Question about Senco Air Tools & Compressors

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I have a senco sn2 nailer,the firing valve washer broke.\r\nwhat is the correct replacement part for this? will the same part that works on a sn325 fit the sn2? ive seen it listed on ebay saying it fits the sn2.

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  • 24 Answers

First make sure you have an SN2 or an SN2+,,,there are differences,,,go to senco.com and get the parts list and exploded view of the gun,,,,then go to juldan.com,,,they are the best of stocking most of the parts for obselete Senco tools!!

Posted on Jan 22, 2013

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  • 2 Answers

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Posted on Jan 02, 2017

  • 24 Answers

SOURCE: Senco sn2 air leak around out top only when the trigger is pulled

There is a cracked seal on the firing valve. It looks like it cant be replaced but it can. Look in your parts breakdown .It seals the firing valve to the cylinder

Posted on Apr 14, 2009

  • 25 Answers

SOURCE: driver sticks down of senco pin nailer

This problem can happen because of several reasons.
Most likely the driver stuck, and not able to move.

First with the tool disconnected from the air supply check to see if there any nails jammed in the nose piece.

If the driver is stuck down, try to push it up. Will it move?

If there are no problems visible at this point you will have to open the tool up, and see if anything looks out of place.

To examine the inside of the tool, unscrew the 4 bolts on the cap of the tool. Gently remove the cap, it may be spring loaded but once the bolts are loosened, there is no reason to be afraid of the parts springing out. Be careful not to let the parts that are in the head cap fall out. Also take care not to rip the gasket. Keep in mind, the less parts inside that you disturb the better so be careful.

If the piston driver does move. Does it move freely?

Sometimes when a driver hits a very hard knot in the wood, or if a nail is hit. The thin driver may bend. If it is moving but with resistance. Use a thin object to push the driver upward from the nose. It will come out of the head cap end.

Check to see if the driver is straight and square to the piston. If it is bent, you may need to replace it. Sometimes you may be able to bend it back enough to allow the piston driver to move freely.

If this solves your problem. To reassemble:

Replace the driver in the correct position. Replace the gasket if it is loose. If parts came out of the head cap, reposition them into the cap. Replace the head cap on to the tool. Replace the bolts, stagger as you tighten them to depress spring loaded parts evenly.

Hook the tool up to your air supply check for air leaks, and fire the tool.


If the driver does not move: Examine to see what is seizing the piston and reply back.

I hope this works!

Posted on Apr 19, 2009

rowdy45176
  • 2176 Answers

SOURCE: Senco SN4 nailer not feeding

ther isn't a spring, it works on air to pull the driver back up. Have you tried oiling the tool as recommended (about 6 drops a day) If not then you have a problem with either o rings that are dried out or worn so they cannot keep the suction required for the tool to operate properly. Might also be a bent driver (doubtful). Go to Senco.com and type in your model number and they list rebuild kits for this tool. If you need more assistance let me know and if I have helped with your request would you please rate this accordingly.

Posted on Sep 12, 2009

rowdy45176
  • 2176 Answers

SOURCE: i have a senco sn325

go to senco.com and you can download a schematic and also there you would be able to price and purchase the parts for the tool if still available, they also have a contact section so you can check to see they are.

Posted on Aug 28, 2011

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1 Answer

Where to get senco parts australia


Try this company:-
Airco Fasteners Pty Ltd.
1 Short St, Silverwater, NSW 2128
Ph: 02 9737 8377
Fax: 02 9737 9274
Email sales@aircofasteners.com.au

Jul 15, 2014 | Senco Tools & Hardware - Others

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Pin nailer problem


Nice video, you did not mention a model number so I will give you general information. If your nailer is oil free type (gun will have stamped on body, no oil ), and you have been using oil directly or indirectly, most likely rubber diaph. is bad or leaking slightly thru head. Replace headvalve. If your nailer uses orings in the head /headvalve instead of diaph. type firing valve, remove head pull headvalve and apply plenty of white grease or silicone paste and retest. If gun works with grease then most likely needs oring kit and or trigger valve or orings in the trigger. If the gun still will not function correctly with grease in the head, then orings in the trigger are worn. Good luck

May 23, 2013 | Air Tools & Compressors

1 Answer

I have a senco sn325 about a 1994 year that the piston crumbled from age and i'm sure needs all other soft parts


go to senco.com and you can download a schematic and also there you would be able to price and purchase the parts for the tool if still available, they also have a contact section so you can check to see they are.

Aug 24, 2011 | Air Tools & Compressors

1 Answer

Sn325 nailer: piston does not retract


Could be a dirty piston, bent driver pin or dirt/rust in the nosepiece... that's where I'd start.

Jul 30, 2011 | Senco Tools & Hardware - Others

1 Answer

Senco sns40 stapler replaced all o rings still leaks air. Even seals in trigger assembly. Leaks out the exhaust port.


Air leaking thru exhaust on sns40 gun is indication of pinhole in rubber diaphragm of firing valve (part #BA0120). This gun is oil-less type and will develope leaks if oil is used. Most likely need to replace firing valve to restore to working order. Parts are at www.toolpartsdirest.com. Good luck

Mar 11, 2011 | Senco Air Tools & Compressors

1 Answer

Air leak top of gun senco oil less coil nailer scw40r. unclehhotmail.comowd@


Nailer scn40r is an oil less coil roofing nailer. If it will not fire and leaks out head then most likely problem is diaphragm torn or pinhole. Replace firing valve part # BAO120 for good as new operation.
Order parts from www.toolpartsdirect.com

Oct 16, 2010 | Senco Tools & Hardware - Others

1 Answer

Sn325 leaks out the top


Easy to repair by replacing oring in head / parts are available here:

http://www.toolpartsdirect.com/cgi-bin/schematic.cgi/senco/SN325+

Good video on how to take apart here : http://www.nailerorings.com/sn325.html


Good luck!

Oct 11, 2010 | Senco Tools & Hardware - Others

1 Answer

SN2 nailer will not nail,air comes out vent at


You will have to take it to a Senco approved repair facility. Sounds like the head seals or rings are shot. Dirt getting in the hose ends when you connnect and reconnect is a possiblity.

Jun 25, 2009 | Tools & Hardware - Others

1 Answer

Senco sn2 air leak around out top only when the trigger is pulled


There is a cracked seal on the firing valve. It looks like it cant be replaced but it can. Look in your parts breakdown .It seals the firing valve to the cylinder

Apr 08, 2009 | Air Tools & Compressors

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