All 418 pages of this Yanmar ViO17 Service Manual zero in on one machine: your 2009–2012 mini excavator, from hydraulic pump to rubber crawler undercarriage. Inside you get the full hydraulic circuit schematic covering every actuator (boom, arm, bucket, swing, blade, travel, track gauge change), plus monitor and alarm wiring diagrams with complete circuit descriptions for engine start, stop, and battery charging. Open to the Service Standards chapter and you'll find a tightening torque list covering every critical fastener on the machine and engine, alongside exploded views and step-by-step teardown procedures for the hydraulic pump, control valve, pilot valve, swing motor, and travel motor. Torque your sprocket bolts to 44.1–58.8 N·m; set the track roller nut to 78.5–98.1 N·m. Your machine is down and the clock is running. Grab the PDF on any device, search by keyword, and get the factory answer without guessing.
What's Inside This Yanmar ViO17 Manual
| System | Pages | Key Topics |
|---|---|---|
| Spine Title | 2 | Service Manual, Excavator, ViO17 |
| General Cautions for Maintenance Work | 9-22 | Correct Work, Safety Precautions, Preparations, Cautions for Disassembly and Reassembly, Cautions for Removal and Installation of Hydraulic Equipment |
| Technical Data | 23-36 | Specifications, Outline Drawing and Working Area, Weight List of Main Parts, Lifting Capacity List |
| Service Standards | 37-58 | Machine Performance, Engine, Undercarriage (Rubber Crawler Specifications), Controls, Hydraulic Equipment (Hydraulic Cylinders) |
| Engine | 59-98 | Measurement |
| Hydraulic System | 99-134 | Outline (Control Valve Operation, Additional Operation of Control Valve), Hydraulic Circuit Schematic (for Standard Type Machines) |
| Hydraulic Equipment | 135-274 | Hydraulic Pump, Control Valve, Pilot Valve, Swing Motor, Travel Motor |
| Adjustment and Repair | 275-366 | Electric Equipment of Machine (Parts Layout of Electrical Equipment, Monitor and Alarm Systems, Wiring Diagram, Circuit Description of Engine Start and Stop, And Battery Charging, Removal and Reinstallation of Engine, Removal and Reinstallation of Starter Motor, Removal and Reinstallation of Fuel Injection Pump, Removal and Reinstallation of Fuel Tank, Removal and Reinstallation of Radiator) |
| Periodic Inspection and Servicing | 367-370 | List of Periodic Inspection and Servicing |
| Fuel, Lube Oil and Grease Recommended | 371-374 | Fuel, Lube Oil and Grease Recommended, Recommendations Based on Temperature Ranges, Table of Mixing Ratio of Anti-Freeze to Water |
| Troubleshooting | 375-412 | Non-Breakdowns, Natural Release of Bucket, Discontinuous Arm Movement, Thermal Shock of Travel Motor, Time Lag on Travel Speed Switching, Machine and Engine, How to Use the Charts, Low Output |
| Reference Data | 413-418 | Specifications for Attachment, ViO17 Service Manual (First Edition, 2nd Edition, Published by, Edited by, Finished by) |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Sprocket tightening torque | 32.6 to 43.4 ft•lbf (44.1 to 58.8 N•m) | p. 53 |
| Track roller tightening nut tightening torque | 57.9 to 72.4 ft•lbf (78.5 to 98.1 N•m) | p. 53 |
| LO filter Filter valve opening pressure | 11.4 to 17.1 (0.08 to 0.12) PSI (MPa) | p. 30 |
| Air cleaner Filtration area | 4.7 (0.44) sq.ft. (sq.m) | p. 30 |
| Fuel filter filtration area | 67.0 (432) sq.in. (sq.cm) | p. 30 |
| Oil/water separator Mesh filter screen | 100 mesh | p. 30 |
| Return filter Filtration accuracy | 10 μ | p. 28 |
| Return filter By-pass valve opening pressure | 21.3 (0.15) PSI (MPa) | p. 28 |
| Battery type | 65B24L | p. 31 |
| Battery voltage - 5 hrs rate capacity | 12-40 V-Ah | p. 31 |
| Main relief valve P1 set pressure | 2986 (20.6) PSI (MPa) | p. 26 |
| Main relief valve P2 set pressure | 2986 (20.6) PSI (MPa) | p. 26 |
Yanmar ViO17 Common Problems This Manual Covers
Yanmar ViO17 hydraulic functions slow or weak after extended operation, bucket and arm won't develop full force p. 103
Check hydraulic oil level first. The tank holds 6.86 Gals (26 L), and low fluid drops circuit pressure immediately. Inspect the 10 μ return filter; bypass opens at 21.3 PSI (0.15 MPa), so a clogged element forces contaminated oil through. Verify main relief pressure at P1 and P2 reads 2986 PSI (20.6 MPa) using the troubleshooting chart on page 103.
Manual Section: Hydraulic SystemEngine won't start or cranks slowly, cold morning with low battery voltage
Check battery electrolyte and clean terminals; the 65B24L (12V, 40 Ah) loses cranking power quickly in cold temps and the engine needs 469 PSI (3.2 MPa) compression to fire. Drain the water separator, equipped with a 100-mesh screen. If it cranks but won't start, verify fuel injection timing is set between 15 and 17 degrees, referenced on page 31.
Manual Section: Machine and Engine TroubleshootingEngine overheats under load, temperature alarm fires, machine loses power mid-dig
Inspect coolant level and check for collapsed hoses before running the engine. The water temperature alarm activates between 224.6 and 235.4°F (107 to 113°C) per page 30; if it fires under moderate load, clean external debris from the radiator. Pull the air filter, rated at 4.7 sq.ft. (0.44 sq.m); a clogged element forces the engine to work harder and overheat.
Manual Section: Machine and Engine TroubleshootingOil leaking from hydraulic lines or cylinder rods, fluid level drops between service checks p. 135
Identify the fluid source before loosening anything. Hydraulic circuits run at up to 2986 PSI (20.6 MPa), so a weeping fitting loses significant fluid under load. Follow the safety depressurization steps on page 9 before cracking any fitting. Inspect cylinder rod seals, hose crimps, and pump output ports for damage; seal specs and assembly procedures are at page 135.
Manual Section: Hydraulic EquipmentArm slows or stops mid-stroke during digging, control lever feels normal but output drops
Check hydraulic oil level and 10 μ return filter condition; a saturated element restricts arm flow before anything else fails. Verify circuit relief pressure holds at 2986 PSI (20.6 MPa) under load. If pressure tests pass, inspect the arm spool for contamination. Use the hydraulic schematic on page 107 to trace the arm pilot circuit and locate where pressure drops.
Manual Section: Work Implement TroubleshootingFrequently Asked Questions
What are the torque specs for YANMAR ViO17 track rollers?
The tightening torque for the track roller mounting bolt (M12) on the YANMAR ViO17 is 57.9 to 72.3 ft·lbf (78.5 to 98.1 N·m). This specification is also applicable when reinstalling the track roller.
What does the YANMAR ViO17 alarm code mean?
The YANMAR ViO17 uses alarm lamps to indicate machine conditions. For instance, an engine oil pressure alarm lamp indicates a lube oil pressure drop, a water temp. alarm lamp indicates overheating (water temperature rise >224.6 to 235.4 °F), and a battery charge alarm lamp indicates poor battery charging or a low voltage generated by the dynamo.
What are the replacement specifications for engine oil filter?
The engine oil filter element on the YANMAR ViO17 should be replaced every 250 hours. If the machine is used in dusty worksites, it is recommended to clean and replace the filter element twice or more frequently than the specified interval.
How do you fix yanmar ViO17 hydraulic functions slow or weak after extended operation, bucket and arm won't develop full force?
Check hydraulic oil level first. The tank holds 6.86 Gals (26 L), and low fluid drops circuit pressure immediately. Inspect the 10 μ return filter; bypass opens at 21.3 PSI (0.15 MPa), so a clogged element forces contaminated oil through. Verify main relief pressure at P1 and P2 reads 2986 PSI (20.6 MPa) using the troubleshooting chart on page 103.
How will I receive this Service Manual?
Immediate download of the complete 418-page searchable Service Manual. Access it on any device, from a laptop at your desk to a phone in the field.
Can I print this manual?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
Are hydraulic system diagrams in this Yanmar ViO17 Service Manual?
Yes. The manual includes hydraulic circuit diagrams, system schematics, and component specifications with pressure ratings.
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