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Lower guard should be retracted manually only for special cuts such as “Pocket Cuts” and “Compound Cuts”. Raise lower guard by Lower Guard Lift Lever. As soon as blade enters the material, lower guard must be released. For all other sawing, the lower guard should operate automatically.

Always observe that the lower guard is covering the blade before placing saw down on bench or floor. An unprotected, coasting blade will cause the saw to walk backwards, cutting whatever is in its path. Be aware of the time it takes for the blade to stop after switch is released.

NEVER hold piece being cut in your hands or across your leg. It is important to support the work properly to minimize body exposure, blade binding, or loss of control.

Hold tool by the insulated gripping surfaces when performing an operation where the cutting tool may contact hidden wiring or it own cord. Contact with a "live" wire will also make exposed metal parts of the tool “live” and shock the operator.

When ripping always use a rip fence or straight edge guide. This improves accuracy of cut and reduces the chance for blade binding.

Always use blades with correct size and shape (diamond vs. round) arbor holes. Blades that do not match the mounting hardware of the saw will run eccentrically, causing loss of control and will not allow proper vari-torque engagement.

Never use damaged or incorrect blade washers or bolts. The blade washers and bolt were specially designed for your saw, for optimum performance and safety of operation. The blade washers and the bolt on your saw have been designed to work as a “VARI- TORQUE CLUTCH”. Understand the operation and settings of the VARI-TORQUE CLUTCH, because the proper setting of the CLUTCH, combined with firm handling of the saw will allow you to control KICKBACK.

Do not run the saw while carrying it at your side. Lower guard may be opened by a contact with your clothing. Accidental contact with the spinning saw blade could result in serious personal injury.

Depending upon use, the switch may not last the life of the saw. If the switch should fail in the “OFF” position, the saw may not

start. If it should fail while the saw is running, the saw may not shut off. If either occurs, unplug the saw immediately and do not use until repaired.

This circular saw should not be mounted to a table and converted to a table saw. Circular saws are not designed or intended to be used as table saws.

CAUSES AND OPERATOR PREVENTION OF

KICKBACK:

Kickback is a sudden reaction to a pinched, bound or misaligned saw blade, causing an uncontrolled saw to lift up and out of the workpiece toward the operator.

VARI-TORQUE

CLUTCH

When the blade is pinched or bound tightly by the kerf closing down, the blade stalls and the motor reaction drives the unit rapidly back toward the operator.

If the blade becomes twisted or misaligned in the cut, the teeth at the back edge of the blade can dig into the top surface of the wood causing the blade to climb out of the kerf and jump back toward the operator.

Kickback is the result of tool misuse and/or incorrect operating procedures or conditions and can be avoided by taking proper precautions as given below:

Maintain a firm grip with both hands on the saw and position your body and arm to allow you to resist KICKBACK forces. KICKBACK forces can be controlled by the operator, if proper precautions are taken.

When blade is binding, or when interrupting a cut for any reason, release the trigger and hold the saw motionless in the material until the blade comes to a complete stop. Never attempt to remove the saw from the work or

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Bosch Power Tools 1658 manual Causes and Operator Prevention Kickback
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1658 specifications

Bosch Power Tools has long been a renowned name in the world of power tools, and among its diverse offerings, the Bosch 1658 model stands out for both professionals and DIY enthusiasts alike. This versatile tool is designed to provide superior performance and reliability in various applications, making it a go-to choice for many.

The Bosch 1658 is an advanced angle grinder known for its exceptional power and efficiency. One of its main features is the robust motor that delivers high torque and speed, enabling it to handle even the toughest materials with ease. With a no-load speed of 11,500 RPM, this tool can cut, grind, and polish swiftly, which enhances productivity in various tasks.

In addition to its powerful motor, the Bosch 1658 incorporates advanced technologies designed to improve user experience. One significant feature is the Constant Electronic system, which ensures consistent speed under load, maintaining optimal performance even when working on demanding tasks. This technology not only enhances control but also prolongs the life of the tool.

The design of the Bosch 1658 emphasizes ergonomics and user comfort. It boasts a slim grip that allows for better handling and reduced fatigue during extended use. The auxiliary handle is adjustable and designed to provide a stable grip, offering the user flexibility in positioning for various angles and applications.

Safety is also a top priority in the design of the Bosch 1658. The tool is equipped with a safety guard that can be adjusted without the need for tools, providing protection while allowing for quick changes in application. Additionally, it features a spindle lock for easy disc changes, enhancing efficiency and user safety.

The Bosch 1658 is ideal for a broad range of applications including cutting, grinding, and polishing in metalworking, construction, and repair projects. Its robust build and powerful performance make it suitable for both heavy-duty tasks and intricate work, showcasing its versatility.

In summary, the Bosch 1658 Power Tool combines powerful motor performance, advanced electronic features, ergonomic design, and safety mechanisms, making it an essential addition to any toolkit. Whether you are a professional tradesperson or a dedicated DIYer, this angle grinder meets the demands of various projects, ensuring reliability and efficiency on every job.
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