An engine oil pressure lamp glows halfway through a shift and the operator has no idea whether to park it or push on; this 96-page Komatsu FD and FG series forklift operator manual PDF (Komatsu OM025) settles questions like that across 34 diesel and gasoline models, FD10 through FG30H. Wiring diagrams close out the book, tracing the starting switch, alternator, fuse box, and lamp circuits so you can follow an electrical fault to its terminal. Daily check routines, a full maintenance table, and a lubrication chart lay out what gets inspected before starting and what gets replaced on schedule, down to brake hoses and lift chains. Draining a 4D95S diesel? Refill with 5.8 liters of engine oil; the 4FE1 takes 4.3. Two in the morning, one truck down, nobody awake to ask: the answer sits in here. Print the pages you work from and let them catch grease; bookmarks keep the on-screen copy in order.
Complete the set for your FD10-FG30 Series
- Repair Manual: Komatsu FG20-FD30 Series Shop Manual — Wiring Diagrams
What's Inside This Komatsu FD10-FG30 Series Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Machine Identification | 3-4 | Unit Xxa, Unit Xxb, Machine Serial Number, Registration Number |
| Breaking in and Before Operating | 6-8 | Engine, Torqflow Transmission, Differential |
| General Locations, Instruments and Controls | 9-24 | Mast, Lift Chain, Lift Cylinder, Starting Switch, Fuel Gauge, Battery Charge Warning Lamp, Engine Oil Pressure Warning Lamp, Water Temperature Gauge |
| Operating Your Machine | 25-30 | Engine Starting, Starting Machine, Speed Change, Forward-Reverse Change, Loading, Unloading |
| Check Before Starting | 31-38 | Water or Oil Leakage, Tire Air Pressure, Battery Electrolyte Level, Fan Belt Tension, Brake Fluid, Lift Chain Tension |
| Periodic Maintenance | 39 | Periodic Lubrication, Maintenance, Inspection Intervals |
| Periodic Replacement of Consumable Parts | 40 | Master Cylinder, Brake Hose, Power Steering Hose |
| Maintenance Table | 41-45 | Body Exterior, Engine Oil, Hydraulic Tank, Lift Chain, Air Cleaner, Fuel Filter |
| Replacement and Check | 46-64 | Battery, Air Cleaner, Engine Oil Filter, Fuel Filter Element, Transmission Oil, Cooling System |
| Service Data | 65-74 | Engine, Valve Clearance, Engine Compression, Idling Speed, Torque Converter Stall Speed, Tire Air Pressure |
| Lubrication Chart | 75-79 | Lift Chain, Torque Converter, Hydraulic Oil Tank, Engine Oil Pan, Differential, Tilt Cylinder Pin |
| Operating in Extreme Temperatures | 80-82 | Lubrication Oil, Diesel Fuel, Antifreeze, Cooling Water, Battery, Fuel System |
| Storage | 83-84 | Hydraulic Piston Rods, Batteries, Antifreeze, Engine, Oil Film |
| Fuel and Lubricants | 85-89 | Engine Oil, Gear Oil, Hydraulic Oil, Brake Fluid, Grease, Diesel Fuel |
| Wiring Diagrams | 90-96 | Starting Switch, Alternator, Fuse Box, Battery, Head Lamp, Turn Signal Lamp |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| FG10/14/15/18 | ||
| Engine Oil Capacity (4P Engine) | 3.5L | p. 50 |
| FD10/14, FD15/18 | ||
| Engine Oil Capacity (4FE1 Engine) | 4.3L | p. 53 |
| FD15H/18H | ||
| Engine Oil Capacity (C240 Engine) | 4.0L | p. 53 |
| FD20/25/30, FD20S/25S/30S | ||
| Engine Oil Capacity (4D95S Engine) | 5.8L | p. 52 |
| FD20H/25H/30H | ||
| Engine Oil Capacity (4D95L Engine) | 7.0L | p. 52 |
| Gasoline models | ||
| Spark Plug Gap | 0.7 to 0.8 mm | p. 50 |
| All Models | ||
| Parking Brake Operating Force | 20 kg | p. 35 |
| Front Tire Air Pressure | 7.0 kg/cm2 | p. 65 |
| Rear Tire Air Pressure | 7.0 kg/cm2 | p. 65 |
| FD18/18H | ||
| Rear Tire Air Pressure (FD18/18H) | 8.0 kg/cm2 | p. 66 |
