This operation and maintenance manual covers the Komatsu WA120-3 wheel loader, specifically for serial numbers WA120-3MC-A31001 and up. Designed for robust performance in demanding environments, the WA120-3 is engineered for reliability and efficient operation. Its construction emphasizes durability and ease of maintenance, making it a dependable choice for various industrial and construction applications. This manual serves as a comprehensive guide to ensure optimal use and longevity of the machine.

The purpose of this manual is to provide essential information for the safe and effective operation and maintenance of the Komatsu WA120-3. It details crucial procedures for daily checks, periodic inspections, and routine maintenance to prevent breakdowns and ensure peak performance. Adhering to the guidelines within this document is vital for all operators and maintenance personnel. This manual should remain with the machine at all times to facilitate immediate access to critical operational and service information.