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Yanmar

Yanmar YM155 YM155D Tractor Service Repair Workshop Manual

Yanmar YM155 YM155D Tractor Service Repair Workshop Manual

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Machine data plate
Brand
Yanmar
Equipment
Tractors
Models covered
YM Models
Format
PDF, searchable, print-ready
Delivery
Instant download after checkout
Language
English

What happens after you pay

  • Download link opens on the order page immediately
  • The same link is emailed to you — re-download any time
  • Open on phone, tablet or PC; print only the pages you need
  • Not sure it covers your serial range? Ask us before you buy
🏷️ Basic Information
Identification
Make:
Yanmar
Model:
YM155 / YM155D
Model Variant:
YM155 (2WD), YM155D (4WD)
Production Years Covered:
Not specified in manual; likely 1970s-1980s era. Check serial number for exact year.
👋 Introduction
Market Position
Target Audience:
Independent mechanics, farm owners, agricultural professionals, and DIY enthusiasts with mechanical aptitude seeking factory-level repair information.
Competitive Analysis
Advantage:
Provides vehicle-specific, dealer-level technical data, ensuring accuracy and completeness unlike generic repair guides.
Key Features
Content Highlight:
Includes step-by-step instructions, detailed diagrams, illustrations, wiring schematics, and essential specifications for diagnosis and repair.
📋 Manual Details
Coverage Areas
Primary Coverage:
Comprehensive service, repair, and troubleshooting for Yanmar YM155 and YM155D tractors.
Page Count
Estimated Page Count:
Varies by specific edition, but designed to be comprehensive. Typical for workshop manuals of this era and complexity can range from 300-800+ pages.
Manual Type
Type:
Service Repair Workshop Manual
Language
Language:
English
Format
Digital Format:
PDF
Delivery Method:
Instant download
📖 Manual Coverage
Systems Covered
Engine:
Engine overhaul, troubleshooting, fuel system, cooling system, lubrication system, ignition/starting system, emissions control (if applicable).
Transmission:
Manual and/or powershift transmission repair, clutch system, drivetrain components (propshafts, differentials, axles).
Hydraulics:
Hydraulic system components, pump, cylinder, control valves, power take-off (PTO) hydraulics, hitch control.
Electrical:
Wiring diagrams, charging system, starting system, lighting, gauges, starter motor, alternator, battery service.
Chassis And Body:
Frame, front axle, steering system, braking system, wheels, tires, body panels, operator station, fenders.
Steering System:
Mechanical steering system, linkage, tie rods, steering arms, and potential power steering components (if equipped). Specific lubrication and adjustment points.
Braking System:
Detailed procedures for brake shoe inspection, adjustment, relining, and pedal free play.
Cooling System:
Radiator, fan, water pump, thermostat, hoses, and coolant recovery system diagnosis and repair.
Exhaust System:
Muffler, exhaust manifold, and pipe inspection and replacement.
Operator Controls:
Detailed explanation and repair procedures for steering wheel, brake pedals, clutch pedal, gear levers, throttle control, and PTO engagement.
Procedures Included
Maintenance:
Scheduled maintenance, fluid changes, filter replacements, lubrication points, inspections.
Troubleshooting:
Diagnostic procedures for common and uncommon issues, symptom-based troubleshooting charts.
Repair:
Step-by-step repair instructions for all major components and systems, including disassembly, cleaning, inspection, and reassembly.
Adjustment:
Precise adjustment procedures for engine timing, valve clearance, brake systems, clutch engagement, and hydraulic controls.
Engine Rebuild:
Comprehensive engine overhaul procedures, including cylinder head removal/installation, piston and ring replacement, crankshaft and bearing service, camshaft and valve train servicing.
Hydraulic Component Service:
Detailed disassembly, inspection, and reassembly of hydraulic pump, control valves, cylinders, and filters. Includes troubleshooting for common hydraulic faults.
Wiring Harness Repair:
Instructions for tracing and repairing faults within the tractor's electrical wiring harness, including connector identification.
Technical Depth
Depth:
Detailed technical specifications, torque values, clearances, tolerances, and diagnostic data equivalent to dealer-level service.
Diagnostic Charts:
Includes comprehensive diagnostic charts that correlate symptoms to potential causes and repair procedures.
Schematics:
Clear, detailed wiring diagrams and hydraulic schematics for accurate troubleshooting and repair of electrical and hydraulic systems.
Parts Information
Parts Manual Included:
N/A - not specified; this is a service repair manual, not a parts manual. Parts diagrams may be included for reference.
📊 Manual Specifications
File Format
File Type:
PDF
Compatibility:
PC, Mac, and compatible mobile devices/e-readers
Requirements:
PDF reader software
Searchability:
Text searchable if generated from digital source; may vary.
Print Quality
Printable:
Yes, individual pages can be printed for on-the-job use, allowing users to keep originals clean.
Binding Type
Binding Description:
Digital format (PDF) eliminates the need for traditional binding; printable pages offer flexibility.
Paper Type
Paper Type Description:
N/A (Digital Format) - Printing allows for user choice of paper type for durability.
⚙️ Engine Specifications
Primary Engine
Engine Model:
Typically Yanmar 3T72 Series (or similar displacement diesel engine for this class of tractor). Specific engine code would be present in the manual.
Performance
Horsepower Range:
15-20 HP, depending on the specific model and configuration. The manual provides exact specifications.
Fuel System
Type:
Diesel
Injection Pump:
Precision fuel injection system; detailed service information in manual.
🔧 Transmission
Standard Transmission
Type:
Manual gear transmission with multiple forward and reverse gears (typical of this era).
Optional Transmission
Four-Wheel Drive (YM155D):
The YM155D model includes front-wheel drive for enhanced traction; the manual covers the additional transfer case and front axle components.
Features
Clutch:
Dry single-plate type; adjustment and rebuild covered.
Differential Lock:
Manual engagement for rear wheels; service information provided.
📐 Dimensions
Exterior
Wheelbase:
Specifications not provided in manual excerpt; refer to manual for exact dimensions.
Length:
Specifications not provided in manual excerpt; refer to manual for exact dimensions.
Weights
Curb Weight:
Specifications not provided in manual excerpt; refer to manual for exact weights.
🛡️ Safety Features
Ratings / Crash Test Information
Crash Test Ratings:
N/A - Tractors are not subject to automotive crash tests.
Active Features
Rollover Protection (ROPS):
May be equipped or available; not standard on all models. Manual includes installation/service information if present.
Passive Features
Seat Belt:
Provided where ROPS is fitted.
Safety Switches:
Includes neutral start switch and PTO safety switch where applicable.
💡 Technology Features
Infotainment
Audio System:
Not applicable - tractor models do not come with factory audio systems.
Driver Assistance
Active Systems:
None - this is a basic utility tractor without electronic driver aids.
🔧 Maintenance
Service Intervals
Oil Change Interval:
Typically every 100 hours or annually, as specified in the manual.
Filter Replacement:
Per manual schedule (oil, fuel, air).
Hydraulic Fluid Change:
Recommended per manual (often every 500 hours).
Fluid Specifications
Engine Oil:
Specified viscosity and API class in manual; typical for diesel engines.
Transmission / Hydraulic Fluid:
Use Yanmar specified fluid or equivalent; details in manual.
Coolant:
Ethylene glycol-based; concentration and change intervals per manual.
Known Issues / Common Wear Items
Common Wear Items:
Engine fuel injectors, water pump seals, steering linkage wear, and electrical connections.
📚 Vehicle History
Brand Heritage
Manufacturer:
Yanmar Co., Ltd., a Japanese manufacturer with a heritage in diesel engine and agricultural machinery innovation.
Model Evolution
Series:
YM series, compact utility tractors.
Evolution:
YM155 and YM155D are part of the YM series; later models evolved with improved features. Manual covers this specific generation.
Production Location
Country:
Japan
🏆 Awards & Recognition
Recognitions for the Model or Era
Awards:
Specific awards not documented in manual; however, Yanmar tractors were known for their reliability and durability in the era.

Delivery & file format

This is a digital PDF download, not a printed book. After payment the download link appears on your order confirmation page and is emailed to the address you entered. Files open in any PDF reader on phone, tablet or computer and can be printed.

Check the serial range before you buy

Manufacturers change procedures and part numbers by serial-number break. If your data plate shows a serial prefix that is not listed above, contact us with the model and serial number and we will confirm coverage before you order.

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