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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, remove battery pack from 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.

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 pull the saw backward while the blade is in motion or KICKBACK may occur. Investigate and take corrective action to eliminate the cause of blade binding. Wet lumber, green lumber or pressure treated lumber require special attention during cutting operation to prevent KICKBACK. Avoid cutting nails. Inspect for and remove all nails from lumber before cutting.

When restarting a saw in a workpiece, center the saw blade in the kerf and check that saw teeth are not engaged into the material. If saw blade is binding, it may walk up or KICKBACK from the workpiece as the saw is restarted.

Support large panels to minimize the risk of blade pinching and KICKBACK. Large panels tend to sag under their own weight. Supports must be placed under the panel on both sides, near the line of cut and near the edge of the panel. See “Cutting Large Sheets” in this manual.

Do not use dull or damaged blade. Unsharpened or improperly set blades produce narrow kerf causing excessive friction, blade binding and KICKBACK.

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Bosch Power Tools 1660, 1662 manual Causes and Operator Prevention Kickback
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1660, 1662 specifications

Bosch is renowned for its range of high-quality power tools, and the Bosch Power Tools 1662 and 1660 models are no exceptions. Designed for both professional tradespeople and DIY enthusiasts, these power tools combine cutting-edge technology with user-friendly features to deliver exceptional performance and reliability.

The Bosch 1662 is known for its robust design and versatility. It is a corded power tool that provides consistent power for various applications, enabling users to tackle heavy-duty tasks with ease. One of its standout features is the adjustable speed control, which allows operators to customize the tool's RPM based on the specific material being worked on. This adaptability makes it suitable for a wide range of applications, from drilling into wood to working with metal.

The 1662 also incorporates a built-in electronic feedback system that maintains speed under load, ensuring smooth operation and preventing stalling during demanding tasks. Additionally, it features an ergonomic design with a soft-grip handle, providing comfort during prolonged use. This model is also equipped with an integrated spindle lock for easy bit changes, enhancing efficiency and convenience.

Turning to the Bosch 1660, this model shares many of the same qualities but boasts its unique set of specifications that cater to specific needs. The 1660 is particularly favored for its lightweight design, making it an excellent choice for users who prioritize portability. Despite its lighter weight, the 1660 does not compromise on power, offering sufficient torque for various drilling, chiseling, and fastening tasks.

Like its counterpart, the 1660 features variable speed control, allowing users to fine-tune their drilling performance. Its durable construction ensures longevity, while the combination of vibration control technology enhances user comfort, reducing fatigue during extended use.

Both models are equipped with high-quality motors that deliver impressive power while maintaining energy efficiency. Bosch's commitment to innovation is evident in the features and technology embedded in these models, ensuring that users can rely on their tools for professional-grade results. Overall, whether you choose the 1662 or the 1660, both power tools exemplify Bosch's dedication to quality and performance, making them excellent additions to any toolkit.
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