Need the factory reference for your Yanmar midi-excavator? This 122-page Operation Manual (OEM #LGBGK0-00015) covers the ViO75-A (EP), B7 Σ-A (EP), and SV100 (EP) from break-in procedures through long-term storage. Inside: hydraulic and wiring schematics, a complete troubleshooting section, standard bolt torque tables, and a full maintenance schedule including service intervals for hydraulic breaker work. You also get detailed operator controls, attachment precautions, transportation steps, and lifting capacity charts. Set rubber crawler tension to 20~25 mm on any of the three models; steel tracks on the ViO75-A and B7 Σ-A target 145~155 mm, while the SV100 calls for 170~180 mm. The hydraulic system holds 57.0 L total. Your machine is down. Get the factory number on the first try. Keyword-searchable and bookmarked: pull it up on any device and get back to work.
What's Inside This Yanmar ViO75-A (EP), B7 Σ-A (EP), SV100 (EP) Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 7 | - |
| Safety Information | 8-9 | Signal Words, Product Warnings, User Directions, Safety Signs, Installed Safety Guards, Unauthorized Attachments |
| Product Overview and Regulation | 10 | Intended Uses, Operation License, Lifting |
| Ordering Replacement Parts and Service Call | 11-12 | Location of Machine Serial Number Plate, Location of Engine Serial Number Plate, Location of the Epa Identification Plate, Ordering Replacement Parts and Service Calls |
| Safety | 13-38 | Basic Precautions, Operating Precautions, Precautions for Servicing, Safety Messages (Warning Labels) |
| Operation | 39-74 | Identification of Important Parts, Description of operator’s Area, Instructions, Transportation, Long-Term Storage, Troubleshooting |
| Maintenance | 75-88 | Precautions for Servicing, Basic Servicing Practices, Fueling, Oiling and Greasing Based on Temperature Range, Standard Tightening Torque for Bolts and Nuts, Maintenance Table |
| Specifications | 89-108 | Options, Hydraulic and Wiring Diagrams |
| Notes | 109-122 | Maintenance |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Crawler Tension (H) - Rubber tracks | 20~25 mm | p. 91 |
| Hydraulic oil system capacity (in tank) | 57.0 L | p. 79 |
| Standard tightening torque (M8x1.25) | 22.6 - 28.4 N•m | p. 80 |
| Fan belt tension (adequate slack) | 10 to 15 mm | p. 85 |
| ViO75-A, B7 Σ-A | ||
| Crawler Tension (H) - Steel tracks | 145~155 mm | p. 91 |
| Engine oil capacity (with filter) | 10.6 L | p. 5 |
| Fuel tank capacity | 100.0 L | p. 79 |
| Cooling system capacity (radiator) | 8.3 L | p. 79 |
| SV100 | ||
| Engine oil capacity (with filter) | 10.9 L | p. 5 |
| Fuel tank capacity | 120.0 L | p. 79 |
| Cooling system capacity (radiator) | 10.4 L | p. 79 |
| ViO75-A | ||
| Operating mass (with operator + 75 kg) | 7720 kg | p. 91 |
Yanmar ViO75-A (EP), B7 Σ-A (EP), SV100 (EP) Common Problems This Manual Covers
Yanmar ViO75-A right-hand travel motor won't pull forward, only moves when left lever fed simultaneously p. 102
Inspect the rotary coupling for split O-rings and the orbital valve for rubber debris contamination. Remove and flush the travel motor orificing valve; check for stripped gear faces inside. Verify hydraulic oil level in tank — system capacity is 57.0 L (page 79). If flow splits unevenly under load, the orbital valve slice needs replacement. Consult the hydraulic schematic on page 102 to trace the travel circuit before disassembly.
Manual Section: Specifications: Hydraulic SchematicEngine loses power and stalls, getting worse at higher throttle p. 72
Drain the fuel tank completely and inspect the tank screen for sludge from internal lining degradation. Clean or replace the strainer before refilling. Check the troubleshooting table on page 72 for no-start and power-loss procedures. Tank capacity is 100.0 L on ViO75-A and B7 Σ-A, 120.0 L on SV100 — do not overfill after cleaning. If stalling continues, check for dark exhaust fumes and cross-reference engine troubleshooting on page 68.
Manual Section: Operation: Troubleshooting ProceduresExcessive vibration and grinding noise from travel or swing drive during operation p. 70
Check hydraulic oil level first — tank holds 57.0 L (page 79); low fluid accelerates internal motor wear. Review the troubleshooting table on page 70 for low-power and swing anomalies. Inspect travel and swing drive housings for metal particles in the drain plug oil. If noise persists under load, the drive motor internals show wear and require disassembly inspection. Schedule service before total failure to avoid secondary damage to the hydraulic circuit.
Manual Section: Machine Body TroubleshootingElectrical instability: gauges flickering, intermittent starts, voltage fluctuations under load p. 69
Inspect all electrical connectors for moisture intrusion and corrosion — pay special attention to sealed connector boots. Check the wiring diagram on page 105 to identify the charging circuit path. Test alternator output voltage at the battery terminals under load; a healthy charging system should hold above 13.5 V. Review battery and starter troubleshooting on page 69. Clean connector pins, apply dielectric grease to seals, and verify ground straps are torqued to spec (M8x1.25 fasteners: 22.6 to 28.4 N•m per page 80).
Manual Section: Electrical Equipment TroubleshootingTracks too loose or too tight, uneven wear, or machine pulling to one side p. 91
Measure crawler tension at the midpoint sag. Rubber tracks on all models: target 20 to 25 mm. Steel tracks on ViO75-A and B7 Σ-A: 145 to 155 mm; on SV100: 170 to 180 mm (page 91). Adjust track tension springs symmetrically — uneven tension causes straight-line tracking problems. Inspect the track tension spring for fatigue or cracking while the track is slack. Follow the maintenance schedule on page 78 for tension check intervals.
Manual Section: Specifications: Technical SpecificationsFan belt slipping, battery not charging, or engine overheating at operating temperature p. 85
Check fan belt deflection by pressing firmly at the midpoint between pulleys — correct slack is 10 to 15 mm (page 85). A belt outside this range either slips under load or risks cracking from overtension. Inspect belt surface for glazing, cracking, or oil contamination. If overheating accompanies belt slip, check coolant level: radiator capacity is 8.3 L on ViO75-A and B7 Σ-A, 10.4 L on SV100. Cross-reference steam and water-temp alarm procedures on page 68.
Manual Section: MaintenanceFrequently Asked Questions
What are the torque specs for the Yanmar VIO75-A engine bolts?
The manual provides a Standard Tightening Torque for Bolts and Nuts table. For coarse threads, torques range from 9.8 - 11.8 N•m for M6x1 to 323.6 - 402.1 N•m for M20x2.5. For fine threads, torques range from 127.5 - 147.1 N•m for M14x1.5 to 210.9 - 240.3 N•m for M16x1.5. Fine thread screws are specified for engine use only.
How do you fix Yanmar ViO75-A right-hand travel motor won't pull forward, only moves when left lever fed simultaneously?
Inspect the rotary coupling for split O-rings and the orbital valve for rubber debris contamination. Remove and flush the travel motor orificing valve; check for stripped gear faces inside. Verify hydraulic oil level in tank — system capacity is 57.0 L (page 79). If flow splits unevenly under load, the orbital valve slice needs replacement. Consult the hydraulic schematic on page 102 to trace the travel circuit before disassembly.
How do you fix engine loses power and stalls, getting worse at higher throttle?
Drain the fuel tank completely and inspect the tank screen for sludge from internal lining degradation. Clean or replace the strainer before refilling. Check the troubleshooting table on page 72 for no-start and power-loss procedures. Tank capacity is 100.0 L on ViO75-A and B7 Σ-A, 120.0 L on SV100 — do not overfill after cleaning. If stalling continues, check for dark exhaust fumes and cross-reference engine troubleshooting on page 68.
How do you fix excessive vibration and grinding noise from travel or swing drive during operation?
Check hydraulic oil level first — tank holds 57.0 L (page 79); low fluid accelerates internal motor wear. Review the troubleshooting table on page 70 for low-power and swing anomalies. Inspect travel and swing drive housings for metal particles in the drain plug oil. If noise persists under load, the drive motor internals show wear and require disassembly inspection. Schedule service before total failure to avoid secondary damage to the hydraulic circuit.
Is this Yanmar ViO75-A (EP), B7 Σ-A (EP), SV100 (EP) manual a digital?
Immediate download of the complete 122-page searchable Operation Manual. Access it on any device, from a laptop at your desk to a phone in the field.
Is this Yanmar ViO75-A (EP), B7 Σ-A (EP), SV100 (EP) manual printable?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
Can I find wiring schematics in this Yanmar ViO75-A (EP), B7 Σ-A (EP)?
Yes, an electrical wiring diagram is included to help trace the main circuits.
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