re-contact the work surface while you are holding the trigger  
pulled, a second unwanted nail will be driven. You should allow the tool to recoil far enough  
to release the trip and avoid a second cycle. Don’t push the tool down extra hard; let the  
tool do the work.  
The operator must not hold the trigger pulled on contact trip tools except during fastening  
operation, as serious injury could result if the trip accidentally contacted someone or  
something, causing the tool to cycle.  
Keep hands and body away from the discharge area of the tool. A contact trip tool may  
bounce from the recoil of driving a fastener and an unwanted second fastener may be  
driven, possibly causing injury.  
Never use rafter hook to hang tool from body, clothing or belt.  
JAM CLEARING PROCEDURE  
Disconnect tool from air supply before clearing a jam, making adjustments or before  
attempting any part assembly or disassembly.  
On occasion staples can jam in the nose of a pneumatic stapler. This can be caused by striking a metal  
plate in the wall, drywall screw, or some other hard object. The 651 Series staplers feature open drive  
channel architecture for jam clearing. To clear a jam follow this procedure:  
1) Disconnect the tool from the air supply.  
2) Release the pusher so it is no longer applying force to the staples.  
3) Open the jam clearing nose door by pulling down and then up on the latch.  
4) Remove the jammed fastener. In certain circumstances, pliers may be required to remove the fastener.  
5) Close the jam clearing nose door latch.  
6) Release nail pusher back behind staples.  
-10-  
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TOOL OPERATION CHECK  
CAUTION: Remove all fasteners from tool before performing tool operation check.  
1. CONTACT TRIP OPERATION:  
A. With finger off the trigger, press the contact trip against the work surface.  
THE TOOL MUST NOT CYCLE.  
B. Hold the tool off the work surface, and pull the trigger.  
THE TOOL MUST NOT CYCLE.  
C. With the tool off the work surface, pull the trigger. Press the contact trip against the work surface.  
THE TOOL MUST CYCLE.  
D. Without touching the trigger, press the contact trip against the work surface,  
then pull the trigger.  
THE TOOL MUST CYCLE.  
2. SEQUENTIAL TRIP OPERATION:  
A. Press the contact trip against the work surface, without touching the trigger.  
THE TOOL MUST NOT CYCLE.  
B. Hold the tool off the work surface and pull the trigger.  
THE TOOL MUST NOT CYCLE.  
Release the trigger. The trigger must return to the trigger stop on the frame.  
C. Pull the trigger and press the contact trip against the work surface.  
THE TOOL MUST NOT CYCLE.  
D. With finger off the trigger, press the contact trip against the work surface. Pull the trigger.  
THE TOOL MUST CYCLE.  
MAINTAININGTHE PNEUMATICTOOL  
When working on air tools, note the warnings in this manual and use extra care evaluating  
problem tools.  
CAUTION: Pusher spring (constant force spring). Caution must be used when working with the spring  
assembly.The spring is wrapped around, but not attached to, a roller. If the spring is extended beyond  
its length, the end will come off the roller and the spring will roll up with a snap, with a chance of  
pinching your hand. Also the edges of the spring are very thin and could cut. Care must also be taken  
to insure no permanent kinks are put in the spring as this will reduce the springs force.  
REPLACEMENT PARTS:  
Use only genuine BOSTITCH replacement parts. Do not use modified parts.  
ASSEMBLY PROCEDURE FOR SEALS:  
When repairing a tool, make sure the internal parts are clean and lubricated. Use Parker “O”-LUBE,  
Magnalube, or equivalent on all “O”-rings. Coat each “O”-ring with lubricant before assembling.  
AIR SUPPLY-PRESSURE AND VOLUME:  
Air volume is as important as air pressure. The air volume supplied to the tool may be inadequate because of  
undersize fittings and hoses, or from the effects of dirt and water in the system. Restricted air flow will prevent  
the tool from receiving an adequate volume of air, even though the pressure reading is high. The results will be  
slow operation, misfeeds or reduced driving power. Before evaluating tool problems for these symptoms, trace  
the air supply from the tool to the supply source for restrictive connectors, low points containing water and  
anything else that would prevent full volume flow of air to the tool.  
-11-  
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TROUBLE SHOOTING  
PROBLEM  
CAUSE  
CORRECTION  
Trigger valve housing leeaks air  
Trigger valve sttem leaks air  
Frame/nosse leaks air  
O-ring cut or cracked . . . . . . . . . . . . . . . . . . . . .Replace O-ring  
O-ring/seals cut or cracked . . . . . . . . . . . . . . . . .Replace trigger valve assembly  
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/capp leaks air  
Failure too cycle  
Damaged gasket or seal . . . . . . . . . . . . . . . . . .Replace gasket or seal  
Cracked/worn head valve bumper . . . . . . . . . . .Replace bumper  
Loose cap screws . . . . . . . . . . . . . . . . . . . . . . . .Tighten and recheck  
Air supply restriction . . . . . . . . . . . . . . . . . . . . . .Check air supply equipment  
Tool dry, lack of lubrication . . . . . . . . . . . . . . . . .Use BOSTITCH 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  
Tool dry, lacks lubrication . . . . . . . . . . . . . . . . . .Use BOSTITCH 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  
Lack of power;; slow too cycle  
Cylinder sleeve not seated correctly  
on 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 BOSTITCH 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 BOSTITCH Air Tool Lubricant  
Worn magazine . . . . . . . . . . . . . . . . . . . . . . . . .Replace magazine  
Fasteners jamm 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  
-12-  
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AVAILABLE ACCESSORIES  
TVA6  
TRIGGER VALVE KIT  
651-RB1  
651 O-RING KIT  
PREMOIL-4OZ  
PREMIUM PNEUMATIC TOOL OIL  
16S5 SERIES STAPLES  
VSA5  
PRO-3850 & PRO-1450  
PREMIUM POLYURETHANE  
AIR HOSE  
VINYL SIDING ADAPTER  
-13-  
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