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Factory workshop manuals
Komatsu Repair Manuals
- Instant PDF download
- OEM repair procedures
- Wiring diagrams & torque specs
Komatsu, Japan's construction and mining equipment giant founded in 1921, designs and builds many of the diesel engines used in its own machines. This page offers workshop, service and repair manuals for Komatsu engines fitted to excavators, bulldozers, wheel loaders and haul trucks.
Komatsu Ltd. was founded in 1921 in the city of Komatsu, Ishikawa Prefecture, Japan, where the company's name and main plants still originate. Growing from mining machinery into construction equipment, Komatsu became one of the world's two largest makers of earthmoving machines, with a reputation for quality manufacturing and in-house component production.
Komatsu is known for heavy-duty engineering across bulldozers, hydraulic excavators, wheel loaders and rigid dump trucks, and for building its own diesel engines rather than relying entirely on outside suppliers. Its engines are respected for durability in construction, mining, quarrying and forestry, where machines run long hours in severe conditions. Beyond machine engines, Komatsu power units are also applied in generators and industrial installations, extending the value of its service documentation well beyond the yellow iron on construction sites.
The manuals on this page cover Komatsu engines and equipment in depth, including mechanical overhaul, fuel injection and emission control systems, cooling and lubrication, hydraulic circuits, electrical systems with wiring diagrams, torque specifications and diagnostic procedures. Scheduled maintenance programs help keep machines available and safe on site. Engine series such as the 107 and 108 families documented in the listings show the continuity of design that lets older machines remain supportable for decades.
These factory documents are intended for equipment owners, contractor maintenance teams, independent heavy-equipment technicians and engine rebuilders. With correct specifications at hand, Komatsu machines can be serviced and repaired to manufacturer standards and kept productive for decades.
Komatsu Models
208 models-
Komatsu Skid Steer Loaders
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Komatsu SK 1026 Models
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Komatsu Wheel Loaders
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Komatsu 108 Series
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Komatsu 4D106
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Komatsu S4D106
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Komatsu 108
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Komatsu PC400 7
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Komatsu 4D98E
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Komatsu 108 2
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Komatsu 102E Series
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Komatsu 3D82AE Series
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Komatsu 3D84E Series
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Komatsu 3D88E Series
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Komatsu 4D106 Series
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Komatsu 4D88E Series
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Komatsu 4D98E Series
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Komatsu S4D106 Series
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Komatsu S4D84E Series
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Komatsu S4D98E Series
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Komatsu 4D98
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Komatsu 3D82AE
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Komatsu 3D84E
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Komatsu 3D88E
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Komatsu 4D88E
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Komatsu S4D84E
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Komatsu 110 Series
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Komatsu SAA6D125E-5
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Komatsu DCA Series
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Komatsu Denyo
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Komatsu Generators
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Komatsu Home and Garden
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Komatsu Power Equipment
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Komatsu Material Handling
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Komatsu 95 3
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Komatsu Yanmar
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Komatsu WA 150 Models
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Komatsu SA6D125E-3
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Komatsu SAA6D125E-3
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Komatsu 102-1
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Komatsu 102-2
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Komatsu SER.
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Komatsu 102 Series
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Komatsu 125E-5
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Komatsu 110
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Komatsu 12V140E-3 Engine
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Komatsu 4D94E
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Komatsu SA12V140Z-1
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Komatsu 170 3
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Komatsu 95E-5
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Komatsu SK 1020 Models
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Komatsu S6D140-2
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Komatsu SA6D140-2
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Komatsu 108-2 Series
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Komatsu PC Models
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Komatsu 114
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Komatsu 102
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Komatsu 105
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Komatsu 95
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Komatsu 125
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Komatsu 102 2
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Komatsu 102 E
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Komatsu 102 1
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Komatsu 102 E 1
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Komatsu 108 1
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Komatsu 114 3
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Komatsu 114 E 1
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Komatsu 125 2
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Komatsu 125 3
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Komatsu 14 3
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Komatsu 140 2
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Komatsu 140 3
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Komatsu 140 E 5
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Komatsu 155 4
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Komatsu 170 2
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Komatsu 170 E 5
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Komatsu 3 D 4 D S 4 D
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Komatsu 4 FA 1
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Komatsu 4 FE 1
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Komatsu 60125 2
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Komatsu 72 2
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Komatsu 74 E
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Komatsu 75 2
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Komatsu 78 1
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Komatsu 84 2
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Komatsu 94 98
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Komatsu 95 1
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Komatsu 95 2
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Komatsu 95 E 5
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Komatsu 98 E
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Komatsu 98 E 5
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Komatsu 98 E 6
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Komatsu H 20
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Komatsu KDC 410
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Komatsu KDC 610
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Other Komatsu
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Komatsu WB Models
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Komatsu KDC 614
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Komatsu Series Manuals
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Komatsu N 855
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Komatsu 150 A
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Komatsu 150 FA
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CD Series
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D Series
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TD Series
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Komatsu 210M
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Komatsu 330M
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Komatsu 530M
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Komatsu 630E
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Komatsu 730E
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Komatsu 830E
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Komatsu 830E 1AC
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Komatsu 830E AC
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Komatsu 860E 1K
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Komatsu 860E 1KT
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Komatsu 930E
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Komatsu 930E 2
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Komatsu 930E 4SE
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Komatsu 960E 1
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Komatsu HA250
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Komatsu HA250 1
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Komatsu HA270
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Komatsu HA270 1
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HD Models
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HM Models
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Other Komatsu
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Other Komatsu
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PC Models
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H Models
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PW Models
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Komatsu 850 B
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Komatsu 675
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Komatsu 830 B
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Komatsu 830 C
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Komatsu 850 C
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Komatsu 870 B
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Other Komatsu
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Komatsu 870 C
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Komatsu GD 555
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Other Komatsu
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Other Komatsu
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Komatsu Series Manuals
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Komatsu SK 815 Models
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WD Series
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Galeo
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Komatsu 20 F
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Komatsu 60 E
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Komatsu W 90 3
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Komatsu WA 100 Models
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Komatsu WA 120 Models
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Komatsu WA 1200 Models
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Komatsu WA 180 Models
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Komatsu WA 200 Models
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Komatsu WA 250 Models
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Komatsu WA 270 Models
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Komatsu WA 30 Models
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Komatsu WA 300 Models
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Komatsu WA 320 Models
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Komatsu WA 350 1
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Komatsu WA 380 Models
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Komatsu WA 430 Models
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Komatsu WA 400 Models
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Komatsu WA 420 Models
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Komatsu WA 450 Models
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Komatsu WA 470 Models
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Komatsu WA 480 Models
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Komatsu WA 50 Models
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Komatsu WA 600 Models
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Komatsu WA 500 Models
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Komatsu WA 65 Models
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Komatsu WA 70 Models
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Komatsu WA 800 Models
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Komatsu WA 80 Models
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Komatsu WA 700 Models
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Komatsu WA 90 Models
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Other Komatsu
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Komatsu WA 900 Models
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BX Series
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AE Series
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AM Series
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CX Series
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FB Series
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FBRJ Models
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Other Komatsu
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Other Komatsu
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FD Series
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960E-1
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SK1020-5
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SK714-5
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D85EX-15
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D65E-12
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FG Series
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D155AX-5
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Komatsu 450FXL 1
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D31EX-21
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PC400-7
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D65EX-15
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D41E-6
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D31E-20
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D575A-2
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SK815-5
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860E-1Kt
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Other Komatsu
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Other Komatsu
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D20A-6
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Bulldozer
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WH Series
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EG Series
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vendorKomatsuKomatsu WA450-3MC WA450-3 Avance Plus Wheel Loader Service Repair Workshop...🏷️ Basic Information Identification Make: Komatsu Model: WA450-3MC WA450-3 Avance Plus Model Variant: WA450-3MC (Material Handler), WA450-3 Avance Plus Production Years: Serial numbers A31001 and up & A35001 and up Vehicle Type: Wheel Loader Special Designation: Material Handler 👋 Introduction...
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vendorKomatsuKomatsu FB-10/13/15/18/RL-RS-RJ-RJW Service Shop Manual Forklift Workshop Repair Book🏷️ Basic Information Identification Make: Komatsu Model: FB-10/13/15/18 Model Variants: FB10RL, FB13RL, FB15RL, FB18RL-12, FB10RS, FB13RS, FB15RS, FB18RS-12, FB15RJ, FB18RJ-12, FB15RJW, FB18RJW-12 Lift Truck Type: Electric Reach Truck Production Years Covered: N/A - manual covers multiple generations/versions 👋 Introduction Target...
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vendorKomatsuKomatsu WA700-3 WA 700 Avance Wheel Loader Service Repair Workshop...🏷️ Basic Information Identification Make: Komatsu Model: WA700-3 Avance Model Variant: WA700-3D Production Years: N/A - exact years not specified; serial numbers 50001 and up Generation: 3 👋 Introduction Market Position Target Audience: Service technicians and DIY owners of Komatsu...
- Regular price
- $16.99
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- $16.99
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vendorKomatsuKomatsu WA900-3LC WA 900 Avance Wheel Loader Service Repair Workshop...🏷️ Basic Information Identification Make: Komatsu Model: WA900-3LC Avance Model Variant: WA900-3LC Avance Production Years: N/A - not specified for this model 👋 Introduction Market Position Target Audience: Large-scale mining, quarry, and heavy construction operations Competitive Advantage: High productivity with...
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- $16.99
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- $16.99
- Regular price
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vendorKomatsuKomatsu WA450-3 WA 450 Wheel Loader Service Repair Workshop Manual🏷️ Basic Information Identification Make: Komatsu Model: WA450-3 Series: WA 450 Production Years: N/A - specific production years not listed in manual Serial Number Range: 53001 and up 👋 Introduction Target Audience Market Position: Mid-size wheel loader for construction, aggregate,...
- Regular price
- $16.99
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- $16.99
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vendorKomatsuKomatsu WA450-3LE WA450-3L WA 450 Wheel Loader Service Repair Workshop...🏷️ Basic Information Identification Make: Komatsu Model: WA450-3LE Model Variant: WA450-3L Model Code: WA 450 Production Years: Serial number A30001 and up 👋 Introduction Market Position Target Audience: Technicians, workshop owners, and heavy equipment enthusiasts Purpose: Comprehensive service and repair...
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- $16.99
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vendorKomatsuKomatsu Service WA450-3MC Shop Manual Wheel Loader Workshop Repair Book🏷️ Basic Information Identification Make: Komatsu Model: WA450-3MC Model Variant: Wheel Loader (MC series) Production Years Covered: N/A - not specified for this manual 👋 Introduction Market Position Target Audience: Technicians, mechanics, and DIY owners maintaining or repairing the Komatsu...
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- $16.99
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- $16.99
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vendorKomatsuKomatsu WA700-3L WA 700 Avance Wheel Loader Service Repair Workshop...🏷️ Basic Information Identification Make: Komatsu Model: WA700-3L Avance Model Variant: Wheel Loader Production Years: N/A - not specified for this model Serial Numbers Covered: A50001 and up 👋 Introduction Market Position Target Audience: Heavy equipment technicians, workshop owners, and...
- Regular price
- $16.99
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- $16.99
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vendorKomatsuKomatsu WA450-5L WA480-5L WA 450 480 Wheel Loader Service Repair...🏷️ Basic Information Identification Make: Komatsu Model: WA450-5L / WA480-5L Model Variant: 5L Series Production Years: N/A - serial numbers A36001 and up (WA450-5L) and A37001 and up (WA480-5L) indicate production range 👋 Introduction Market Position Target Audience: Technicians, mechanics,...
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- $16.99
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- $16.99
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vendorKomatsuKOMATSU SA6D125E-3 SAA6D125E-3 Engine Service Manual🏷️ Basic Information Identification Make: Komatsu Engine Models Model: SA6D125E-3 Model Variant: SAA6D125E-3 (turbocharged, aftercooled) Production Years Covered: N/A - varies by machine application; consult your machine serial number Engine Family: 6D125 series, 11.0 L inline six-cylinder diesel 👋 Introduction...
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- Sale price
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vendorKomatsuKomatsu CX 20 Forklift Master Parts Manual🏷️ Basic Information Identification Make: Komatsu Model: CX 20 Model Variant: CX 20 Forklift Production Years: N/A - not specified for this model 👋 Introduction Market Position Target Audience: Service technicians, maintenance personnel, and equipment owners requiring genuine OEM parts...
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- $16.99
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vendorKomatsuKOMATSU 102-1 102-2 Series DIESEL Engine Service Shop Manual🏷️ Basic Information Vehicle Identification Make: Komatsu Model Series: 102-1 / 102-2 Product Type: Diesel engine service and shop manual Production Years Covered: 102-1 and 102-2 series production range Manual Coverage Scope: Complete engine service, overhaul, and repair procedures for...
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- $16.99
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vendorKomatsuKomatsu WA250-5 WA250PT-5 Wheel Loader Service Repair Manual - 70001...🏷️ Basic Information Identification Make: Komatsu Model: WA250-5 / WA250PT-5 Model Variant: WA250-5, WA250PT-5 Production Years: N/A - not specified for this model Serial Number Range: 70001 and up Vehicle Type Type: Wheel Loader 👋 Introduction Market Position Target Audience:...
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- $16.99
- Sale price
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vendorKomatsuKomatsu SK1020-5 SK1020-5 turbo Skid Steer Loader Service Repair Manual...🏷️ Basic Information Identification Make: Komatsu Model: SK1020-5, SK1020-5 turbo Model Variant: Standard and Turbo Serial Number Range: 37CF00004 and up (SK1020-5), 37CTF00003 and up (SK1020-5 turbo) Production Years Covered: Not specified; manual covers machines from serial numbers listed up...
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vendorKomatsuKomatsu CX20 CX 20 Forklift Lift truck parts catalogue manua🏷️ Basic Information Identification Make: Komatsu Model: CX20 Model Variant: Forklift Lift Truck, 2.0 ton capacity class Production Years: Covered by parts catalogue; exact years not specified. Refer to manual for serial number applicability. 👋 Introduction Overview Market Position: Target...
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