JINMA YL254Y HST User manual

Operation
Manual
Jinma USA LLC

2
Preface
Welcome to be a user of Huanghai Jinma YL254Y gardening wheel tractor. This model has
reasonable structure, high-quality materials and perfect performance. It has characteristics of
stong horsepower, low fuel consumption, light and flexible, easy operation, simple maintenance
and is suitable for a variety of gardening or field operations. We have written this instruction
manual to help the user better master the use, adjustment, repair and maintenance of this series
of models and make full use of the effectiveness and superiority of this series of models. For
engine maintenance methods, please refer to the diesel engine manual.
Notes for Owners
General information
This manual will help you to trial drive, drive and operate your new tractor and perform
maintenance in the correct manner. Please read these instructions carefully. Your tractor is
designed for normal gardening work.
Please contact with your authorized distributors without hesitation at any time when you
need suggestions about tractors. They can satisfy all your demands of maintenance requirements
with professional trained personnel, original parts and necessary equipment.
Provided specifications for your reference and guidance . For more detailed information of
your tractors and supporting equipment, please consult your authorized dealer.
The data provided by this manual would be changed due to the production changes. The
numbers of dimension and weight are only approximate. The illustrations do not show
necessarily the standard state of the tractor, nor does it imply in what areas these functions are
available. For any specific and precise information, please consult your authorized dealer.
Your tractor is designed and constructed to suit a wide range of working conditions and to
provide maximum performance, best economy and ease of operation. The tractor has been
through carefully inspected before delivery by factory and dealer to ensure that it is in good
condition. It’s very important to be sure to perform routine maintenance at the recommended
intervals specified in "Maintenance" of this manual to keep the best operating performance and
ensure trouble-free operation.

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About this manual
This instruction manual provides information on the use of the tractors, such as the uses
specified by the manufacturer and the conditions predicted by the manufacturer during normal
operation and routine repairs and maintenance.
Please read and understand and keep this manual in good condition for future reference at
all times.
Normal operation
Normal operation means that operators who are familiar with the tractor and the
equipment to be suspended and towed use the tractor according to the manufacturer's intended
use, and follow the information on the operation and safety practices specified by the
manufacturer and the signs on the tractor and equipment in this instruction manual.
Normal operation includes preparing and storing the tractor, placing parts in the working
position or vice versa, adding or removing counterweights and picking up and starting
attachments.
Normal operation involves adjusting and setting up the tractor and equipment to suit the
specific conditions of the field and/or crop.
Routine Maintenance
Routine maintenance refers to the activities that must be performed daily by operators who
are familiar with the characteristics of the tractor and follow the information on routine
maintenance and safety practices specified by the manufacturer or the signs on the tractor in this
instruction manual. Routine maintenance includes oil filling, cleaning, washing, topping up fluid
levels, lubrication, replacing consumable parts (e.g. light bulbs) and so on.
Conversion, regular maintenance and repairing
Regular maintenance means that in order to maintain the expected service life of the tractor,
a person who has been trained and familiar with the characteristics of the tractor must follow the
periodical maintenance and safety practices information specified by the manufacturer in this
manual or other company documents to execute it at specified intervals.
Conversion means that in order to assemble the tractor into a specific configuration, must
be performed by professional service staff who are familiar with the characteristics of the tractor

4
and follow the information on this manual, assembly instructions or other conversion information
partly specified by the manufacturer to execute.
Repairing refers to the purpose of restoring the tractor to normal operation after a
malfunction or performance degradation, must be performed by professional service staff who
are familiar with the characteristics of the tractor to perform in compliance with the repair
information in the dealer's factory operating instructions specified by the manufacturer.
Cleaning of tractors
This machine is the latest high-tech machine with electronic control. Cares should be taken
when cleaning tractors, especially when using high-pressure water guns. Even if all precautions
are taken to protect the electronic components and connectors, the pressure generated by some
cleaning machines may still be too high to ensure complete protection against water ingress.
When using a high-pressure water gun, do not get too close to the tractor and avoid direct
water spraying of electronic components, electronic connectors, vents, seals and fuel caps, etc.
Do not spray a hot engine or exhaust pipe directly with cool water.
Failure to comply with these rules will invalidate the warranty or guarantee.
Safety
The precautions introduced in the first section must be taken to ensure your safety and the
safety of others. Before operating the tractor, read the safety precautions and follow the advice
provided.
First 50-hour maintenance
You will find the 50-hour maintenance report in the later part of this manual.
CAUTION: It is important to carry out the recommended 50 hour service to ensure that your
tractor provides optimum performance and efficiency.
Spare parts
It should be emphasized that the original parts have been inspected and approved by the
company. The installation and/or use of "non-original" products may have a negative impact on
the tractor's design characteristics, thereby affecting its safety. For any damage caused by the use
of non-genuine parts and accessories, the company will not be responsible. Only genuine
replacement parts can be used. The use of non-genuine parts may invalidate the legal approval

5
related to this product.
Any modification to the tractor is prohibited unless specifically authorized in writing by the
company's After Sales Department.
Warranty
Your tractor is warranted according to the contract agreement between the dealers in your
area. If the use, adjustment and maintenance of the tractor not according to the instructions
provided by the manual, the warranty will not apply.
Use of biodiesel fuel
CAUTION: Before using biodiesel in your tractor, please refer to the information on the
storage and use of biodiesel on this manual.
Emission control
CAUTION: The engine and fuel system on the machine are designed to comply with
government emission standards. Distributors, customers, operators and users are strictly
prohibited from tampering in accordance with the law. Failure to comply with the standards will
result in government fines, rework charges, warranty voids, litigation and possible confiscation of
the machine until it is reworked to its original condition. Engine maintenance and/or repairs can
only be carried out by certified mechanics!
Safety alert symbols
In this manual, the safety alert symbol prompts important safety information. When you see
this symbol, you should be alert for possible injuries, read the information below the symbol
carefully, and inform other operators.
"WARNING" and "CAUTION": emphasize the process or technique of correct operation
which if ignored, can cause injury or death to the driver or bystanders.
"IMPORTANT": emphasize the process or technique of correct operation, which if ignored
can cause damage to the tractor or equipment.
Jiangsu Yueda Intelligent Agricultural Equipment Company
June, 2021

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Product Identification Mark Record Form
Please fill in the table below carefully when purchasing the machine. The number and
other information (including letters) in the table should be recorded completely and clearly
written. The content of the information refer to the tractor product label and the rear end
number of the rear axle housing. Complete and correct information is convenient for users to
quickly report for repairs when the tractor fails or as a basis when the tractor is lost. This
manual is an integral part of the machine. It is recommended that the supplier of the new
tractor or the second-hand tractor should keep relevant documents to prove that this manual
and the tractor are provided to the user at the same time. The user should keep this
instruction manual intact for a long time and store it separately from the tractor.
Huanghai Jinma YL254Y Gardening Wheeled TractorManual
Jiangsu Yueda Intelligent Agricultural Equipment Company Edited
Format󰵼787×1092 1/16 Number󰵼Z01-10-001
First Version on June,2021 First Printing on June,2021
Brand name
Huanghai Jinma
Model
YL254Y HST
Machine number
Chassis number
Engine model
Engine number
Username
Purchase time
Purchase location
Dealer
Dealer contact number
Company name
Jiangsu Yueda Intelligent Agricultural Equipment
Company
Company address
9# NenJiang Road, Yancheng Economic and
Technological Development Zone, Jiangsu,China
Company contact number
0086-515-68823978/68829666

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Common measurement units, symbols and names
Number
Type
International unit
1
Time
Second -s
2
Minute -min
3
Hour -h
4
Distance
Millimeter -mm
5
Centimeter -cm
6
Meter -m
7
Kilometer (km)-km
8
Power
New (ton)-N
9
Thousand Newtons (tons)-kN
10
Torque
Newton·meter -N.m
11
quality
Kilogram (kg)-kg
12
Pressure
Pa -Pa
13
KPa -kPa
14
MPa -Mpa
15
Temperature
Celsius -℃
16
Speed
Kilometer / Hour -km/h
17
Meter / Second -m/s
18
Rotating speed
Revolutions per minute -r/min
19
Power supply
kilowatt -kW
20
Watt -W
21
Current
Ampere -A
22
Voltage
Volt -V
23
Volume
Cubic meter -㎥
24
Liter - L
25
Milliliters -ml
26
Flow
Liters per minute -L/min
27
Displacement
Milliliters per revolution -ml/r
28
Area
Hectares -hm2 or󰵪ha󰵫
29
Are- dam2 or󰵪a󰵫

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Content
Preface
Notes for Owners
Product Identification Mark Record Form
Table of common units
Chapter 1 Precautions for safe operation ............................................................................................................ 1
Chapter 2 Overview ............................................................................................................................................... 8
Chapter 3 Main technical specifications of tractor ............................................................................................. 9
3.1 Complete machine parameters ............................................................................................................... 9
3.2 Transmission system .......................................................................................................................... 10
3.3 Travelling, steering, braking ................................................................................................................ 10
3.4 Working equipment ........................................................................................................................... 11
3.5 Perfusion capacity .............................................................................................................................. 11
3.6 Electrical components ........................................................................................................................ 12
Chapter 4 The use of tractor ........................................................................................................................... 13
4.1 Fuel and lubrication of tractor ......................................................................................................... 13
4.2 Coolant of tractor ............................................................................................................................. 14
4.3 Running-in of tractor .......................................................................................................................... 14
4.4 Instruments and controls ................................................................................................................... 15
4.5 Maneuvering and driving ................................................................................................................. 15
4.6 Operation and use of tractor working device ................................................................................... 18
4.7 Front traction mechanism ................................................................................................................ 20
4.8 Front counterweight ......................................................................................................................... 20
4.9 The location and use of the battery.................................................................................................... 20
4.10 Operation of electrical equipment .................................................................................................. 21
Chapter 5 Technical maintenance of tractors ........................................................................................... 26
5.1 Shift technical maintenance ............................................................................................................. 26
5.2 Level 1 technical maintenance ......................................................................................................... 26
5.3 Level 2technical maintenance .......................................................................................................... 27
5.4 Level 3technical maintenance .......................................................................................................... 27
5.5 Level 4technical maintenance .......................................................................................................... 27
5.6 Winter technical maintenance............................................................................................................ 27
5.7 Technical maintenance for long-term storage .................................................................................. 28
Chapter 6 Main adjustments of the tractor ............................................................................................... 29

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6.1 Clutch adjustment ............................................................................................................................ 29
6.2 Brake adjustment ............................................................................................................................. 30
6.3 Adjustment of central transmission and differential ........................................................................ 31
6.4 Wheel track adjustment ................................................................................................................... 34
6.5 Power output adjustment .................................................................................................................. 34
6.6 Adjustment of the auxiliary gear lever ............................................................................................ 35
6.7 Adjustment of the front drive joystick ............................................................................................. 35
6.8 Adjustment of hydraulic steering ................................................................................................... 36
6.9 Structure and adjustment of the lifter ............................................................................................... 37
6.10 Intake and exhaust system ............................................................................................................... 37
6.11 Anti-rolling protection structure .................................................................................................... 38
6.12 Traction device ................................................................................................................................. 38
Chapter 7 The main faults and troubleshooting methods of tractors ............................................................. 40
7.1 Diesel ............................................................................................................................................... 40
7.2 Transmission system ........................................................................................................................ 41
7.3 Brake ................................................................................................................................................ 42
7.4 Steering and walking system .................................................................................................. 42
7.5 Hydraulic suspension system ........................................................................................................... 43
7.6 Electrical system .............................................................................................................................. 44
Chapter 8 Delivery, acceptance and transportation ......................................................................................... 48
Chapter 9 Dismantling and disposal .................................................................................................................. 49
Chapter 10 Warranty matters ............................................................................................................................ 50
Chapter 11 Appendix .............................................................................................................................................. 52
11.1 Electrical system circuit diagram ................................................................................................... 52
11.2 Distribution map of tractor transmission system and rolling bearing .............................................. 53
11.3 Sketch of the movement of the tractor suspension system ............................................................ 53
11.4 On-board accessories ..................................................................................................................... 54
11.5 Consumable parts list ..................................................................................................................... 55
11.6 Implementation of standards, orders and laws ............................................................................... 55

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Chapter 1. Precautions for safe operation
1.1 The driver must be specially trained, get a driver’s license and be tested on time, and
then use the tractor after reading the instructions carefully.
1.2 It is strictly forbidden to drive the tractor without a license and to operate without a
license. When driving on highways, pay attention to traffic signs and obey local traffic rules.
1.3 This machine can only be operated, maintained and repaired by personnel who are
familiar with the characteristics of the machine and have relevant knowledge of safe operation.
The driver should wear compact and safe clothes when driving and using the tractor and bare
feet and slippers are strictly prohibited.
1.4 Keep children and non-tractor drivers away from the tractor under any circumstances
to prevent injury.
1.5 It is strictly forbidden to drive the tractor after drinking, fatigue or taking stabilized
drugs, and it is strictly prohibited to overload, over driving and using the tractor.
1.6 The driver should pay special attention to the safety warning signs on the
machine.
1.7 When using the tractor, the driver should strictly follow the safety warning signs to
avoid accidents. When the safety signs are lost, contaminated or worn, they should be replaced
in time.󰵪The safety sign is shown in the picture 1-1 to 1-29󰵫
Number
Meaning
Location
QTY
1-1
Warning: Engine fan
On both sides of
the radiator,
clearly visible
2

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1-2
Warning: Heat
source parts
Close to the
muffler
1
1-3
Warning: Engine
pulley
Close to the
pulley
1
1-4
Warning: Please
read the instruction
manual before
operating the
machine
On the right side
of the
dashboard
1
1-5
Warning: PTO shaft
Above the PTO
protective cover
1
1-6
Warning: When
operating the lifter,
do not stand
between the tractor
and the implement
At the center of
the end of the
machine
1

12
1-7
Warning: Be sure to
lock the safety
frame in an upright
position, unless it
must be allowed to
operate under trees
or bushes
On the left side
of the safety
frame
1
1-8
Warning: Heat
source parts
Both sides of the
radiator are
clearly visible.
2
1-9
Warning: Repair
On the right side
of the meter
1
1-10
Warning: It is
forbidden to sit in
the non-passenger
position
On two
mudguards
2
1-11
Warning: The use of
seat belts
On the right side
of the safety
frame
1

13
1-12
Diesel fuel
At the upper
end of the fuel
tank
1
1-13
Start control
Above the start
switch
1
1-14
Engine stop button
Above the key
1
1-15
Parking brake
control
Near the hand
brake assembly
1
1-16
Two-wheel drive &
four-wheel drive
Near the front
drive handle
1
1-17
Hydraulic output
Near the
multi-way valve
1
1-18
Differential lock
Close to the
differential lock
pedal
1
1-19
Oil filling
Engine oiling,
front drive axle
oiling
2

14
1-20
Lifter control
Near the lifter
handle
1
1-21
Gearbox refueling
Close to the
gearbox fuel
port
1
1-22
Hood lock switch
Near the hood
lock
2
1-23
(Near) Headlight
Control panel
1
1-24
(Far) Headlight
Control panel
1
1-25
Left and right turn
signals
Control panel
1
1-26
Emergency warning
sign
Control panel
1
1-27
Rear working light
Rear side of
right guard plate
1
1-28
Outline light
Control panel
1
1-29
Horn
Control panel
1
1.8 Before using a new tractor or an overhauled tractor, it must be run-in according to the
running-in specification before it can perform normal load work.
1.9 When the tractor starts, pay attention to the obstacles on the road; whether there are

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people between the tractor and the agricultural implement or trailer.
1.10 Do not start or manipulate the tractor off the position of the driver's seat. Before
starting the tractor, place the gear levers in the "neutral" position. Before leaving the driver's seat,
the gear levers must be placed in the "neutral" position.
1.11 When the tractor is walking, no one is allowed to get on and off the tractor. Before
inspecting, cleaning, adjusting, repairing and maintaining the tractor, the engine must be turned
off, the key must be removed, the shift lever and the power output shaft control lever must be
placed in the neutral position, and the parking brake must be locked so that all moving parts are
in the static position. Do not climb under the tractor for inspection and repair while the engine is
running.
1.12 Only after disconnecting the ground wire from the battery can electrical repairs be
carried out to avoid burning electrical parts.
1.13 When the driver leaves the tractor, he must lower his agricultural implements to the
ground, switch the gear levers to the "neutral" position, turn off the engine, and remove the key
to prevent others from starting the tractor.
1.14 It is only allowed to use low gears to avoid overturning especially when driving on
large slopes and muddy roads. It is strictly forbidden to press clutch pedal and coast in neutral
while going down the slopes. Tractors cannot be driven close to the ditches to avoid cracking
caused by self weight of tractors which will result in injuries and deaths accidents.
1.15 It is strictly forbidden to rest foot on the brake pedals and clutch pedals while driving.
1.16 It is strictly forbidden to use one-side braking for sharp turning when the tractor is
running at high speed in case overturning and damaging components.
1.17 The tractor must not be overloaded or used to avoid overloading the machinery and
damaging the machinery.
1.18 The oil circuit, electric circuit, and cooling water must be checked before the tractor
starts. Under no circumstances should the fuel tank be filled with fuel without precipitation and
filtering. After starting, you must pay attention to the readings of the meters.
1.19 Before refueling the fuel tank, turn off the engine; when refueling and overhauling the
fuel system, avoid flames and spark, and don’t smoke.

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1.20 The grass clippings, dust and other debris on the heat dissipation water tank should be
eliminated in time to ensure its heat dissipation effect. When the water tank is overheated, it is
forbidden to pour the engine and water tank with cold water to prevent the cylinder from
breaking. The load must be reduced. After the temperature of the coolant drops, add the coolant
while the engine is running. When the engine is hot, do not screw the water tank cap to prevent
scalding by the sprayed coolant.
1.21 Exhaust elbow and muffler are high temperature parts. Avoid getting close within half
an hour of starting and stopping the engine to avoid burns.
1.22 When changing shifts, the successor should be informed of the tractor's failure. When
working at night, there must be good lighting equipment.
1.23 After finishing work in areas where the temperature is lower than 0℃ in winter, the
water should be drained out when the tractor is idling, so as not to drain the water and damage
the parts (except for adding antifreeze).
1.24 When the tractor is driving or operating, if one of the drive wheels is found to be
seriously slipping, the differential lock can be used according to the method of using the
differential lock in the manual. In other situations, it is strictly forbidden to use the differential
lock to prevent damages to the machine or other accidents.
1.25 Before using the power output shaft, the power output protective cover must be
installed. When the tractor's power output shaft is working under load, the tractor should not
turn sharply to avoid damaging the universal joint.
1.26 It is strictly forbidden for the tractor to park on a slope with a relatively large slope.
When the tractor is parked on a slope, be sure to use the parking brake and block the rear wheel
with a wedge. When the driver needs to use the jack for maintenance, the jack can be placed in
the front drive shaft housing or the rear drive shaft housing. The parking brake must be used and
the rear wheel must be blocked with a triangular plug. (As shown below)

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Position of front lifting jack Position of rear lifting jack
1.27 When getting on or getting off the tractor, you need to
use the tractor's pedals (C) and hold the handrails (A) and (B) to
prevent falling (as shown in the right picture). When the tractor is
moving, never getting on or getting off the tractor; when working
in fields or muddy areas, remove the dirt on the soles of shoes
before starting the tractor, and keep the pedals clean to avoid
slipping and falling.
1.28 Tractors are not allowed to work "with failure", especially when there is no oil pressure,
low oil pressure, high water temperature, or abnormal noises and smells. If the above conditions
occur, stop and check in time and troubleshoot.
1.29 Frequently check and tighten the wheel spoke bolts, the bolts and nuts of other
important parts to avoid personal injury and excessive damage to the machine.
1.30 Unauthorized modification of the tractor which results in reducing the reliability of the
machine itself, damaging the machine or personal injury has nothing to do with the
manufacturer.
1.31 When the three-point suspension device is running, the driver should stay away from
the operating area to avoid bumps; when carrying a suspended agricultural implement for parcel
transfer or operation, it is not allowed to drive at high speed to avoid damaging the lifting system
and suspension system components.
1.32 The anti-overturning safety protection device in the driver’s driving area is optional, the
tractor must be equipped with a safety belt when the safety protection frame is installed. If the
safety protection frame is removed, the safety belt must also be removed to prevent the driver
from mistakenly use. It is forbidden to remove the anti-overturning safety frame when the tractor
is in normal use.
1.33 Involved in a rotating transmission mechanism may cause personal injury or death, and

18
the transmission mechanism protective cover must always be in position.
1.34 Check the hydraulic hoses for oil leakage, kinks, cuts, cracks, wear, corrosion, steel wire
leakage or any other damage at least once every six months.
1.35 Welding or heating near high-pressure liquid pipelines or other combustible materials is
prohibited. If the heat exceeds the heating zone, the high-pressure liquid pipeline may burst.
1.36 The gas overflowing from the battery has the risk of explosion, so the battery cannot be
close to open flames (matches, lighters or cigarette fires, etc.); do not short-circuit the wires to
generate sparks; contact with electrolyte is very dangerous. If eyes, skin, and clothes contact with
electrolyte, should be rinsed with clean water immediately, or ask a doctor for treatment.
1.37 When charging the battery, ensure that the vent of the filling plug is unblocked, away
from open flames, and cut off the power before charging to prevent explosion.
1.38 Slope is the main factor that causes loss of control and overturning accidents which can
cause serious injury or death, so you need to be extra careful on the slope. It is not possible to
enumerate every possibility that may cause the tractor to overturn, and attention must be paid
to every situation that may affect stability.
1.39 The engine, radiator, exhaust components, and hydraulic lines may become hot during
operation. Be careful when maintaining these components. Please process or disconnect the
high-temperature parts after they have cooled down. Wear protective equipment when
appropriate.
1.40 When working on the ground, please pay attention to buried cables or other service
facilities. Please contact the public utility to determine the location of the cable equipment; pay
attention to the wires and hanging obstacles above. For safety, keep a long distance from the
high-voltage line.
1.41 Do not operate the machine during thunder and lightning. If you are standing on the
ground at this time, stay away from the machine and hide in a permanently protected building.

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Chapter 2 Overview
Huanghai JInma YL254Y is a new type of gardening tractor which is mainly suitable for a
variety of home gardening operations developed according to the needs of a new generation
of small gardening tractors. The characteristics of this model are: light, flexible, versatile and
beautiful.
The tractor is powered by Perkins 403J-11 engine, single-stage clutch, static hydraulic
variable speed transmission, middle and rear power output, four-wheel drive type. It is equipped
with good adhesion, low-pressure and wide-width driving tires and with a relatively complete
hydraulic suspension system, which can meet the operation needs of mowing, rotary tillage,
spraying, etc. It has the advantages of appropriate power, large traction, compact structure, high
transmission efficiency, light operation, simple maintenance, convenient supporting implements,
economic use and good comprehensive utilization performance.
Warning󰵼
󰵪1󰵫Unauthorized modification of the tractor which results in reducing the reliability of the
machine itself, damaging the machine or personal injury has nothing to do with the
manufacturer.
󰵪2󰵫The user should pay attention to the potential damages caused by the failure to
configure the agricultural implements in accordance with the regulations which may cause
damage to the machine or personal injury and has nothing to do with the manufacturer. The user
should consult the manufacturer if he can't select and match agricultural implements correctly.
󰵪3󰵫This model will continue to improve certain structures in order to continuously meet
customer requirements. Please forgive if the manual is inconsistent with the actual product.
󰵪4󰵫Thank you for choosing our company's products and we sincerely hope that you can
put forward suggestions on our products as reference of improvements.

20
Chapter 3 Key technical specifications of tractor
3.1 Parameters of whole unit
Type
YL254Y
Engine model
403J-11
Type
4󰰃4󰵪four-wheel drive󰵫
Inlet type
Inhale naturally
Nu󰰃󰰃
mm
3×77×81
Displacement L
1.131
Rated power kW
18.4
Rated speed r/min
2800
Max torque/speed Nm/r/min
66.9/2100
Variable load average fuel
consumption rate g/Kwh
󰰞365
Max no-load speed
r/min
󰰞3000
Emission requirements
EPA/Europe V
Stable idling speed r/min
1000
Intake resistance
kPa
󰰞3.0
Exhaust back pressure
kPa
󰰞10.2
Traction power rate
kW
󰰟11.04
Largest traction kN
󰰟7.5
PTO shaft power factory specified value
kW
14.8
Max lifting force kN
󰰟3.4
Dimensions
mm
Length󰵪Without
three-point
suspension󰵫
3213(2885)
Width
1293
Height
2290
Wheelbase mm
1606
Wheeltrack mm
Front
1010
Rear
1000