D100, D105, D110, D120, D125, D130, D140, D150, D155, D160, and D170 Lawn Tractors - Technical Manual - Introduction - Safety

Oct 23, 2026

Technical manual for John Deere lawn tractors covering models D100, D105, D110, D120, D125, D130, D140, D150, D155, D160, and D170. Written for experienced technicians, it outlines essential tools and safety practices, including the safety-alert symbol, signal word understanding, and safe maintenance procedures. The manual organizes service information by component groups and specifies key resources such as equipment, tools, service parts kits, specifications, wear tolerances, and torque values, supporting diagnosis, analysis, testing, and repair routines.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages5

Reading Time13 min

AccessFree to download

Section 10—General Information

Group 05—Safety

Group 20—General Specifications

Group 15—Fuel and Lubricants

Group 25—Machine Specifications

Section 20—Single Cylinder Engine Repair

Group 10—Single Cylinder Engine Repair

Section 25—V-Twin Engine Repair

Group 10—V-Twin Engine Repair

Section 30—Electrical Repair

Group 10—Component Location

Group 20—Wiring Harnesses (Model Year-2011)

Group 25—Wiring Harnesses (Model Year 2012)

Group 27—Wiring Harnesses (Model Year 2013-)

Group 30—Common Wiring Harnesses (All Model Years)

D100, D105, D110, D120, D125, D130, D140, D150, D155, D160, and D170 Lawn Tractors TECHNICAL MANUAL D100, D105, D110, D120, D125, D130, D140, D150, D155, D160, and D170 Lawn Tractors TM113219 15JUN23 (ENGLISH) John Deere Power Products PRINTED IN U.S.A. Introduction | Foreword | | | --- | --- | | This manual is written for an experienced technician. Essential tools required in performing certain service work are identified in this manual and are recommended for use. Live with safety: Read the safety messages in the introduction of this manual and the cautions presented throughout the text of the manual.
This is the safety-alert symbol. When you see this symbol on the machine or in this manual, be alert to the potential for personal injury.
Technical manuals are divided in two parts: repair and operation and tests. Repair sections tell how to repair the components. Operation and tests sections help you identify the majority of routine failures quickly. | Information is organized in groups for the various components requiring service instruction. At the beginning of each group are summary listings of all applicable essential tools, service equipment and tools, other materials needed to do the job, service parts kits, specifications, wear tolerances, and torque values. Technical Manuals are concise guides for specific machines. They are on-the-job guides containing only the vital information needed for diagnosis, analysis, testing, and repair.
Fundamental service information is available from other sources covering basic theory of operation, fundamentals of troubleshooting, general maintenance, and basic typeof failures and their causes. | | DX,TMIFC -19-20SEP22-1/1 | | Contents | Section 10—General Information
Group 05—Safety
Group 20—General Specifications
Group 15—Fuel and Lubricants
Group 25—Machine Specifications
Section 20—Single Cylinder Engine Repair
Group 10—Single Cylinder Engine Repair
Section 25—V-Twin Engine Repair
Group 10—V-Twin Engine Repair
Section 30—Electrical Repair
Group 10—Component Location
Group 20—Wiring Harnesses (Model Year-2011)
Group 25—Wiring Harnesses (Model Year 2012)
Group 27—Wiring Harnesses (Model Year 2013-)
Group 30—Common Wiring Harnesses (All Model Years)
Section 40—Gear Power Train Repair
Group 05—Component Location Group 10—Gear Power Train Repair
Section 42—Continuously Variable Transmission (CVT) Repair, D105
Group 10—CVT Repair
Section 45—Hydrostatic Power Train Repair
Group 05—Component Location
Group 10—Hydrostatic Power Train Repair
Section 50—Steering and Brake Repair
Group 10—Steering Repair
Group 20—Brake Repair
Section 60—Attachments Repair
Group 10—Component Location Group 15—Attachments Repair
Section 70—Miscellaneous Repair
Group 10—Miscellaneous Repair | Section 220—Single Cylinder Engine Operation, Tests, and Adjustments
Group 10—Diagnostics
Group 20—Tests and Adjustments
Section 225—V-Twin Engine Operation, Tests, and Adjustments
Group 10—Diagnostics
Group 20—Tests and Adjustments
Section 230—Electrical Operation, Tests, and Adjustments
Group 10—Theory of Operation
Group 20—Diagnostics
Group 30—Tests and Adjustments
Group 40—Schematics (Model Year-2011)
Group 45—Schematics (Model Year 2012-) Group 50—Connector Information
Section 240—Gear Power Train Operation,
Tests, and Adjustments
Group 10—Theory of Operation
Group 20—Diagnostics
Group 30—Tests and Adjustments
Section 242—Continuously Variable Transmission (CVT) Operation, D105
Group 10—Component Location Group 20—Theory of Operation
Group 30—Diagnostics
Section 245—Hydrostatic Power Train Operation, Tests, and Adjustments
Group 10—Theory of Operation
Group 20—Diagnostics
Group 30—Tests and Adjustments
Section 250—Steering and Brake Operation,
Tests, and Adjustments
Group 10—Steering Component Location Group 20—Steering Tests and A

FAQs

Who is this manual written for?

This manual is written for an experienced technician.

How are technical manuals divided in this document?

They are divided into two parts: repair and operation/tests. Repair sections explain how to repair components, while operation and tests sections help identify routine failures quickly.

What kinds of safety information does the manual reference?

It emphasizes reading safety messages in the introduction and cautions throughout the text, including how to recognize the safety-alert symbol and follow safety instructions.

Oct 23, 2026

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