STX30, STX38, and STX46
Lawn Tractors
TECHNICAL
MANUAL
John Deere
Worldwide Commercial and
Consumer Equipment Division
TM1561 (15Mar97)
Replaces TM1561 (01Sep95) and
TM1418 (26Oct92)
Litho in U.S.A
, M55912 M55913
STX38 Gear Drive STX38 Hydrostatic Drive
M85680
STX38 Motorsport Edition
M58332 M58333
STX46 Gear Drive STX46 Hydrostatic Drive
, INTRODUCTION
This technical manual is written for an experienced
technician and contains sections that are specifically for
this product. It is a part of a total product support Safety
program.
Specifications and
Information
The manual is organized so that all the information on a
particular system is kept together. The order of grouping Engine
is as follows:
• Table of Contents
• Specifications
• Theory of Operation
• Troubleshooting Diagram
• Diagnostics
• Tests & Adjustments Electrical
• Repair
Note: Depending on the particular section or system Power Train
being covered, not all of the above groups may be
used. (Gear)
Power Train
Power Train
(Hydrostatic)
Each section will be identified with a symbol rather than a
number. The groups and pages within a section will be Steering
consecutively numbered.
All information, illustrations and specifications in this
manual are based on the latest information available at
the time of publication. The right is reserved to make
changes at any time without notice.
We appreciate your input on this manual. To help, there
are postage paid post cards included at the back. If you
find any errors or want to comment on the layout of the
manual please fill out one of the cards and mail it back to
us.
Miscellaneous
COPYRIGHT© 1997
JOHN DEERE HORICON WORKS
Horicon, Wisconsin
All rights reserved
3/12/97 1-1
, SAFETY
RECOGNIZE SAFETY HANDLE FLUIDS SAFELY-AVOID
INFORMATION FIRES
Be Prepared For Emergencies
This is the safety-alert symbol. When you see this
symbol on your machine or in this manual, be alert to
the potential for personal injury.
Follow recommended precautions and safe servicing
practices.
Understand Signal Words
A signal word—DANGER, WARNING, or CAUTION—
is used with the safety-alert symbol. DANGER
identifies the most serious hazards.
DANGER or WARNING safety signs are located near When you work around fuel, do not smoke or work near
specific hazards. General precautions are listed on heaters or other fire hazards.
CAUTION safety signs. CAUTION also calls attention
to safety messages in this manual. Store flammable fluids away from fire hazards. Do not
incinerate or puncture pressurized containers.
Make sure machine is clean of trash, grease, and
REPLACE SAFETY SIGNS debris.
Do not store oily rags; they can ignite and burn
spontaneously.
Be prepared if a fire starts.
Keep a first aid kit and fire extinguisher handy.
Keep emergency numbers for doctors, ambulance
service, hospital, and fire department near your
telephone.
Replace missing or damaged safety signs. See the
machine operator’s manual for correct safety sign
placement.
1-2 3/12/97
Lawn Tractors
TECHNICAL
MANUAL
John Deere
Worldwide Commercial and
Consumer Equipment Division
TM1561 (15Mar97)
Replaces TM1561 (01Sep95) and
TM1418 (26Oct92)
Litho in U.S.A
, M55912 M55913
STX38 Gear Drive STX38 Hydrostatic Drive
M85680
STX38 Motorsport Edition
M58332 M58333
STX46 Gear Drive STX46 Hydrostatic Drive
, INTRODUCTION
This technical manual is written for an experienced
technician and contains sections that are specifically for
this product. It is a part of a total product support Safety
program.
Specifications and
Information
The manual is organized so that all the information on a
particular system is kept together. The order of grouping Engine
is as follows:
• Table of Contents
• Specifications
• Theory of Operation
• Troubleshooting Diagram
• Diagnostics
• Tests & Adjustments Electrical
• Repair
Note: Depending on the particular section or system Power Train
being covered, not all of the above groups may be
used. (Gear)
Power Train
Power Train
(Hydrostatic)
Each section will be identified with a symbol rather than a
number. The groups and pages within a section will be Steering
consecutively numbered.
All information, illustrations and specifications in this
manual are based on the latest information available at
the time of publication. The right is reserved to make
changes at any time without notice.
We appreciate your input on this manual. To help, there
are postage paid post cards included at the back. If you
find any errors or want to comment on the layout of the
manual please fill out one of the cards and mail it back to
us.
Miscellaneous
COPYRIGHT© 1997
JOHN DEERE HORICON WORKS
Horicon, Wisconsin
All rights reserved
3/12/97 1-1
, SAFETY
RECOGNIZE SAFETY HANDLE FLUIDS SAFELY-AVOID
INFORMATION FIRES
Be Prepared For Emergencies
This is the safety-alert symbol. When you see this
symbol on your machine or in this manual, be alert to
the potential for personal injury.
Follow recommended precautions and safe servicing
practices.
Understand Signal Words
A signal word—DANGER, WARNING, or CAUTION—
is used with the safety-alert symbol. DANGER
identifies the most serious hazards.
DANGER or WARNING safety signs are located near When you work around fuel, do not smoke or work near
specific hazards. General precautions are listed on heaters or other fire hazards.
CAUTION safety signs. CAUTION also calls attention
to safety messages in this manual. Store flammable fluids away from fire hazards. Do not
incinerate or puncture pressurized containers.
Make sure machine is clean of trash, grease, and
REPLACE SAFETY SIGNS debris.
Do not store oily rags; they can ignite and burn
spontaneously.
Be prepared if a fire starts.
Keep a first aid kit and fire extinguisher handy.
Keep emergency numbers for doctors, ambulance
service, hospital, and fire department near your
telephone.
Replace missing or damaged safety signs. See the
machine operator’s manual for correct safety sign
placement.
1-2 3/12/97
