Question about Stanley Bostitch Ehf1838k Engineered Hardwood Flooring Stapler

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I have a ehf1838k staple nailer. I have tried to use it twice now on a project and in both situations the bumper starts to stick and the trigger won't fire. The first time I had to rent anothe

Removed the bumper and made sure it was moving freely. put it back together and it stuck up inside the gun and the gun wouldn't fire.

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Posted on Jan 02, 2017

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SOURCE: Stanley finsish nailer and air is leaking through the trigger as.

If the air is coming out the trigger it must be replaced. Depending on the model of gun you will have to replace the trigger assembly or various o-Rings. Find a Bostitch dealer in your area and they will supply the parts you require.

Posted on Jul 14, 2009

  • 2176 Answers

SOURCE: air blows thru the trigger on both my finish nailer and staple gu

there is an o ring in the trigger valve referred to as a Purple o ring that is probably split. If you can find a air tool center that has them you will save a lot of money versus replacing the trigger valve. Let me know what you are going to do and I will help you with the removal of the valve.

Posted on Oct 06, 2009

  • 1383 Answers

SOURCE: stanley bostitch double fires. It is an older

You did not list your model number, however most bostitch nailers use the tva6 trigger valve. As this valve wears it will be erratic. Examine the firing pin that makes contact with trigger. If it looks worn or wabbles from side to side, then time to replace. To remove valve first remove trigger by removing roll with 3MM punch. Next remove one or two roll pins just above the valve, also 3mm. With roll pins removed air pressure will pop out valve. Be carefull because valve can come out with force, use glove or rag to catch. Parts available at, or generic valve at Good luck

Posted on Sep 19, 2010

  • 1 Answer

SOURCE: Stanley TR 250 Staple Gun Staple cartridge problem

very simple to fix it 1 pull the trigger all the way out 2 there is a little piece of metal, pull it all the way out (detach the piece out from the gun) an connect one side of the spring 3 push the piece back on the gun. 4 on the other side of the spring tide a little fishing line 5 pass the fishing line over a small rounded piece and pull it hard 6 finally connect the side of the spring onto a little hock on the base of the trigger

Posted on Apr 21, 2011

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SOURCE: My bostitch compressor staple gun

I ran into the same problem. The way to repair the problem is to disassemble the gun. Start by removing te top of the gun where the exhaust comes out. Under the cap is where the piston is. You need to clean out the cylinder and the piston. Second you need toi take the rear cover off were your air hose connects. Look inside to make sure the inside is clear and clean. Also inside the cap where the exhaust comes out there is a spring loaded piece that is white in color. Make sure it is clean and also clean out the inside of the cap. After I did all that my stapler worked fine. Good luck.

Posted on Feb 03, 2013

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Nailer wont advance the nails then it shoots blank

Try ez test to check for proper operation. Remove nails and air supply, point nose of gun up then down again. The driver should not move from the top of cylinder position. If driver is moving up then down replace the driver oring. If driver oring seems ok then connect air supply and bump fire the nailer without nails against soft wood and door open so that you can see the driver and feeder moving. Bump fire the gun and make sure that the driver is moving all the way back up to top of cylinder and the feeder is moving rapidly back and forward. If movement seems ok then hold the nose down on soft wood and depress and hold the trigger. This will fire the gun but driver will stay at the bottom position and not return until you release the trigger or lift the gun. When holding the gun with the driver down position, no air should leak out the top or bottom of the gun. If air leaks out bottom, replace lower bumper, if air leaks out the top replace the upper bumper. Good luck

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Why doesn't the trigger do anything on my NS289000 framing nailer?

Nailer not firing is caused by lack of lubrication in the headvalve (lube with white grease) or driver stuck/bent (make sure driver moves freely) or safety foot not depressing the firing pin on the trigger valve all the way in. Easy to check. Remove the trigger to expose the firing pin. With no nails in gun, connect air and depress the firing pin with finger all the way in. If the gun fires, adjust the safety foot. If the gun does not fire, lube headvalve and check driver piston stuck. Good luck

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Why does my roofing nail gun jamming, it would fire one nail and the hammer will remain out, so i toke a screw driver and push the hammer back in, and it still did the same thing

Simple test for piston jam. With nails removed and latch open, point nose of gun up then down. If the driver slides up and down in the cylinder as you move the gun, replace the piston oring (test gun for proper operation). If the piston stays in the upper most position as you move gun (push driver to top position), check lower bumper and bottom seal under the bumper (sheet). Replace as needed. If the lower parts are in good condition (good piston oring, lower bumper and sheet) , replace the 3 orings on the feeder piston. Good luck

Dec 03, 2011 | Hitachi NV45AB2S Coil Roofing Nailer

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Does not sink nails

Mis-fire usually happens when the driver does not return to the top of the cylinder. With the driver only partially up, the first nail cannot move into position. Driver not returning to top is caused by bent driver, debris in path of driver, worn piston oring/s, cracked lower bumper or worn seal below the bumper. Remove the head and examine parts and repair/replace as needed. To check If the tip of the driver is broken (with head of gun removed and bumper in place), push the driver all the way down the cylinder, the tip should extend about 1/4 inch past the nose. If the driver extends out too far, the bumper is worn. If the gun is couple of years old, order the oring kit and replace all the orings. Good luck

Oct 26, 2011 | Tools & Hardware - Others

1 Answer

What causes it to shoot a double, or triple nail sometimes?

Make sure that orings are in good shape, lower bumper not cracked, (no leaks and the driver/piston stays at the top position, if piston drops a little or all the way down with no nails in gun, replace piston oring). Also check spring tension for feeder and two check paws in the door (feeder tension should be firm ). Adjust the timing screw up or down one or two turns and test (timing screw at the top of safety foot, head of screw pushes on the firing valve ). Test for lower bumper cracked. Remove nails and leave side door open. Hold the nose of the gun against coiled air hose or thick rubber and press and hold the trigger. The piston will stay down against the bumper until you release the trigger. No air should leak out the driver path. If air leaks past driver suspect bad bumper. Test action of feeder piston. Remove side cover to feed piston and clean debris. With air disconnected, move the feed piston back and forward. There should be a little resistance, if it moves very easy, suspect orings worn. As soon as you connect the air line. the feed piston should move forward with force, note the position of the feeder. Now with air disconnected, place nails on the feeder. The first nail should be well within the path of the driver. If not fully under driver path suspect worn feeder / feeder retainer pin, or debris inside feed piston chamber preventing piston from full forward travel (debris from inside of the gun will enter the feed piston chamber usually broken bits of lower bumper). Replace parts as needed. Good luck with your repair.

May 17, 2011 | Hitachi NV45AB2 Roofing Coil Nailer

1 Answer

Fireing pin moves very slow, it seems to have no power. It comes out slow, I have to push it back inside the gun. It was leaking out the back so I adjusted the cyclinder and now the piston moves too slow...

When you trip the safety and fire the gun, the cylinder drops down into body of gun allowing a rush of air to push piston down with force. If the cylinder fits too tightly in body, it will not open enough to allow full air pressure into cylinder. Remove head and check that the cylinder moves rather easily down then back up (it should travel about 1/4 inch). If is difficult to move the cylinder then remove it and replace all the orings that contact its surface. Also make sure that the outer part of the cylinder is smooth where orings contact. If there are fine scratches, remove them with 400 grit sandpaper. Lube cylinder/orings with silicone paste lube. While cylinder is removed check that lower bumper is in good shape with no missing pieces. For best performance, also replace the three orings on the feed piston. Piston /driver should move down cylinder with only slight pressure yet it should not drop down the cylinder under its own weight. Good luck

Jan 16, 2011 | Hitachi NV45AB2 Roofing Coil Nailer

1 Answer

I am helping a friend that worked on his bike and it now fails to start. He removed the carbs and sprayed carb cleaner around and inside the carbs. He then replaced them and the bike won"t start. It is...

Tim, if your friend has sprayed carb cleaner inside the carbs then maybe the needle in the float chamber is stuck. The needle is brass and has been known to "freeze" when sprayed with carb cleaner.
If the carbs have been removed and have been split apart, the chance are they need rebalancing.
I would remove carbs, empty float bowl, spray WD40 around the needle in float bowl, make sure it moves freely whe the carb is held right way up.
Put everything back together, balance them and try again.

Good luck!

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2 Answers

Bostitch n80 does not feed nails

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Aug 13, 2009 | Stanley Bostitch Coil Framing Nailer

1 Answer

My nail gun hitachi nr83a2 only fires a nail half way

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the pison bumper should not be attached to the driver, if the bumper is moving around inside the gun i suggest checking to make sure it was properly seated when the gun was reassembled. if it was, i suggest ordering a new bumper.

a cracked bumper will usually cause a broken driver.

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