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BLADE MUST BE IN

ALIGNMENT WITH NAIL

firmly, squeeze trigger and slowly push the saw forward. To make a hole, cut from inside the circle; To make wheels or discs, cut from the outside.

Cutting Tip: Cut slowly so the blade will stay straight in the cut. Place small wedges in the cut as shown in Fig. 13, to keep the inner circle from spreading when near the end of the cut.

FIG. 14

NAIL

Maintenance

Service

Preventive maintenance ! WARNING performed by unauth-

orized personnel may result in misplacing of internal wires and components which could cause serious hazard. We recommend that all tool service be performed by a Skil Factory Service Center or Autho- rized Skil Service Station.

TOOL LUBRICATION

Your Skil tool has been properly lubricated and is ready to use. It is recommended that tools with gears be regreased with a special gear lubricant at every brush change.

CARBON BRUSHES

The brushes and commutator in your tool have been engineered for many hours of dependable service. To maintain peak efficiency of the motor, we recommend every two to six months the brushes be examined. Only genuine Skil replacement brushes specially designed for your tool should be used.

BEARINGS

After about 300-400 hours of operation, or at every second brush change, the bearings

should be replaced at Skil Factory Service Center or Authorized Skil Service Station. Bearings which become noisy (due to heavy load or very abrasive material cutting) should be replaced at once to avoid overheating or motor failure.

Cleaning

!WARNING To avoid accidents always disconnect the tool from

the power supply before cleaning or performing any maintenance. The tool may be cleaned most effectively with compressed dry air. Always wear safety goggles when cleaning tools with compressed air.

Ventilation openings and switch levers must be kept clean and free of foreign matter. Do not attempt to clean by inserting pointed objects through openings.

!CAUTION Certain cleaning agents and solvents damage

plastic parts. Some of these are: gasoline, carbon tetrachloride, chlorinated cleaning solvents, ammonia and household detergents that contain ammonia.

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Skil 4280, 4380, 4240 manual Maintenance, Cleaning, Tool Lubrication, Carbon Brushes, Bearings
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4280, 4380, 4240 specifications

Skil has long been a trusted name in power tools, and their range of circular saws has garnered attention for their exceptional performance, durability, and user-friendly features. The Skil 4240, 4380, and 4280 models exemplify this tradition, each offering a unique set of characteristics that cater to various cutting needs.

The Skil 4240 is known for its lightweight design, making it perfect for users who require portability without sacrificing power. This saw comes equipped with a potent motor that delivers a blade speed of up to 5,200 RPM, allowing it to tackle tough materials with ease. One of the standout features of the 4240 is its innovative laser guide system, which offers precision cutting by projecting a line directly onto the material. This feature is particularly beneficial for users who demand accuracy in their projects. Along with a depth adjustment feature, the 4240 allows for bevel cuts up to 45 degrees, enhancing its versatility for a variety of applications.

Moving on, the Skil 4380 introduces additional features that cater to those tackling heavier-duty projects. Similar to its counterpart, the 4380 boasts a powerful motor and a high RPM rate, but it also incorporates a built-in dust blower that keeps the cutting line clear of debris, ensuring enhanced visibility and cleaner cuts. The 4380 also features an ergonomic design that improves user comfort, allowing for prolonged use without fatigue. Its heavy-duty aluminum base adds strength, ensuring durability across various job sites.

The Skil 4280 model enhances the user experience further, integrating advanced technologies for superior performance. This model includes a soft-start feature that gradually ramps up the motor speed, reducing the initial torque, which helps prevent kickback. The 4280's superior stability and balanced weight distribution enable precise control, especially in intricate cuts. Additionally, it has a quick-release blade change system, allowing users to switch out blades effortlessly without the need for extra tools.

In conclusion, the Skil 4240, 4380, and 4280 circular saws cater to a diverse audience by blending power, precision, and ease of use. Each model introduces unique features and technologies designed to provide superior cutting performance across a range of materials and applications. Whether you are a DIY enthusiast or a professional tradesperson, these saws are poised to deliver exceptional results on every project.
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