Some models are compatible with industrial-grade heavy-duty staples, ideal for denser materials. If it is running freely, then the problem could be due to:Īlways ensure you utilize the correct staple for your gun as described by the manufacturer. If this happens, first check the hammer head for blockages, as described in ‘ Misfiring or Clogged Hammer’ above. For starters, it makes your project appear messy and unprofessional - additionally, it can mean inadequate bonding. Staples not penetrating deep enough into your target material is a serious annoyance. Attach the new spring - one end to the pusher head and another to the casing.įor many machines, especially budget manual models, staple gun spring replacement isn’t cost-effective - it’s much simpler to purchase a new unit. Some units will require the removal of the cartridge slider to gain access to the spring connectors.Ĥ. Unhook the opposite end of the spring from the gun casing - again, either with pliers or a screwdriver as required. Depending on your model, this can involve simply pulling it out with a pair of needle-nose pliers, or removing a small screw.ģ. Unhook the spring from the pusher head - with no tension load. Open the stapler to reveal the spring mechanism.Ģ. Locate the correct part from the manufacturer, and follow these steps on how to fix a staple gun spring.ġ. If the spring is damaged or faulty, a replacement will be necessary. Open up your stapler and check the condition of the spring - it should push firmly on the cartridge, bounce back freely when pulled and released, and show no indications of cracks, breaks, or rust. Typical signs of this issue include no staples being delivered - despite the hammer moving freely - bent fasteners or recurrent blockages.

If the internal spring is damaged, oxidized, or compromised - it will not have sufficient force to push the staples into the dispensing head or secure them in the correct position.

Powershot pro electric stapler manual