Maintenance & Lubrication

Service

Preventive maintenance performed ! WARNING by unauthorized 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 Bosch Factory Service Center or Authorized Bosch Service Station.

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 Bosch replacement brushes specially

Brush

Brush

Terminal

Figure 1. Motor Brush

designed for your tool should be used.

Motor Brush Replacement

To Inspect or Replace Brushes:

1.Unplug the saw.

!WARNING The brush cap is spring loaded by the brush assembly.

2.Remove the brush cap on the motor using a wide flat blade screwdriver.

3.Pull out the brush (Figure 1). Repeat for the oppo- site side.

Driven Pulley

Drive Pulley

Drive Belt

NOTE: If installing the existing brush or brushes, make sure the brush goes in the same way it came out. Otherwise a break-in period will occur that will reduce motor performance and increase brush wear.

4.Inspect brushes for wear. On the wide flat side of brush is a wear limit line. If the brush contact face is at or beyond (no line visible) the limit replace brushes as a set.

5.Install new brush. The two (2) tabs on the brush terminal go in the same hole the carbon part fits into.

6.Tighten the brush cap but do not overtighten.

Drive Belt

The drive belt is a normal maintenance part and should be inspected periodically for wear. If the drive belt shows signs of drying out, cracking or tearing, it should be replaced. If the drive belt will not track properly or comes off the pulleys, it should be replaced.

Installing new drive belt:

1.Loosen the two screws and remove the drive belt cover.

2.Cut and remove the worn drive belt (Figure 2). Before installing the new drive belt, clean both pulleys thoroughly.

Figure 2. Belt Changes

3.First place the new drive belt onto the drive pulley, then rotate clockwise while pushing the belt onto the driven pulley.

4.Reinstall the drive belt cover and securely tighten screws.

Cleaning

To avoid accidents, always discon- ! WARNING nect the tool from the power supply

before cleaning or performing any maintenance. The tool may be cleaned most effectively with com- pressed air. Always wear safety goggles when clean- ing 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.

Check regularly to make sure the lower guard and all moving parts are working properly.

Remove accumulated sawdust from working parts by blowing with compressed air or wiping with a damp cloth.

Certain cleaning agents and sol- ! WARNING vents damage plastic parts. Some

33.

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Bosch Power Tools 4212L manual Maintenance & Lubrication, Service, Carbon Brushes, Drive Belt, Cleaning
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4212L specifications

The Bosch Power Tools 4212L is a highly innovative and versatile tool that caters to the needs of both amateur and professional craftsmen. Designed for precision and efficiency, it stands out with its robust features and advanced technologies, making it an essential addition to any toolbox.

One of the main features of the 4212L is its powerful 15-amp motor, which delivers a remarkable 4,500 RPM. This power allows users to tackle various materials with ease, whether it’s cutting through hardwood, laminate, or even metal. The tool’s speed settings are adjustable, offering versatility in applications and allowing users to customize the tool’s performance based on the specific material being worked on.

The Bosch 4212L also incorporates a high-quality laser guide system that enhances precision. This technology ensures that users have a clear line of sight for accurate cuts, reducing the chances for errors. The integrated laser is easily adjustable, allowing for quick alignment and setup, which saves time and enhances efficiency on the job site.

Another key characteristic of the Bosch 4212L is its dual bevel feature. This allows for compound miter cuts up to 45 degrees in both directions, expanding the range of cuts that can be made. This feature is particularly useful for crown molding and other intricate trim work, providing users with the flexibility needed for more complex projects.

In terms of safety, Bosch has included various design features to protect users during operation. The 4212L is equipped with a soft start feature, which minimizes kickback when the tool is powered up. Additionally, the electric brake works to stop the blade quickly after the trigger is released, enhancing safety during operation.

The overall build quality of the Bosch 4212L reflects durability and reliability. Its sturdy construction is designed to withstand heavy use, ensuring longevity even in demanding work environments. The tool also features an ergonomic handle design, providing comfort and reducing fatigue, which is crucial during prolonged use.

In summary, the Bosch Power Tools 4212L brings together power, precision, and safety in a single, user-friendly package. With its impressive motor, adjustable laser guide, dual bevel capabilities, and safety features, it stands out as a top choice for anyone seeking a high-performance cutting tool. Whether you are a DIY enthusiast or a seasoned professional, the Bosch 4212L is engineered to meet your cutting needs efficiently and effectively.
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