Bostitch 850S4 Operation and Maintenance Manual

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Bostitch 850S4 Stapler Specification

The Bostitch 850S4 Stapler is a robust pneumatic stapler designed for heavy-duty applications in construction and industrial settings. It is engineered to drive 16-gauge staples with a crown width of 1 inch and accommodates staple lengths ranging from 1 to 2 inches, making it ideal for tasks such as sheathing, roof decking, and furniture assembly. The stapler is powered by compressed air, requiring an operating pressure between 70 and 120 PSI, which ensures consistent driving power for efficient and reliable performance.

Constructed with a magnesium housing, the Bostitch 850S4 is both lightweight and durable, reducing user fatigue while enhancing tool longevity. The tool features an adjustable depth control for precise staple placement, allowing users to customize the driving depth to suit various materials and applications. The stapler's sequential trip trigger provides added safety and control, minimizing the risk of accidental firing.

The rear exhaust directs air away from the user, enhancing comfort during extended use, while the over-molded rubber grip ensures a secure and comfortable hold. With a magazine capacity of up to 160 staples, the tool supports extended operation without frequent reloading, increasing productivity on the job site. The quick-release magazine latch enables easy and rapid reloading, minimizing downtime.

Designed for professional use, the Bostitch 850S4 Stapler combines power, precision, and durability, making it a valuable tool for contractors and builders. Its efficient design and advanced features contribute to its reputation as a reliable and high-performance stapler in demanding environments.

Bostitch 850S4 Stapler F.A.Q.

How do I load staples into the Bostitch 850S4 Stapler?

To load staples, ensure the stapler is disconnected from the air supply. Pull back the magazine latch, insert the staples into the magazine, and slide the magazine back until it locks in place.

What should I do if the stapler jams?

Disconnect the stapler from the air supply, open the magazine, and remove any jammed staples. Check for obstructions in the driver channel, remove them, and reload the staples.

How often should I perform maintenance on the Bostitch 850S4 Stapler?

Regular maintenance should be performed every 5,000 staples or as needed. This includes cleaning the feed system, checking for wear, and lubricating moving parts.

What type of lubrication should be used for the stapler?

Use a pneumatic tool oil specifically designed for air tools. Apply a few drops into the air inlet before each use to ensure proper lubrication.

Why is the stapler not firing staples consistently?

This could be due to insufficient air pressure, a jam, or worn parts. Check the air pressure, clear any jams, and inspect parts like the driver blade for wear and replace if necessary.

Can the Bostitch 850S4 Stapler be used with different staple sizes?

The Bostitch 850S4 is designed for specific staple sizes. Refer to the manual for compatible staple specifications to ensure proper functioning.

What safety precautions should I take when using the Bostitch 850S4 Stapler?

Always wear safety goggles, ensure the work surface is stable, keep hands clear of the stapling area, and disconnect the air supply before performing maintenance.

How can I adjust the depth of drive on the Bostitch 850S4 Stapler?

Adjust the depth of drive by using the depth adjustment knob. Rotate it to increase or decrease the penetration of the staple into the material.

What should I do if the stapler is leaking air?

Check for worn or damaged seals and O-rings. Replace them as necessary. Also, ensure that all connections are tight and secure to prevent air leaks.

How do I store the Bostitch 850S4 Stapler when not in use?

Disconnect the air supply, remove any remaining staples, and store the stapler in a cool, dry place. Keep it out of direct sunlight to prevent damage to plastic and rubber components.