Part of the Yanmar Parts Manuals.
Need the factory part numbers for your 1993-1997 Yanmar VIO20 crawler backhoe? This 151-page parts catalog (OEM #Y00K2902) maps every system from the engine bay to the boom tip. Inside: exploded views for engine, hydraulic, chassis, cab, and boom assemblies, each keyed to exact OEM part numbers with full cross-references so you order the right piece on the first call. Hydraulic schematics and wiring diagrams round out the component identification picture. The factory data holds up: engine bore and stroke run 68 x 72 mm, and hydraulic cylinder dust seals measure 50 x 60 x 4 mm. Stop showing up at the counter with a description and a prayer. Bookmarked by section; open it on your phone, search the part name, and place the order before you walk back to the machine.
What's Inside This Yanmar VIO20 Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Specifications | 1-5 | Engine Model, bore/stroke 68x72mm, Rated Power, Operating Weight, Bucket Capacity, Max Digging Depth, Travel Speed |
| Hydraulic System Parts | 50-80 | Hydraulic Cylinder Dust Seal 50x60x4mm, Bucket Cylinder Dust Seal 38x48x4mm, Hydraulic Pump, Control Valve, Cylinder Rod Seal Kits |
| Electrical System Parts | 81-100 | Wiring Harness, Battery, Starter Motor, Alternator, Fuse, Relay, Switches, Electrical Components |
| Boom & Arm Assembly Parts | 101-130 | Boom Cylinder, Arm Cylinder, Bucket Link, Pins and Bushings, Boom Pivot, Dipper Arm Assembly |
| Undercarriage & Travel Parts | 131-145 | Track Chain, Track Shoe, Sprocket, Idler, Roller, Travel Motor, Track Frame |
| Engine & Cooling Parts | 15-49 | Engine Assembly, Cooling System, Fuel System, Air Cleaner, Exhaust, Engine Mounts |
| Painted Parts & Color Reference | 1-14 | Painted Color Munsell Codes, Color Chart, Paint Part Numbers, Spray Type, Main Parts Colors |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Seal dimension | 50x60x4 mm | p. 57 |
| Bore x Stroke | 68 x 72 mm | p. 2 |
| Travel speed (High/Low) | 4.6 / 2.3 km/h | p. 2 |
Yanmar VIO20 Common Problems This Manual Covers
Machine drifts to one side because maximum travel speed drops entirely
Examine the chassis parts diagram to locate the travel motor components. Confirm the assembly matches the factory travel speed rating of 4.6 / 2.3 km/h on page 2. Pull the correct replacement drive sprocket and final drive motor part numbers for your order.
Manual Section: SpecificationsFrequently Asked Questions
How do you fix hydraulic cylinder weeping fluid around the rod end after heavy digging?
Check the hydraulic parts diagram for the correct seal kit breakdown. Identify the individual dust seal listed as 50x60x4 mm on page 57. Cross-reference the required O-rings and backup rings with the main parts number list to complete your order.
How do you fix engine cranks slowly or refuses to start completely during cold morning shifts?
Inspect the wiring diagram to trace the battery and starter circuits. Locate the specific alternator part number and mounting hardware. Verify engine specifications on page 2 showing the 68 x 72 mm bore and stroke to ensure you order the correct starter match.
How do you fix boom pivot point losing pressure and dropping the attachment during operation?
Review the boom and attachment parts diagram for the cylinder breakdown. Find the replacement dust seal measuring 38x48x4 mm on page 134. Match the seal part numbers exactly to your machine serial number range to prevent ordering incompatible bucket cylinder components.
What do I get after purchasing this Yanmar VIO20 manual?
You get a 151-page searchable PDF (3 MB) that downloads instantly after checkout. Open it on your laptop, tablet, or phone, and bring it right to the shop floor.
Are there any print restrictions on this Yanmar VIO20 manual?
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 hydraulic circuit diagrams in this Yanmar VIO20 manual?
Yes, this Yanmar VIO20 Parts Catalog includes a hydraulic system diagram.
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