Part of the Yanmar Repair Manuals.
All 520 pages of this Yanmar ViO23-6 Service Manual cover one machine: your mini excavator, from canopy mount to rubber track. If you've been hunting for a Yanmar ViO23-6 service manual PDF with actual factory numbers, this is it. Inside: hydraulic circuit schematics with full fluid routing, electrical wiring diagrams for both machine and engine systems, a complete tightening torque section, error code lists, and a troubleshooting chapter covering non-breakdowns and a quick-reference fault table. Step-by-step rebuild procedures span the engine, fuel, cooling, lubrication, swing, travel, and hydraulic pump assemblies. Replace rubberized fuel hoses at 2,000 hours or two years, whichever comes first; torque the M16×40 canopy mount to 123.0–151.9 ft·lbf with ThreeBond 1324 applied. Every hour your machine sits idle costs you money. Bookmarked and searchable: jump to any section, find any spec, get the job done.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General Cautions for Maintenance Work | 10-21 | Correct Work, Safety Precautions, Preparations, Cautions for Disassembly and Reassembly, Cautions for Removal and Installation of Hydraulic Equipment |
| Technical Data | 22-48 | 2-1 Specifications, 2-2 Outline Drawing and Working Area, 2-3 Weight List of Main Parts, 2-4 Lifting Capacity List, 2-5 Specifications for Attachment |
| Service Standards | 49-78 | Machine Performance, Engine, Undercarriage (Rubber Track Specifications), Controls, Hydraulic Equipment (Hydraulic Cylinders) |
| Engine | 79-214 | 4-1 Safety, 4-2 Engine, 4-3 Fuel System, 4-4 Cooling System, 4-5 Lubrication System, 4-6 Starter Motor, 4-7 Alternator, 4-8 Electric Wiring |
| Electric System | 215-236 | 5-1 Electric Equipment of Machine, 5-3 Engine Speed Controller, 5-4 Error Code List |
| Hydraulic System | 237-404 | 6-1 Outline, 6-2 Hydraulic Pump, 6-3 Control Valve, 6-4 Pilot Valve, 6-5 Swing Motor, 6-6 Travel Motor, 6-7 Proportional Solenoid Valve |
| Adjustment and Repair | 405-506 | 7-1 Engine and Electric Equipment, 7-2 Undercarriage, 7-3 Controls, 7-4 Swing Bearing, 7-5 Hydraulic Equipment, 7-6 Work Implements |
| Troubleshooting | 507-520 | 8-1 Non-Breakdowns, 8-2 Quick Reference Table for Troubleshooting |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| 4-pole canopy × Canopy mount (M16×40) tightening torque | 123.0 to 151.9 ft·lbf (166.7 to 206 N·m) | p. 67 |
| Hydraulic hose (Hose clip 60) tightening torque | 3.3 to 4.4 ft·lbf (4.5 to 5.9 N·m) | p. 67 |
| Fuel filter filtration area | 66.96 sq.in. (432 sq.cm) | p. 29 |
| Rubberized fuel hoses replacement interval | Every two years or every 2000 hours of engine operation, whichever comes first | p. 81 |
| Air cleaner filtration area | 6.35 sq.ft. (0.59 sq.m) | p. 29 |
| Overall length (Transportation position) | 153.1 in | p. 22 |
| Travel speed (Rubber track, Low speed) | 1.4 MPH | p. 22 |
| System relief set pressure (P1, P2) | 2987 PSI | p. 24 |
| Maximum P.T.O. discharge volume | 11.1 GPM | p. 24 |
| Rated output / engine speed | 19.6 HP / 2400 rpm | p. 28 |
| Compression pressure | 498 PSI | p. 28 |
| Radiator cooling fluid quantity | 3.7 L | p. 37 |
