Looking for the exact factory part numbers to rebuild your mini excavator? This 210-page Parts Catalog PDF breaks down the entire undercarriage, boom, and hydraulic piping systems. You get crystal-clear exploded views of the main boom cylinder, complete with seal kit breakdowns and retainer diagrams. Open to the control box section to find every wire harness assembly and battery clamp listed with its direct replacement code. Verify you have the correct size 80 snap ring for the front idler pulley, and confirm the exact P-20.0 O-ring needed for the hydraulic swivel joint before placing your parts order.
What's Inside This Yanmar YB201 Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Truck Shoe | 3-4 | Crawler Assy, Plate Assy, Shoe, Bush, Shoe Plate, Pin, Track |
| Truck Roller | 5-6 | Assy, Shaft, Cover, Seal, Bearing, Circlip, Bracket, Roller |
| Front Idler Pulley | 7-8 | Idler Assy, Shaft, Idler, Bearing, Seal, Snap Ring, Collar |
| Driving Wheel | 9-12 | Motor Assy, Drive, SPROCKET.DRIVE, Valve, Count, Balance |
| Blade | 13-20 | Pin, Collar, Cotter Pin, Nipple B, Grease, Cylinder |
| Main Frame | 21-28 | Lock Pin, Under Cover, Washer, Bolt, Shaft, Pin |
| Control Lever (Driving) | 29-32 | Plate, Lever, Bracket, Yoke Rod, Rod, Knob |
| Control Lever (Operation) R | 33-36 | Lever Stand, Lever, Plate, Bracket, Yoke, Knob |
| Control Lever (Operation) L | 37-44 | Lever STAND(L), Lever, Bracket, LEVER(L), Yoke, Knob (L) |
| Control Lever (Blade) | 45-52 | Bracket, Lever, Rod-End, Bush, Grip, Lever Shaft |
| Control Box | 53-76 | Wire Harness Assy, Lamp Guard, Horn, Battery Clamp, Cable, Battery |
| Hydraulic Oil Tank | 77-78 | Fuel Oil Tank Assy, Sump, Cover, Gauge, Level, Strainer Assy |
| F.O. Tank | 79-80 | Fuel Oil Tank Components |
| Bonnet Relation | 81-92 | Bonnet, Hood, Cover, Latch, Hinge |
| Canopy | 93-100 | Steel Cabin (Optional), Frame, Panel, Glass |
| Boom & Arm | 101-106 | Boom, Arm, Pin, Bushing, Link |
| Bucket | 107-110 | Pin, Bushing, Tooth, Adapter |
| Hyd. Oil Piping (Boom & Arm) | 111-132 | Labels, Swivel Joint, Control Valve, Hose, Pipe |
| Main Boom Cylinder | 133-146 | Seal Set, Rod, Piston, Bush, Cover, Retainer |
| Arm Cylinder | 147-150 | Seal Kit, Rod, Piston, Bush, Cover, Holder, Packing |
| Bucket Cylinder | 151-152 | Seal Kit, Rod, Piston, Cylinder Tube, End Cap, Wiper |
| Blade Cylinder | 153-154 | Seal Set, Rod, Piston, Bush, Cover, Holder, Gasket |
| Swing Cylinder | 155-210 | Seal Set, Rod, Piston, Bush, Cover, Retainer, Cushion |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| O-Ring 1B P 70 Size | P 70 | p. 8 |
| Snap Ring 80 Size | 80 | p. 8 |
| O-Ring 1B P-20.0 Size | P-20.0 | p. 18 |
Yanmar YB201 Common Problems This Manual Covers
Yanmar YB201 track tension assembly fails to hold grease and track continuously slacks off under load p. 8
Inspect the front idler pulley exploded view on page 8. Replace the leaking seal and verify the O-Ring 1B P 70 Size matches the P 70 dimension. Order the replacement shaft, collar, and bearing components from the parts index before reassembly.
Manual Section: Front Idler PulleyFront idler wheel wobbles excessively during travel with loud grinding noises coming from the undercarriage p. 8
Check the front idler pulley parts list on page 8. Locate the correct part numbers for the bearing and idler assembly. Verify the Snap Ring 80 Size is rated at 80 before ordering replacement snap rings to completely secure the track shaft.
Manual Section: Front Idler PulleyDozer blade drifts down during grading operations due to severe fluid weeping at the cylinder rod gland p. 18
Review the blade cylinder parts breakdown on page 18. Locate the exact part number for the seal set and rod packing. Ensure you match the O-Ring 1B P-20.0 Size to exactly P-20.0 when ordering the replacement gasket and bush components.
Manual Section: BladeFrequently Asked Questions
What are the replacement specifications for Hydraulic hoses?
The manual lists various hydraulic hoses and pipes with their part numbers and general descriptions. For example, part E1905512140 is a "HOSE,HIGH-PRESSURE" found on page 68, and part E1530526016 is a "HOSE,LOW-PRESSURE" also on page 68. Another example is "PIPE 9X 850" with part number E1908109085, found on page 112, which implies a 9mm diameter and 850mm length. The manual provides part numbers and general descriptions but does not include detailed replacement specifications such as specific pressure ratings or material composition beyond what is implied by the description.
What are the replacement specifications for Engine filters?
The manual provides part numbers and general descriptions for various filter-related components. For instance, part E1552002012 is a "SCREEN,FUEL OIL TANK" found on page 78. Other examples include "FILTER, SUCTION" (part E1550100400) and "ELEMENT, FILTER" (part E1551100700), both listed on page 76. The manual lists these components by part number and a brief description, but it does not specify detailed replacement specifications like micron ratings or specific dimensions.
How do you fix track tension assembly fails to hold grease and track continuously slacks off under load?
Inspect the front idler pulley exploded view on page 8. Replace the leaking seal and verify the O-Ring 1B P 70 Size matches the P 70 dimension. Order the replacement shaft, collar, and bearing components from the parts index before reassembly.
How do you fix front idler wheel wobbles excessively during travel with loud grinding noises coming from the undercarriage?
Check the front idler pulley parts list on page 8. Locate the correct part numbers for the bearing and idler assembly. Verify the Snap Ring 80 Size is rated at 80 before ordering replacement snap rings to completely secure the track shaft.
How quickly can I access this manual after buying?
You get a 210-page searchable PDF that downloads instantly after checkout. Open it on your laptop, tablet, or phone, and bring it right to the shop floor.
Is this Parts Catalog printable?
No restrictions at all. Print individual pages, full chapters, or the entire manual. The PDF is completely unlocked.
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