Kubota Zero Turn Mower Z231JW-AU Workshop Manual – PDF DOWNLOAD

Kubota Zero Turn Mower Z231JW-AU Workshop Manual – PDF DOWNLOAD

FILE DETAILS:

Kubota Zero Turn Mower Z231JW-AU Workshop Manual – PDF DOWNLOAD

Language : English
Pages : 174
Downloadable : Yes
File Type : PDF
Size: 66.1 MB

IMAGES PREVIEW OF THE MANUAL:

DESCRIPTION:

Kubota Zero Turn Mower Z231JW-AU Workshop Manual – PDF DOWNLOAD

TO THE READER:
This workshop manual provides safety information for service activity, general information such as specifications and
dimensions of the machine, mechanisms and structure descriptions of the machine, and service procedures.
Safety
This section contains safety service descriptions and safety label information.
General
This section contains general instructions, tightening torques, general machine information and special tools.
Maintenance
This section contains information for the recommended oil and general maintenance procedures.
Each section basically consists of mechanism and servicing.
Mechanism
Mechanism part contains information and explanations for the structure, functions, and specifications of the machine
or component parts. This part should be comprehended before proceeding with troubleshooting, disassembling,
assembling, and servicing works.
Servicing
Servicing part contains information and procedures for maintenance, troubleshooting and repair works. The reader
should follow these instructions in order to satisfy any servicing work safely, correctly and quickly.
In this WSM, service specifications and service limits are defined as followings.
Service specifications:
Specification which corresponds to new machine’s ex-factory. It is based on quality standard, drawings, or actual
measurements conducted by Kubota. This value is used to determine whether there is a problem with the machine in
the event of a troubleshooting. However, it is necessary to consider degradation due to wear, based on the operating
time of the machine, application or maintenance condition.
Service limits:
Service limit is a value corresponding to the recommended performance limit by taking long term-use wear into
account. When the service limit is reached , the machine is required to have proper repair, overhaul or replacement in
order to keep safe and adequate performance.
All of the illustrations, photographs, specifications, and other information in this manual were created based on the
latest model at the time of publication.
The parts names used in this manual are unified into names representing the functions of the parts. Therefore, it does
not necessarily correspond to the names used in other materials (parts list, operators manual etc.) and the name on
the label/ identification plates on the product.
Kubota reserves the right to change all information at any time without notice.

The Kubota Zero Turn Mower Z231JW-AU is a high-performance mower designed for residential and commercial use. Here are some of its key features and benefits:

1. Powerful engine: The Z231JW-AU is powered by a 23 horsepower Kawasaki engine, which delivers reliable power and performance. The engine is air-cooled and features a high-performance oil filter, ensuring long-lasting durability.
2. Large cutting deck: The mower features a large 54-inch cutting deck, which is ideal for cutting large lawns and commercial properties quickly and efficiently. The deck is made of durable steel and features a deep design, ensuring a clean, even cut.
3. Comfortable operator platform: The Z231JW-AU features a comfortable operator platform, which includes an adjustable high-back seat with armrests and a cup holder. The controls are easy to reach and use, making it simple for operators to adjust the speed and cutting height as needed.
4. Easy maneuverability: The mower has a zero-turn design, which allows for exceptional maneuverability around obstacles and in tight spaces. The dual hydrostatic transmission provides smooth and precise control, making it easy to change direction and maintain control at all times.
5. Durable construction: The Z231JW-AU is built to last, with a heavy-duty frame and durable components. The deck is made of steel, and the wheels are heavy-duty, ensuring that the mower can handle tough terrain and rough conditions.
6. Versatile: The mower is compatible with a range of attachments, including baggers, mulchers, and spreaders, making it a versatile machine that can handle a range of tasks beyond cutting grass.
7. Easy maintenance: The Z231JW-AU is designed to be easy to maintain, with features such as a full-opening hood and easy-to-reach service points. The mower also comes with a Kubota dealer network that provides comprehensive service and support to owners.

Overall, the Kubota Zero Turn Mower Z231JW-AU is a high-quality, reliable mower that is ideal for residential and commercial users. Its powerful engine, large cutting deck, and comfortable operator platform make it easy to operate and maintain, while its durable construction and versatile design ensure that it can handle a range of tasks with ease.

TABLE OF CONTENTS:

Kubota Zero Turn Mower Z231JW-AU Workshop Manual – PDF DOWNLOAD

1 SAFETY
SAFETY FIRST 1-1
1 Working precautions 1-1
2 Preparing for emergencies 1-1
3 Working cautions 1-2
4 Starting machine safely 1-2
5 Preventing fires 1-3
6 Preventing acid burns 1-3
7 Avoiding high pressure fluid 1-3
8 Avoiding hot exhaust 1-4
SAFETY DECALS 1-5
1 Safety decals 1-5
2 Care of danger, warning and caution labels 1-9
2 GENERAL
GENERAL PRECAUTIONS 2-1
TIGHTENING TORQUES 2-3
1 General use screws, bolts, and nuts 2-3
2 Stud bolts 2-3
3 Hydraulic fittings 2-4
3 1 Hydraulic hose fittings 2-4
3 2 Hydraulic pipe cap nuts 2-4
3 3 Adapters, elbows, and others 2-5
4 Metric screws, bolts and nuts 2-6
5 American standard screws, bolts and nuts with UNC or UNF threads 2-6
6 Plugs 2-6
PRODUCT IDENTIFICATION 2-7
SPECIFICATIONS 2-9
1 Specifications for 2231 KW-AU 2-9
2 Specifications for RCK42P-122Z 2-11
DIMENSIONS 2-13
HANDLING PRECAUTIONS FOR ELECTRICAL PARTS AND WIRING 2-15
1 Handling wire harness 2-15
2 Handling the battery 2-16
3 Handling fuses 2-17
4 Handling connectors 2-17
5 Wiring color 2-18
6 Handling of circuit tester 2-18
IMPLEMENT LIMITATIONS 2-19
SPECIAL TOOLS 2-21
1 Special tools for machine 2-21
1 1 Spanner wrench 2-21
3 MAINTENANCE
LUBRICANTS AND FUEL 3-1
SERVICE INTERVALS 3-3
CHECK AND MAINTENANCE 3-5
1 Daily check 3-5
1 1 Checking engine oil level 3-5
1 2 Checking amount of fuel and refueling 3-6
1 3 Checking and cleaning the air intake screen 3-7
1 4 Checking the tire pressure 3-7
1 4 1 Inflation pressure 3-7
1 5 Checking movable parts 3-8
2 Check points every 50 hours 3-8
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2 1 Checking engine start system 3-8
2 2 Checking OPC system 3-9
2 3 Checking the muffler and spark arrester (if equipped) 3-9
3 Check points of every 100 hours 3-9
3 1 Changing engine oil 3-9
3 2 Cleaning the air cleaner paper element 3-10
3 3 Cleaning engine shroud 3-11
3 4 Checking the spark plug 3-12
3 5 Checking the fuel filter 3-12
3 6 Checking the battery condition 3-13
3 6 1 Charging the battery 3-14
3 6 2 Storing the battery 3-15
3 7 Adjusting the throttle cable 3-15
3 8 Adjusting the choke cable 3-15
4 Check points of every 200 hours 3-16
4 1 Replacing engine oil filter 3-16
4 2 Replacing the air cleaner paper element 3-16
5 Check points of every 300 hours 3-17
5 1 Cleaning combustion chambers 3-17
5 2 Checking and adjusting engine valve clearance 3-17
6 Check points of every 500 hours 3-17
6 1 Adjusting the electric clutch 3-17
7 Check points of every 1 year 3-18
7 1 Replacing fuel filter 3-18
7 2 Checking fuel lines 3-18
7 3 Checking the muffler and spark arrester (if equipped) 3-19
7 4 Replacing spark plug 3-19
7 5 Checking and adjusting engine valve clearance 3-19
8 Check points of every 4 years 3-19
8 1 Replacing fuel line 3-19
9 Service as required 3-19
9 1 Replacing fuses 3-19
9 2 Checking and replacing blade 3-20
9 3 Replacing mower belt 3-21
4 ENGINE
iv
MECHANISM ··· ····· ············ ···· ····· ····· ····· ·········· ·· ········ ·· ··· ······· ···· ····· ·· ··· ······ ···· ·· ···· ··· ·· ······ ·· ···· ····· ·· ··· ··· ·· ······· ····· ·· ··4-1
1 Structure of engine 4-1
2 Fuel system ·· ·· ······ ··· ········ ····· ···· ······· ··· ··· ··· ··· ····· ·········· ···· ········· ···· ····· ········ ···· ······· ·· ···· ······ ······ ····· ······· ··· ··· ·4-2
2 1 Structure of fuel system 4-2
3 Lubrication system 4-3
4 Cooling system 4-3
SERVICING 4-5
1 Troubleshooting for engine 4-5
2 Service specifications for engine 4-8
3 Tightening torques for engine 4-9
4 Checking and adjusting 4-10
5 Disassembling and assembling 4-10
5 1 Separating engine 4-10
5 1 1 Removing battery 4-10
5 1 2 Removing tension spring 4-10
5 1 3 Removing electric clutch 4-10
5 1 4 Removing HST pulley 4-11
5 1 5 Removing rear guard ··· ·· ······ ··············· ······ ······ ············ ···· ········ ··· ········· ·· ··· ·· ···· ···· ·· ········ ·· ··· ······ 4-12
5 1 6 Disconnecting fuel hoses····· ········ •··· ···· ········· ·· ······ ········ ··· ··· ······ ············ ··· ···· ·· ·· ······ ··· ·· ··· ··· ··· ··· 4-13
5 1 7 Disconnecting cables 4-13
5 1 8 Disconnecting wire harness 4-14
5 1 9 Removing engine 4-15
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5 1 10 Removing muffler 4-16
5 TRANSAXLE
MECHANISM 5-1
1 Function of transaxle 5-1
2 Hydraulic circuit of transaxle 5-1
3 Structure of transaxle 5-2
4 Transaxle specification 5-3
5 Parking brake 5-4
5 1 Structure of parking brake 5-4
SERVICING 5-5
1 Troubleshooting for transaxle 5-5
2 Service specifications for transaxle 5-7
3 Tightening torques for transaxle 5-8
4 Checking and adjusting 5-9
4 1 Motion control lever 5-9
4 1 1 Adjusting HST neutral 5-9
4 1 2 Adjusting maximum speed 5-9
4 1 3 Adjusting motion control lever alignment 5-10
5 Disassembling and assembling 5-11
5 1 Separating transaxle 5-11
5 1 1 Removing rear wheel 5-11
5 1 2 Loosening HST belt 5-11
5 1 3 Disconnecting rods 5-11
5 1 4 Separating transaxle 5-12
5 2 Disassembling transaxle 5-12
5 2 1 Removing hub 5-12
5 2 2 Draining transaxle oil 5-13
5 2 3 Purging transaxle 5-14
5 2 4 Removing brake arm assembly 5-14
5 2 5 Removing control arm assembly 5-15
5 2 6 Removing fan and pulley 5-15
5 2 7 Removing side cover 5-15
5 2 8 Removing axle shaft, reduction gears, and expansion plate 5-17
5 2 9 Removing input shaft 5-18
5 2 10 Removing bypass arm 5-19
5 2 11 Removing swash plate 5-19
5 2 12 Removing center section 5-20
5 2 13 Removing center section filter 5-21
5 2 14 Removing cylinder blocks 5-21
5 3 Removing fuel tank 5-22
5 3 1 Removing battery 5-22
5 3 2 Removing seat 5-23
5 3 3 Removing R H fender 5-23
5 3 4 Removing front cover 5-24
5 3 5 Removing fuel tank 5-24
5 4 Removing ROPS 5-24
5 4 1 Removing battery 5-24
5 4 2 Removing seat 5-25
5 4 3 Removing R H fender 5-26
5 4 4 Removing L H fender 5-26
5 4 5 Removing ROPS 5-26
5 5 Removing motion control lever 5-27
5 5 1 Removing battery 5-27
5 5 2 Removing seat 5-27
5 5 3 Removing motion control lever 5-27
6 FRONT AXLE
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MECHANISM 6-1
1 Structure of front axle 6-1
SERVICING 6-3
1 Troubleshooting for front axle 6-3
2 Tightening torques for front axle 6-4
3 Disassembling and assembling 6-5
3 1 Separating front wheel and wheel bracket 6-5
3 1 1 Removing front wheel 6-5
3 1 2 Removing wheel bracket 6-5
7 LIFT SYSTEM
MECHANISM 7-1
1 Structure of lift system 7-1
SERVICING 7-3
1 Troubleshooting for lift system 7-3
2 Tightening torques for lift system 7-4
3 Disassembling and assembling 7-5
3 1 Removing link shafts 7-5
3 1 1 Removing mower 7-5
3 1 2 Removing cam 7-5
3 1 3 Removing lift shafts 7-5
8 ELECTRICAL SYSTEM
MECHANISM 8-1
1 Wiring diagram 8-1
2 Starting system· ······ ·· ··· ··· ··· ···· ······ ·· ··· ···· ··· ···· ···· ···· ······· ···· ······· ········ ······· ···· ·· ··· ······· ··· ····· ····· ···· ···· ······· ·· ····· · 8-2
2 1 Electrical circuit of starting system 8-2
2 1 1 Safety switch 8-3
2 1 2 Relays 8-5
3 Charging system 8-6
3 1 Electrical circuit of charging system 8-6
3 2 Electrical circuit of gauge system 8-7
3 2 1 Hour meter 8-8
3 2 2 PTO clutch 8-8
3 2 3 PTO switch 8-8
SERVICING ···· ··········· ··········· ········ ······•··· ····· ·········· ········ ····················· ··· ····· ······ ···· ··········· ······ 8-9
1 Troubleshooting for electrical system 8-9
2 Service specifications for electrical system 8-12
3 Checking and adjusting 8-13
3 1 Battery 8-13
3 1 1 Checking battery voltage 8-13
3 1 2 Checking battery terminal connection 8-13
3 1 3 Checking battery specific gravity 8-13
3 2 Main switch ····· ·· ··· ··· ··· ···· ······ ·· ··· ···· ··· ········ ··· ········ ···· ······· ··· ······· ··· ······ ··· ···· ····· ··· ····· ····· ···· ···· ······· ·· ···· 8-14
3 2 1 Checking connector voltage 8-14
3 2 2 Checking terminal continuity 8-14
3 3 Safety switches 8-15
3 3 1 Checking control of safety switches 8-15
3 3 2 Safety switch continuity test 8-18
3 3 3 Motion control lever switch 8-18
3 3 4 Parking brake switch 8-19
3 3 5 PTO switch 8-20
3 3 6 Seat switch 8-21
3 4 Electric PTO clutch 8-21
3 4 1 Checking electric PTO clutch (coil resistance) 8-21
3 4 2 Checking electric PTO clutch (Electromagnetic action) 8-21
3 4 3 Checking electric PTO clutch clearance 8-22
3 5 Relays 8-22
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3 5 1 Checking relay 8-22
3 6 Hour meter 8-23
3 6 1 Checking hour meter harness 8-23
3 6 2 Checking hour meter terminal continuity 8-23
9 MOWER
MECHANISM 9-1
1 Structure of mower 9-1
2 Power transmission flow for mower 9-3
SERVICING 9-5
1 Troubleshooting for mower 9-5
2 Service specifications for mower 9-7
3 Tightening torques for mower 9-8
4 Checking and adjusting 9-9
4 1 Leveling mower deck 9-9
4 1 1 Adjusting anti-scalp rollers 9-9
4 1 2 Checking mower deck level (side-to-side) 9-9
4 1 3 Adjusting mower deck level (side-to-side) 9-10
4 1 4 Checking mower deck level (front-to-rear) 9-10
4 1 5 Adjusting mower deck level (front-to-rear) 9-11
5 Disassembling and assembling 9-12
5 1 Dismounting mower deck 9-12
5 1 1 Disconnecting mower belt 9-12
5 1 2 Disconnecting lift links 9-12
5 2 Mounting mower deck 9-12
5 2 1 Connecting lift link 9-12
5 2 2 Connecting mower belt 9-13
5 3 Disassembling mower deck 9-13
5 3 1 Removing mower belt cover 9-13
5 3 2 Removing tension pulley and mower belt 9-14
5 3 3 Removing tension arm and idler pulleys 9-14
5 3 4 Removing blade 9-15
5 3 5 Removing blade shaft and pulley holder 9-15
5 3 6 Removing front plates 9-16