This manual provides safety instructions, specifications, operation steps, and maintenance guidance for the Makita KS521D cordless dust circular saw.
The Makita KS521D is a 125 mm cordless dust circular saw powered by a 14.4 V DC brushless motor. It features a high‑capacity 3.0 Ah lithium‑ion battery, a fast charger (DC18RA), and a compact design for efficient cutting of various materials.
The manual details important safety precautions, proper use of protective equipment, routine maintenance such as carbon‑brush inspection, and a list of standard accessories. Following the guidelines helps ensure safe, reliable operation and prolongs the tool’s service life. This manual is written in Japanese.
| Battery | Lithium‑ion BL1430, 3.0 Ah |
|---|---|
| Voltage | 14.4 V DC |
| No‑load speed | 4,300 rpm |
| Blade diameter | 125 mm outer × 20 mm inner |
| Maximum cutting depth | 37 mm |
| Weight (with battery) | 2.7 kg |
| Fast charger model | DC18RA |
It uses a Makita lithium‑ion battery, model BL1430, with a capacity of 3.0 Ah.
The tool can cut up to a maximum depth of 37 mm.
Inspect the carbon brushes regularly and replace them when they reach the wear‑limit line, using Makita‑specified brushes.