Need the factory part numbers for your Yanmar VIO40-TW? This 146-page parts catalog PDF (OEM #Y00K3340) maps every component on your mini excavator to its OEM number, section by section. Inside: exploded views for the complete hydraulic circuit, from the main pump and swivel joint through every control valve assembly, plus individual cylinder breakdowns for boom, arm, bucket, swing, and blade. You also get hydraulic piping schematics tracing each line from tank to valve to motor, and the electrical layout covering the harness, battery, and work lamp wiring. When sourcing electrical parts, the catalog confirms the work lamp spec at 12V 55W and lists the harness fuse ratings at 7A and 30A — so you order exactly what fits, not what looks close. Stop squinting at corroded part stampings. Bookmarked for instant navigation; search any component name on your phone right there in the yard.
What's Inside This Yanmar VIO40-TW Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 14-16 | Labels, Tool Kit, Safety Decals |
| Engine & Electrical Components | 18-32 | Air/Exhaust Pipes, Accelerator Linkage, Engine Mounts, Radiator/Oil Cooler, Fuel Tank/Pipes, Battery, Electrical Harness, Work Lamp |
| Undercarriage | 34-36 | Track Rollers, Idler Adjustment, Rubber Crawler, Travel Motor |
| Operator Controls | 37-48 | Operation Levers, Travel Pedals, Swing Control, Blade Control, PTO Control |
| Frame & Body | 49-66 | Turning Bearing, Frame Covers, Turn Table, Seat Mount, Step, Bonnet, Ducts, Canopy Frame |
| Hydraulic System - Main Components | 67-69 | Hydraulic Pump, Swivel Joint, Hydraulic Oil Tank |
| Hydraulic System - Cylinders | 70-80 | Boom Cylinder, Arm Cylinder, Bucket Cylinder, Swing Cylinder, Blade Cylinder |
| Hydraulic System - Control Valves | 87-106 | P Port Valve, Travel/PTO Valve, Arm/Swing Valve, Boom/Bucket Valve, Turning/Blade Valve, Remote Work Valve, Tributary Valve, Change Over Valve |
| Hydraulic System - Piping | 109-128 | Tank to Pump Piping, Valve to Motor Piping, Return Piping, Control Piping |
| Greasing System | 129-130 | Grease Nipples, Grease Hoses, Remote Greasing Points |
| Attachments | 131-144 | Boom Bracket, Arm Link, Bucket Types, Blade Assembly |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Fuse amperage | 7A | p. 29 |
| Bulb Specification (Work Lamp) | 12V55W | p. 31 |
| Bulb Specification (General) | 24V- 6W | p. 29 |
| Fuse Rating | B30 | p. 29 |
| Grommet Dimension | 16X20X4.5 | p. 29 |
| Exhaust Pipe Dimension | 7X 225mm | p. 23 |
| O-Ring Dimension (P-type) | 1A P-16.0 | p. 23 |
| Seal Dimension (Roller) | 45 85 8.5 19 | p. 33 |
| Collar Dimension | 35X45X34 | p. 33 |
| Spring Pin Dimension | 5X20 | p. 80 |
| Washer Dimension | 32X11X2.3 | p. 80 |
| Spacer Dimension | 1.6 | p. 107 |
Yanmar VIO40-TW Common Problems This Manual Covers
Yanmar VIO40-TW track roller seals leaking, need correct replacement part numbers for undercarriage rebuild p. 34
Pull up the undercarriage diagram starting on page 34. Track roller seals are dimensioned at 45 x 85 x 8.5 x 19 mm (page 33), so match those figures to the part numbers in the exploded view before ordering. Cross-check seal quantities per roller against the parts index to confirm the full kit.
Manual Section: UndercarriageWork lamp won't accept replacement bulb, unclear which spec and part number to order p. 31
Check the electrical section starting on page 18. The work lamp bulb specification is 12V 55W (page 31), listed in the parts diagram alongside the lamp housing part number. Confirm you are ordering the correct lamp assembly number from the parts index before purchasing a replacement.
Manual Section: Engine & Electrical ComponentsFuse keeps blowing, need correct amperage rating and replacement part number from catalog p. 29
Locate the electrical harness diagram on page 18. Fuse ratings are shown on page 29, with circuits rated at either 7A or 30A depending on which function is protected. Match the blown fuse position in the diagram to its rated value, then pull the correct part number from the index.
Manual Section: Engine & Electrical ComponentsBlade cylinder seal kit needed, but multiple part numbers appear in catalog for similar components p. 70
Open the cylinder exploded views beginning on page 70. Find the blade cylinder sub-section and identify part numbers for each seal and bushing individually. The spring pin measures 5 x 20 mm and the washer 32 x 11 x 2.3 mm (page 80); use those dimensions to confirm you have the right components before cross-checking the full kit.
Manual Section: Hydraulic System - CylindersExhaust pipe cracked or damaged, need correct part numbers for flanges, gaskets, and clamps p. 22
Check the engine parts diagram on page 22. The exhaust pipe assembly on page 23 shows the 7 x 225 mm pipe along with individual part numbers for flanges, clamps, and gaskets, including O-ring 1A P-16.0. Use the parts index to confirm the correct part numbers for your serial number range before ordering.
Manual Section: Engine & Electrical ComponentsHydraulic return line hose needs replacement, unsure which piping assembly part numbers apply p. 109
Turn to the Hydraulic System piping section starting on page 109. Return piping runs are diagrammed separately from pressure and control lines, each position labeled with individual part numbers for hoses, fittings, and clamps. Identify the hose by its routing location in the diagram, then verify the part number against the master index.
Manual Section: Hydraulic System - PipingFrequently Asked Questions
What are the torque specs for Yanmar VIO40-TW track motor/final drive bolts?
The manual lists bolts for the travel motor (Fig. 33) as "BOLT M12X80" with part number 26450-120802, quantity 6. While a specific torque value in Nm or ft-lb is not explicitly stated, the bolt size M12 and length 80 are provided for replacement.
What are the replacement specifications for hydraulic hoses?
The manual provides replacement specifications for various hydraulic hoses by listing their specific part numbers and descriptions across multiple figures related to hydraulic piping. For instance, Fig. 47 lists "HOSE G206BC166S" with part number 172164-78600, and Fig. 48 includes "HOSE P204BC330S" with part number 172192-78280.
How do you fix yanmar VIO40-TW track roller seals leaking, need correct replacement part numbers for undercarriage rebuild?
Pull up the undercarriage diagram starting on page 34. Track roller seals are dimensioned at 45 x 85 x 8.5 x 19 mm (page 33), so match those figures to the part numbers in the exploded view before ordering. Cross-check seal quantities per roller against the parts index to confirm the full kit.
How do you fix work lamp won't accept replacement bulb, unclear which spec and part number to order?
Check the electrical section starting on page 18. The work lamp bulb specification is 12V 55W (page 31), listed in the parts diagram alongside the lamp housing part number. Confirm you are ordering the correct lamp assembly number from the parts index before purchasing a replacement.
What format is this manual in?
A 146-page Parts Catalog in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Am I able to print pages from this manual?
No restrictions at all. Print individual pages, full chapters, or the entire manual. The PDF is completely unlocked.
Does this Yanmar VIO40-TW manual include hydraulic schematics?
Included. A hydraulic system diagram shows the main hydraulic layout for the Yanmar VIO40-TW.
Document Quality
This document is a mixed PDF, featuring both scanned image pages and pages with an OCR text layer. You can search and copy text on the OCR-processed pages, but text within the scanned diagrams and illustrations is not selectable. Text quality is generally clear and readable across the document, with crisp text on OCR pages and clear, though rasterized, text on image pages. All diagrams are raster images, meaning they may show slight pixelation when highly magnified, but their labels remain readable. The pages are clean, free from significant scan artifacts, stains, or skewed content, and there are no notable blank or filler pages.
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