Porter Cable Fn250sb Not Feeding Nails Properly

Nailer: Nails Won't Feed

If nails won't feed in your nailer, this can be frustrating, but it might actually be an easy fix that you can do yourself. First, check the spring, pin, pusher, magazine, hub, and nails. Once you know which part needs to be fixed, read our repair guide for helpful tips. Refer to your owner's manual for information on your model.

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Make sure you are using compatible nails with your nail gun. Using the wrong nails will jam up the magazine not allowing the nails to be feed.

Make sure you are using compatible nails with your nail gun. Using the wrong nails will jam up the magazine not allowing the nails to be feed.

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Pins

A broken or worn pin will can prevent the nails from feeding. To inspect and replace the pin, remove the magazine from the nail gun and the spring guard. Remove the shaft ring and push out the pin with a screw driver or small punch. Remove the feeder spring. Inspect the pin for any signs of damage and replace it. Install the new pin with pliers through the spring and make sure to clip the legs on the feeder spring in. Reinstall the feeder shaft ring and reattach the spring guard. Reinstall the ring between the pusher and the body of the nail gun.

A broken or worn pin will can prevent the nails from feeding. To inspect and replace the pin, remove the magazine from the nail gun and the spring guard. Remove the shaft ring and push out the pin with a screw driver or small punch. Remove the feeder spring. Inspect the pin for any signs of damage and replace it. Install the new pin with pliers through the spring and make sure to clip the legs on the feeder spring in. Reinstall the feeder shaft ring and reattach the spring guard. Reinstall the ring between the pusher and the body of the nail gun.

Springs

A worn or broken spring can impact the operation of nails being feed. To replace a broken spring slide the cover of the magazine all the way back and remove the piece that prevents the cover from being removed when you are reloading nails. Remove the cover. Pull the pusher, hub (Note the hub is also called a stopper on some models) and spring out from the magazine. If the spring is broken or weak install a new spring into the magazine. Install the hub on the end of the spring and attach the pusher. When installing the pusher into the magazine make sure it locks into place and do not bump it as it can cause the pusher to fly out. Slide the cover back into the magazine and attach the piece that prevents the cover from coming out of the magazine. Close the cover.

A worn or broken spring can impact the operation of nails being feed. To replace a broken spring slide the cover of the magazine all the way back and remove the piece that prevents the cover from being removed when you are reloading nails. Remove the cover. Pull the pusher, hub (Note the hub is also called a stopper on some models) and spring out from the magazine. If the spring is broken or weak install a new spring into the magazine. Install the hub on the end of the spring and attach the pusher. When installing the pusher into the magazine make sure it locks into place and do not bump it as it can cause the pusher to fly out. Slide the cover back into the magazine and attach the piece that prevents the cover from coming out of the magazine. Close the cover.

Hubs

The hub attaches to the feeder and spring. If it is broken the spring will not be able to keep pressure on the feeder to keep feeding the nails. To replace a broken hub slide the cover of the magazine all the way back. Remove the piece that prevents the cover from being removed from the magazine then continue to remove the cover. Pull the pusher out from the magazine and separate it from the hub. Install a new hub if needed. Reattach the pusher and reassemble back into the magazine housing till it locks into place. Do not bang it around as the pusher can come loose and fly out. Slide the cover back into the magazine. Reinstall the piece that prevents the cover from being removed from the magazine and make sure to line up the tab and tighten it down. Slide the cover all the way in....

The hub attaches to the feeder and spring. If it is broken the spring will not be able to keep pressure on the feeder to keep feeding the nails. To replace a broken hub slide the cover of the magazine all the way back. Remove the piece that prevents the cover from being removed from the magazine then continue to remove the cover. Pull the pusher out from the magazine and separate it from the hub. Install a new hub if needed. Reattach the pusher and reassemble back into the magazine housing till it locks into place. Do not bang it around as the pusher can come loose and fly out. Slide the cover back into the magazine. Reinstall the piece that prevents the cover from being removed from the magazine and make sure to line up the tab and tighten it down. Slide the cover all the way in.

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Pushers

To replace a broken pusher, slide the cover of the magazine all the way back. Remove the piece that prevents the cover from being removed from the magazine. Remove the cover. Pull the pusher out from the magazine and separate it from the hub and spring. Inspect it for any signs of wear or damage that will impact its ability to move freely inside the magazine. Install a new pusher into the hub and install into the spring. Reinstall into the magazine till it locks into place. Be careful not to bump it or the pusher can fly out. Reinstall the cover into the magazine. Reinstall the piece that prevents the cover from being removed from the magazine and make sure to line up the tab. Tighten the screw down once it is lined up. Slide the cover all the way in.

To replace a broken pusher, slide the cover of the magazine all the way back. Remove the piece that prevents the cover from being removed from the magazine. Remove the cover. Pull the pusher out from the magazine and separate it from the hub and spring. Inspect it for any signs of wear or damage that will impact its ability to move freely inside the magazine. Install a new pusher into the hub and install into the spring. Reinstall into the magazine till it locks into place. Be careful not to bump it or the pusher can fly out. Reinstall the cover into the magazine. Reinstall the piece that prevents the cover from being removed from the magazine and make sure to line up the tab. Tighten the screw down once it is lined up. Slide the cover all the way in.

Magazine

The magazine holds the nails in place to be fired into material. If the magazine is damaged it can pinch onto the nails keeping them in a stationary position not allowing them to feed. Examine your magazine for any signs of damage such as bends or dents that could pinch onto the nails preventing them from sliding freely inside the magazine. Magazines can be easily damaged from mishandling the nail gun. To replace a damaged magazine remove the screws securing it to the nail gun and install a new magazine and install nails.

The magazine holds the nails in place to be fired into material. If the magazine is damaged it can pinch onto the nails keeping them in a stationary position not allowing them to feed. Examine your magazine for any signs of damage such as bends or dents that could pinch onto the nails preventing them from sliding freely inside the magazine. Magazines can be easily damaged from mishandling the nail gun. To replace a damaged magazine remove the screws securing it to the nail gun and install a new magazine and install nails.

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Source: https://www.ereplacementparts.com/repair-center/power-tool/nailer/nails-won't-feed/

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