Tracking down the right replacement components for your crawler back-hoe just got easier with this 175-page Yanmar ViO25-6A parts manual PDF (OEM #0CK50-M00040EN). Inside, you get highly detailed exploded views mapping out the entire machine, from the complete hydraulic pump assembly to the boom cylinders and control valves. Every diagram includes exact OEM part numbers and hardware descriptions so you order the correct component every time. Verify whether you need the 10x28 parallel pin for the turning bearing or confirm the exact 60A slow-blow fuse required for the main harness. Stop wasting time explaining what a broken bracket looks like to the parts counter. Open this bookmarked file on your tablet, find the exact part number, and get your excavator back to work.
What's Inside This Yanmar ViO25-6A Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Reference Materials | 2-5 | - |
| Label(Exterior)(To Maf000) | 10 | Set, Out Us, Model L R, Rear, Yanmar 442, HYD.OIL, Cylinder |
| 147.(1A)Label(Exterior)(From Maf001) | 11 | Label Set, Out Us D, Label, Model VIO25, Rear 25, Yanmar 450 B |
| Label(Bonnet Inside) | 12 | Set, In Us, Sub Tank, Anti-Freezing, Radiator, Fuse, Air Cleaner |
| Label(Canopy) | 13 | Set, 4P Us, Brandlogo 200, Crawler, Operation Us, Tag Assy, Caution, ROPS |
| Label(Cabin) | 14 | Set, Cab Us, Operation Us, Tag Assy, Caution, Door Key Lock, Greasing Us, Window Us |
| Label(Quick Coupler) | 15 | Set, Q Ex, Operation, Lock, Pin Us, Warning Hitch, Sand Us |
| Accessory | 16 | Bag, Manual, Case, Ring |
| Muffler | 17 | Guard Assy, Pipe Assy, Exhaust, Clamp, Bolt, Nut, Washer |
| Air Cleaner | 18 | Assy, Element, Outer, Cover, Valve, Unload, Hose Assy, AIR/C a |
| Air Cleaner(W) | 19 | Hose Assy, AIR/C a, Assy, Element, Outer, Cover Assy, Clamp, Bolt |
| Accelerator(Bracket) | 20 | Cable, Bracket Assy, W Sepa, Pin, Snap, Washer, Bolt |
| Accelerator(Bracket)(Auto Deceleration) | 21 | - |
| Accelerator | 22 | - |
| Accelerator(Auto Deceleration) | 23 | - |
| Engine Mount | 24 | - |
| Radiator Shroud | 25 | - |
| Radiator & Sub Tank | 26 | - |
| Radiator Hose | 27 | - |
| Duct | 28 | - |
| Duct(Auto Deceleration) | 29 | - |
| Fuel Tank | 30 | - |
| Fuel Piping | 31 | - |
| Around the Engine | 32-33 | - |
| Battery(Minus Cable) | 34 | Harness, BAT.MINUS, Band, Washer, Bolt |
| Horn | 35 | Bolt |
| Starter Switch | 36 | Switch Assy, Starter, Cylinder Assy, Key, Nut, O-Ring |
| Seat Mount | 37-38 | Timer, Fuse, Monitor Assy, Relay, Switch, Harness |
| Pressure Switch | 39 | Switch, Pressure, Buzzer, Connector, O-Ring, Bolt |
| Travel Alarm | 40 | Buzzer, Cover, Screw, Bolt |
| Auto Deceleration | 41 | Harness Assy, Decel, Switch, Auto Decel, Control-Unit, Ad, Actuator |
| Quick Coupler(Switch Box) | 42 | Box, Switch Ex, Label, Switch, Switch Assy, Lamp, Indicator, Cord |
| Work Lamp | 43 | Harness, Boom Lamp, Lamp Assy, Work, Bulb, Bracket, Clamp, Grommet |
| Instrument Panel | 44 | Switch, Light, Cover, Switch Light, PTO-Swing, Switch Std |
| Heater | 45 | Harness Assy, Cabin, Switch, Wiper, Cover, Switch Wiper |
| Bracket(Gps) | 46 | Assy, Gps, Collar, Grommet |
| Plug | 47 | Clip, Tree, Grommet, Panel |
| Heater | 48 | Bracket Assy, Valve Assy, Duct Assy, Hose, Grommet |
| Sprocket | 49 | Bolt |
| Idler & Adjust(Rubber Crawler Spec.) | 50 | Idler Assy, Rubber, Bush, Seal, Floating, Shaft Assy, Idler, Adjuster Assy |
| Idler & Adjust(Iron Crawler Spec.) | 51 | - |
| Track Roller(Y Spec.)(To M60501) | 52 | - |
| Track Roller(K Spec.)(From M60502) | 53 | - |
| Carrier Roller | 54 | - |
| Crawler | 55 | - |
| Travel Pedal | 56 | - |
| Control Valve Plate | 57 | - |
| Travel Lever | 58 | - |
| Lever Spacer | 59 | - |
| Blade Lever | 60 | - |
| Armrest | 61 | - |
| Lock Lever & Stand | 62 | - |
| Travel Frame | 63 | - |
| Crawler Guard | 64 | - |
| Counter Weight | 65 | - |
| Turning Frame | 66 | - |
| Turning Bearing | 67 | Pin, Parallel, Bearing, Bolt |
| Cover(Multi) | 68 | Hinge Assy, Assy, Seal, Grommet, Shaft, Ring, Bolt |
| Cover(Turning Frame) | 69 | Pump, Reservoir, Valve Stand, Bolt |
| Cover(Travel Frame) | 70 | Washer, Bolt |
| Frame Guard(Left) | 71 | Guard Assy, Seal, Label, Holder, Washer, Bolt, Screw |
| Frame Guard(Right) | 72 | Guard Assy, Seal, Label, Washer, Bolt |
| Cover(Turning Frame)(Front - Left) | 73 | Assy, Bolt |
| Cover(Turning Frame)(Front - Right) | 74 | Assy, Bolt |
| Step(Canopy) | 75 | Floor Mat, Sponge, Washer, Bolt |
| Step(Cabin) | 76 | Floor Mat, Assy, Sponge, Washer, Bolt |
| Cover(Monitor)(Canopy) | 77 | Screw, Inpane, Stay Assy, Clamp, Band, Bolt |
| Cover(Monitor)(Cabin) | 78 | Screw, Assy, Inpane, Molding, Stay Assy, Clip, Tree |
| Cover(Lever) | 79 | Lever, Bolt, Rivet |
| Seat Mount | 80 | Cap, Engine Cover, Mount Assy, Seat, Seal, Rubber |
| Cover(Seat Mount) | 81 | Rubber, Contact, Handle, Lock, Assy, Manual, Sponge, Rubber Seal |
| Seat | 82 | Bolt, Plate Assy, Sus, Sponge, Assy, Plate, Stopper |
| Seat(Inner Parts) | 83 | Assy, Sus, Back, Box Assy, Manual, Belt Assy, Cushion |
| Handrail | 84 | Assy, L, R, Bolt, Nut |
| Bonnet(Rear) | 85 | Assy, Pin, Snap, Seal, Sponge, Hinge Assy, Handle, Lock |
| Bonnet(Front) | 86 | Assy, Stay, Key, Washer, Belt Cover, Rod Assy, Stopper, Lever Assy |
| Bonnet(Left) | 87 | Assy, L, Trim, Sponge, BON.L, Bolt |
| Bonnet(Right) | 88 | Assy, R Us, Washer, Seal, Sponge, Hinge Assy, Rf, Bolt |
| Canopy | 89 | Assy, ROPS, Label, Washer, Spring, Bolt, Clip, Tree |
| Canopy Lamp | 90 | Harness, Lamp B, Clamp, Band, Lamp, Work, Bulb, Bracket |
| Canopy Mount | 91 | - |
| Cabin(Accessory)(T Spec.)(To Maf295) | 92 | - |
| Cabin(Exterior) | 93 | - |
| Cabin(Interior) | 94 | - |
| Cabin(Glass) | 95 | - |
| Cabin(Wiper & Window Washer) | 96 | - |
| Cabin(Electric Parts) | 97 | - |
| Cabin Door | 98 | - |
| Cabin(Front Window) | 99 | Front Glass Assy, Washer, Screw, Grip, Bush, Nylon, Seal |
| 148.(87A)Cabin(Accessory)(Y Spec.)(From Maf296) | 100 | Band, Binding, Washer, Lamp, Bulb, Mirror |
| Hydraulic Pump Mount | 101 | Cover, Flywheel, Coupling, Bolt |
| Hydraulic Pump | 102-103 | Pump Assy, Plate, Swash, Barrel Kit, Cylinder, Block Assy, Valve, Seal |
| Hydraulic Pump(Quick Coupler Spec.) | 104-105 | Pump Assy, Plate, Swash, Barrel Kit, Cylinder, Block Assy, Valve |
| Boom Cylinder | 106 | Cylinder Assy, Repair Kit, Tube, Seal Kit, Piston, Nut, Lock |
| Arm Cylinder | 107 | Cylinder Assy, Seal, Dust Pin, Repair Kit, Tube, Bush, Pin, Seal Kit |
| Arm Cylinder(Quick Coupler Spec.) | 108 | Cylinder Assy, Seal, Dust Pin, Repair Kit, Tube, Bush, Pin, Seal Kit |
| Bucket Cylinder | 109 | - |
| Swing Cylinder | 110 | - |
| Blade Cylinder | 111 | - |
| Hitch Cylinder | 112 | - |
| Travel Motor | 113-114 | - |
| Turning Motor | 115 | - |
| 100.Accumulator | 116 | - |
| 101.Swivel Joint | 117 | - |
| 102.Control Valve(1/7) | 118 | Valve Assy, Cv Ex, Bolt |
| 103.Control Valve(2/7) | 119 | Valve Assy, Lock, Section Assy, O-Ring, Valve, Reverse, Piston |
| 104.Control Valve(3/7) | 120 | Valve Assy, Boom, Relief, Section Assy, O-Ring, Cover, Pilot |
| 105.Control Valve(4/7) | 121 | Valve Assy, Inlet, Section Assy, O-Ring, Cover, Pilot, Spool Assy |
| 106.Control Valve(5/7) | 122 | - |
| 107.Control Valve(6/7) | 123 | - |
| 108.Control Valve(7/7) | 124 | - |
| 109.Remote Control Valve(Right) | 125 | - |
| 110.Remote Control Valve(Left) | 126 | Valve Assy, Plug, Seal, Washer, Plate, Lever |
| 111.2-Way Valve | 127 | Knob, Stay, Valve Assy, Shaft, Bracket Assy, Block |
| 112.Solenoid Valve(P.T.O.) | 128 | Bracket, Valve Assy, Cartridge Assy, O-Ring, Block, Bolt |
| 113.Selector Valve | 129 | Bracket Assy, Bolt, Valve Assy |
| 114.Hyd. Oil Tank | 130 | Reservoir Kit, Sensor, Filter Assy, Valve Assy, Cap, Cover Assy |
| 115.Tank - Pump & Control Valve | 131 | Adapter, Tube Assy, Connector, O-Ring, Plug, Hose |
| 116.Control Valve - Turning Motor | 132 | Adapter, Elbow, O-Ring, Connector, Hose, Clamp |
| 117.Control Valve(Fitting)(1) | 133 | Elbow, Adapter, O-Ring, Connector Assy, Connector, Hose |
| 118.Control Valve(Fitting)(2) | 134 | Adapter, Connector, Block, Drain, Joint Assy, O-Ring |
| 119.Control Valve(Fitting)(3) | 135 | Nipple, Adapter, Bracket Assy, Connector, O-Ring, Block, Pilot |
| 120.Control Valve - Return & Drain | 136 | Band, Hose, Clamp |
| 121.Control Valve - Boom & Swing | 137 | Hose, Clamp, Band |
| 122.Control Valve - Swivel Joint | 138 | Elbow, O-Ring, Joint Assy, Nipple, Hose, Clamp |
| 123.Travel Frame | 139 | Adapter, Elbow, O-Ring, Connector Assy, Hose |
| 124.Arm & Bucket Link | 140 | Pipe Assy, Hose, Bolt, Washer |
| 125.P.T.O.(Control Valve - Boom) | 141 | Bracket Assy, Seal, Valve Assy, Connector, Hose, Clamp |
| 126.P.T.O.(Boom - Arm End) | 142 | Valve Assy, Stop, Plug, Tube Assy, PTO, Stay, Clamp, O-Ring |
| 127.P.T.O.(Solenoid Valve & Selector Valve) | 143 | Elbow, O-Ring, Adapter, Nipple, Connector, Hose, Clamp |
| 128.Quick Coupler(1)(Us, Nz Spec.) | 144 | Elbow, O-Ring, Tube, Hitch, Plate, Hose, Bolt |
| 129.Quick Coupler(1)(As Spec.) | 145 | Elbow, O-Ring, Tube, Hitch, Plate, Hose, Bolt |
| 130.Quick Coupler(2) | 146 | - |
| 131.Control Piping(1) | 147 | Elbow, O-Ring, Connector Assy, Joint, Hose, Clamp, Band |
| 132.Control Piping(2) | 148 | - |
| 133.Greasing | 149 | Hose, Joint, Grease, Nipple |
| 134.Boom Bracket | 150 | Shim, Bracket Assy, Boom, Bush, Pin, Ring, Nut |
| 135.Boom | 151 | Boom Assy, Bush, Seal, Hose Assy, Guard, Pin Assy, Spacer |
| 136.Arm | 152 | O-Ring, Spacer, Pin Assy, Arm Assy, Seal, Bush |
| 137.Bucket Arm & Link | 153 | Arm, Bucket, Pin Assy, Link Assy, Seal, Bush |
| 138.Quick Coupler(Body) | 154 | Collar, Bracket, Pin, Bolt, Plate, Guard Assy |
| 139.Bucket | 155 | Bucket Assy, Nut, Adapter, Cutter, Bolt, Tooth Kit |
| 140.Bucket Pin | 156 | Pin Kit, Bucket, Collar, Pin Assy, Nipple, Bolt, Nut |
| 141.Bucket Pin(Quick Coupler Spec.) | 157 | Pin Kit, Bucket, Pin Assy, Collar, Bolt, Nut |
| 142.Cover(Boom) | 158 | Cover, Boom, Boom Cyl L, Boom Cyl R, Washer, Spring |
| 143.Plug(Implement) | 159 | Clip, Tree |
| 144.Blade | 160 | Blade Assy, Spacer, Shim, Bush, Seal, Dust, Pin |
| 145.Label Kit(For Canada)(Optional) | 161 | Label Kit, Ca VIO25-6, Label, Sub-Tank Ca, Anti-Freeze Ca, Label J, Air Cleaner |
| 146.Remote Controller Kit(Optional) | 162 | Controller Kit, Rm Ex, Controller, Mobile, O, Antenna Assy, Harness Assy |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Fuse Rating (Slow Blow) | 60A | p. 32 |
| Diode Rating | 090 31 | p. 32 |
| Fuse Rating (Standard) | 5A | p. 37 |
| Pin Dimension (Flat Head) | 6X17 | p. 20 |
| Pin Dimension (Parallel) | 10X28 | p. 67 |
| Bolt Specification (Turning Bearing) | 10.9 12X60 | p. 67 |
| Bolt Specification (Canopy) | 10.912X 30 | p. 89 |
| Bolt Specification (Carrier Roller) | M14X 65 PLATED | p. 54 |
| O-Ring Dimension (Pressure Switch) | 1BP8.0 | p. 39 |
Yanmar ViO25-6A Common Problems This Manual Covers
Need the right slow blow fuse part number for Yanmar VIO25-6A excavator stuck at full RPM p. 32
Inspect the electrical parts diagram on page 32 to identify the exact harness components. Verify you are ordering the correct 60A slow blow fuse or the 090 31 rated diode. Match your specific serial number against the list to ensure you get the right electrical control parts.
Manual Section: Around the EngineNeed replacement hardware part numbers to resolve worn undercarriage and uneven track power p. 54
Verify the correct part number for the M14X 65 PLATED carrier roller bolts. Inspect the exploded chassis view on page 54 to locate all associated replacement components. Match the item numbers in the diagram to the corresponding hardware list before ordering your replacements.
Manual Section: Carrier RollerLooking for correct turning bearing hardware part numbers to fix severe swing drive vibration p. 67
Check the turning bearing diagram on page 67 to find your replacement items. Verify the exact part numbers for the 10X28 parallel pins and the 10.9 12X60 bolts. Use the index to cross-reference these fasteners with your machine production year to ensure proper fitment.
Manual Section: Turning BearingTrying to find the correct replacement pressure switch seal to fix a constant hydraulic leak p. 39
Inspect the pressure switch diagram on page 39 to identify the exact components. Verify the part number for the 1BP8.0 dimension O-ring before placing your order. Cross-reference the buzzer and connector part numbers in the same section if those items also show signs of fluid damage.
Manual Section: Pressure Switch
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