Part of the Yanmar Operator Manuals.
Searching for a Yanmar B7-SIGMA (EP) operator manual PDF? All 222 pages of OEM #LGBB7SIGMA.0 are here: factory operating procedures, a full safety section, and a maintenance schedule structured from pre-start checks through 2000-hour service intervals. Inside you get wiring diagrams, hydraulic schematics with complete fluid routing, a monitor and switch reference explaining every indicator your dashboard displays, plus a troubleshooting index that walks you through engine faults, electrical issues, and battery overdischarge without calling the dealer. Fill the hydraulic system with ISO VG46 oil (57 liters total capacity), and you'll find exactly when to change it: every 1000 hours for standard digging, every 250 hours when running a breaker. No more guessing at intervals or hunting down specs in a forum thread. Bookmarked and searchable; jump to any section from your phone on the job site.
What's Inside This Yanmar B7-SIGMA (EP) Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Product Overview | Intended uses, Break-in period, EPA emission compliance | |
| Ordering Replacement Parts and Service Calls | Machine serial number plate, Engine serial number plate, EPA emission control plates, Warranty for exhaust emission control, Ordering parts and service calls | |
| Operating Precautions | Pre-start checks, Starting, working, and parking precautions, Transportation precautions, Battery precautions, Towing precautions, Hooked bucket precautions | |
| Safety Messages (Warning Labels) | Location of warning labels | |
| Identification of Important Parts | Overview of the machine, Controls and switches | |
| Description of Control Devices | Monitors, Switches, Control levers and pedals, Engine hood, Operator seat, Headlight, Cabin door, Fuse, Windshield | |
| Operating Instructions | Pre-start checks, Engine start-up, Traveling and steering, Stopping the machine, Swinging the upperstructure, Operating the implement, Bucket operations, Parking, Locking, Rubber crawlers, Hydraulic PTO | |
| Transportation | Loading and unloading, Precautions for loading, Precautions for transporting, Suspending the machine | |
| Care and Service in Cold Weather | Preparing for cold weather, After a day's work, After cold weather ends | |
| Long-term Storage | Before storing, Storing, Using the machine again | |
| Troubleshooting | Non-fault phenomena, Towing, Battery overdischarge recovery, Troubleshooting chart | |
| Maintenance | Basic servicing practices, Oils, fuel, and cooling water, Hydraulic system, Fueling and greasing by temperature, Standard tightening torques, Maintenance table, Service intervals (standard and hydraulic breaker), First services, Maintenance every 50/100/250/500/1000/2000 service hours | |
| Specifications and Dimensional Diagrams | Machine specifications, Dimensional diagrams |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Hydraulic oil type | ISO VG46 | p. 148 |
| Amount of hydraulic oil to be changed | 15.05 Gals. (57 L) | p. 155 |
| Engine Oil Capacity (pan) | 10.78 Qts. (10.2 L) | p. 155 |
| Fuel Tank Capacity | 26.4 Gals. (100 L) | p. 155 |
| Hydraulic Oil System Capacity (in tank) | 15.05 Gals. (57 L) | p. 155 |
| Hydraulic Oil System Capacity (other parts) | 11.35 Gals. (43 L) | p. 155 |
| Swing Reduction Gear Oil Capacity | 1.59 Qts. (1.5 L) | p. 155 |
| Travel Reduction Gear Oil Capacity (each) | 1.37 Qts. (1.3 L) | p. 155 |
| Engine Rated Output | 55.2 HP | p. 213 |
| Engine Displacement | 202.40 cu.in. | p. 213 |
| System Relief Set Pressure | 3552.5 PSI | p. 213 |
| Battery Type and Capacity | 12V, 92Ah | p. 213 |
