Stiga PARK PRO 900 Instruction manual

PARK PRO 900
2022
WORKSHOP MANUAL

All brands, names, logos and trademarks mentioned belong to their respective owners.
© by STIGA - No use of the illustrations or duplication, reproduction or translation, even partial, of the texts in this
document may be made without explicit authorisation.
TABLE OF CONTENTS
1 - General instructions
2 - Chassis and body
3 - Steering
4 - Hydraulic system
5 - Belts
6 - Control Wires
7 - Electrical system

WORKSHOP MANUAL
PARK PRO 900
Chapter
1 - General instructions
EDITION
2022
Page
1
1 - General instructions
General
This Workshop Manual is intended for STIGA PARK PRO 900.
This Manual do not cover repair instructions for the engines. Regarding engines, contact the
respective representative in the actual country.
This Manual and its specifications are valid for machines in their original design. In case of
modified or changed machine, i.e. the engine is replaced, the manual accordance is limited.
The manual is divided in the following chapters:
Chapter 1 - is this chapter
Chapter 2 - Chassis
Chapter 3 - Steering
Chapter 4 - Hydraulic system
Chapter 5 - Belts
Chapter 6 - Control Wires
Chapter 7 - Electrical system
Contents in this chapter
1.1 Introduction ...................................... 2
1.1.1 Responsibility declaration ............ 2
1.1.2 How this manual is used .............. 2
1.1.3 Abbreviations ................................ 2
1.2 Safety Precautions .......................... 2
1.2.1 Symbols and general warnings ..... 3
1.2.2 Warm parts ................................... 3
1.2.3 Moving parts ................................. 3
1.2.4 Lifting and blocking up .................. 3
1.2.5 Cleanliness ................................... 3
1.2.6 Tightening torque .......................... 3
1.2.7 Sharp edges ................................. 3
1.2.8 Replacement parts ....................... 3
1.2.9 Inspection ..................................... 3
1.3 Unpacking and assembly ............... 4
1.3.1 General ......................................... 4
1.3.2 Tyres ............................................. 4
1.3.3 Battery .......................................... 5
1.3.4 Final checks.................................. 6
1.4 Service .............................................. 7
1.4.1 Service times ................................ 7
1.4.2 First Service ................................. 8
1.4.3 Intermediate Service..................... 8
1.4.4 Basic control ................................. 9
1.4.5 Description of service points ....... 10
1.5 Oil and filter .................................... 13
1.6 Technical specifications ............... 13
1.7 General tightening torque ............. 13

WORKSHOP MANUAL
PARK PRO 900
Chapter
1 - General instructions
EDITION
2022
Page
2
1.1 Introduction
1.1.1 Responsibility declaration
In spite of the great care we have taken there may be errors in this publication.
The author cannot be made liable for incorrect or missing information.
STIGA reserves the right to regularly change product specifications without prior notice. All
the information in this book isbased on the information available at the time of production.
Illustrations and photographs may be arranged schematically, which implies that one picture
may cover several models and therefore not correspond exactly with all models.
1.1.2 How this manual is used
To make this manual easy to understand we have divided the machine into its main systems
and components. These parts are now the different chapters in the book.
Each chapter is divided up into sections.
In each chapter there is a detailed table of contents so that you can easily and quickly find
what you are looking for.
Always check that you are reading the right chapter for your particular machine before start-
ing the repair work.
1.1.3 Abbreviations
The following abbreviations are used in this manual:
HST Hydrostatic Transmission PTO Power Take Off
1.2 Safety Precautions
This manual has been written primarily for trained mechanics working in a well-equipped
workshop.
A basic knowledge of repairs, tools and repair instructions is, however, always a prerequisite
for first-rate results.
A qualified mechanic should always be consulted if the owner does not have sufficient
knowledge to carry out repairs.
During the warranty period all service must be carried out by an Authorised Workshop for the
warranty to be valid.
The following basic points should be observed if the machine is to function perfectly:
• Follow the service schedule.
• Be on the alert for sudden vibrations or abnormal noise to avoid major breakdowns.
• Always use Genuine Spare Parts
• Follow the descriptions in this manual carefully. Do not take any short cuts.

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EDITION
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1.2.1 Symbols and general
warnings
Warning! This symbol indicates
a risk of personal injury or dam-
age if the instructions are not
followed.
Note! This text indicates a risk of
damage to the material or risk of un-
necessarily complicated work if the
instructions are not followed.
1.2.2 Warm parts
Please observe that engine and exhaust
system picks up a lot of heat during use.
To avoid injuries, allow the machine to cool
before any kind of repairs are made to or
near parts of the engine or exhaust sys-
tem.
1.2.3 Moving parts
The machines are all equipped with v-belt
transmissions. Always stop the engine and
remove the starter key before inspections
or repairs are carried out.
Always use extreme caution when testing
systems with moving parts to avoid inju-
ries.
Always use Genuine Spare Parts during
service work.
1.2.4 Lifting and blocking up
Before work under the machine, always
make sure that lifting devices and jack-
stands are approved for the weight.
Work safe!
1.2.5 Cleanliness
Clean the machine before starting repairs.
Dirt that penetrates into sensitive compo-
nents can seriously influence the service
life of the machine.
1.2.6 Tightening torque
Unless otherwise stated the tightening
torque in the tables in the section Technical
specifications must be used for the differ-
ent sizes of screws.
This does not refer to self-tapping screws,
which are mainly used for the assembly of
body parts.
1.2.7 Sharp edges
Watch out for sharp edges, especially
when working with the mower deck. The
blades can be very sharp. Always wear
gloves when working with the blades.
1.2.8 Replacement parts
Always use Genuine Spare Parts during
service work.
1.2.9 Inspection
Each part dismantled in conjunction with
service work must be inspected.
Examine for: wear, cracks, out of round-
ness, straightness, dents, discolouring,
abnormal noise and jamming.

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EDITION
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1.3 Unpacking and
assembly
1.3.1 General
Every machine has undergone an exten-
sive control programme before delivery.
The machines are delivered as completely
assembled as possible.
Thanks to this the assembly on delivery is
rapid and easy.
The correct and careful assembly of the
machine on delivery is asimple way of
ensuring satisfied customers!
A complete assembly instruction is given
in the owners manuat delivered with the
machine. This section will give comple-
ment information and explanations for the
assembly.
Note! The machine shall remain
placed on the pallet during the un-
packing and assembly.
1.3.2 Tyres
Check the air pressure in the tyres. The
pressure is designated on the floor mat.
The air pressure in the tyres is of critical
importance for the performance and han-
dling of the machine. The correct air pres-
sure for mowing is 0.6 bar (9 psi) in the
front tyres, and 0.4 bar (6 psi) in the rear
tyres.
When using heavy accessories, e.g. snow
thrower, it may be necessary to increase
the pressure somewhat. However, the
maximum permitted pressure is always 0.8
bar (12 psi).
Too high pressure in the tyres leads to that
the machine drives poor due to: i:
• A small surface in contact to the
ground.
• Hard tyre = less flexibility = self clean-
ing characteristic deteriorate.
Too high
pressure
Correct
pressure

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EDITION
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1.3.3 Battery
The battery is a valve regulated battery.
Load and assemble the battery, following
the instructions below.
The battery needs limited maintenance. Is
has no electrolyte levels or plugs.
Warning! Do not wear rings,
metallic bracelet, chain round
the neck or similar metal objects
when working with the battery.
It can cause short-circuit, burns
and fire.
Warning! The battery must be ful-
ly charged before being used for
the first time. The battery must
always be stored fully charged. If
the battery is stored while dis-
charged, serious damage will
occur.
Charging with the engine
The battery can be charged using the en-
gine’s generator as follows:
1. Install the battery in the machine as
shown below.
2. Place the machine outdoors or install
an extraction device for the exhaust
fumes.
3. Start the engine according to the in-
structions in the user guide.
4. Allow the engine to run continuously for
45 minutes.
5. Stop the engine. The battery will now
be fully charged.
Storage
The battery voltage is not allowed to drop
under 12,5 V during storage.
Make sure that the battery voltage always
is more than 12,5 during storage. If not, the
battery will be destroyed.
If the cables are disconnected/
connected in the wrong order,
there is a risk of a short-circuit
and damage to the battery.
If the cables are interchanged,
the generator and the battery will
be damaged.
The engine must never be driven
with the battery disconnected.
There is a risk of serious damage
to the generator and the electri-
cal system.
Charging using battery charger
To access the battery, see “Battery re-
placement” on page 15 in section "7 –
Electrical system".
When charging using a battery charger, a
battery charger with constant voltage must
be used.Ordering number: 1136-0602-01.
The battery can be damaged if a standard
type battery charger is used

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EDITION
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1.3.4 Final checks
Removing from pallet
All the above measures shall have been done with the machine standing on the pallet. Now,
loosen the remaining straps and roll off the machine from the pallet.
Fit and adjust accessories.
Test driving
Warning! Do not drive without a work equipment (mover deck) attached. Risk
for turning over.
Drive the machine for a few minutes. Test all the functions. Pay special attention to the safety
functions. If the machine is to be delivered with mower deck or other accessories, fit these
before test driving the machine.
HST oil
Check the oil level in the HST’s expansion tank after test driving, and top up if necessary.
Engine oil
Check the oil level in the engine and top up if necessary.
Miscellaneous
Give the machine a general inspection
• Is the machine clean?
• Is there any oil leakage?
• Abnormal noise or rattle?
Receipt
By filling in the guarantee certificate you guarantee that the delivery service has been cor-
rectly conducted.
Remember to make sure that the customer receives all the documentation when the ma-
chine is collected / delivered.

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EDITION
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1.4 Service
Every new machine is delivered with a service book. This service book is part of the active
post-market programme and shall be kept in a safe place during the entire lifetime of the
machine. Hand over the service book if the machine is sold in 2:nd hand.
Service should generally be carried out at least every 50 operating hours (exception of the
first service), although in accordance with the conditions below.
There are three different grades of service events. Every service event consists of a number
of service points as described in the following paragraphs. Every service point has a number
which refer to a describing text after the schedules.
The grades of service events are:
• First service
• Intermediate service
• Basic service
Some service points do not coincide with the scheduled service intervals, but shall be per-
formed in connection with a scheduled service when possible. E.g. some items shall be
performed at every second service and some also between two services.
These service points are described with procedure and interval in the respective “Instruction
for use”.
Typical service points wich not coincide with scheduled service intervals are:
• Cleaning/changing air filter in some engines.
• Change of oil in some engines.
• Valve adjustments for some engines.
• Change of transmission oil.
• Change of spark plug in some engines.
1.4.1 Service times
The electronic equipment of the machine monitors the count-down and displays motor main-
tenance deadlines. The digits on the display begin to flash when the machine reaches the
hourly threshold of intervention shown below:
Park PRO 900 AWX: 5 h 25 h (and all multiples of 25)
Park PRO 900 WX: 5 h 20 h 50 h (and all multiples of di 50)
This hour count is linked to the operating hours of the motor.
The flashing will continue for two minutes of motor operation and has priority over all other
display functions. The MODE button remains inhibited during this phase. Once 99999 hours
have been reached, the counter restarts from zero. Over 999 hours, minutes are not counted.

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EDITION
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Service Shall be performed
First service Within 5 hours of running
Intermediate service After the first 50 hours of running and then 50 hours after/before
every basic service.
Basic service Every 100 hours or every year, which first occur.
1.4.2 First Service
This service is very important to safeguard the continuing function of the machine. The first
service includes the service points as per the table below.
Number Service point
1 Safety check.
2 Tyres, air pressure.
3 Engine oil and filter, see “Oil and filter” at page 13.
4 Oil level in HST, see “Oil and filter” at page 13.
5 Belt transmissions, check.
6 Battery check.
19 Test driving.
1.4.3 Intermediate Service
The intermediate service is not as extensive as the Basic Service and can therefore be con-
ducted by the customer, or by an authorised Service Workshop. Regardless of who conducts
the service, it must be documented in the service book.
Number Service point
1 Safety check.
2 Tyres, air pressure.
3 Engine oil and filter, see “Oil and filter” at page 13.
4 Oil level in HST, see “Oil and filter” at page 13.
7 Air filter, cleaning.
8 Cooling fins, clean.
9 Lubrication.

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1.4.4 Basic control
This control must always be conducted by an authorized Service Workshop, and document-
ed with a stamp in the service book.
Number Service point
1 Safety check
2 Tyres, air pressure
3 Engine oil and filter, see “Oil and filter” at page 13.
4 Oil level in HST, see “Oil and filter” at page 13.
5 Belt transmissions, check
6 Battery check
7 Air filter for engine, see “Oil and filter” at page 13.
8 Cooling fins, clean
10 Transmission, check
11 Bearing boxes, check**
12 Exhaust system, check*
13 Electrical system, check*
14 Mower deck, check**
15 Blades, check**
16 Power take-off, check
17 Control check18Valve play***
18 Test driving
19 Guida di prova.
*) See also “Safety check”.
**) See also the mover deck manual.
***) See the engine manual.

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1.4.5 Description of service points
1. Safety check.
The machine is provided with safety devices/functions, related to the mechanical system and
to the electrical system.
Test of the electrical system.
Test Status Action Result
1 Operator not sitting in
seat.
Brake pedal pressed.
Turn the key and make a
start attempt.
Engine shall not start and
“SIT DOWN” shall be
displayed.
2 Operator sitting in seat.
Brake pedal not pressed.
Turn the key and make a
start attempt.
Engine shall not start and
“PRESS BRAKE” shall
be displayed.
3 Engine running.
PTO magnetic clutch
activated.
Operator rises from the
seat.
The engine shall stop.
Prova dei componenti meccanici
Test Status Action Result
4 Fuel system and connec-
tions
Visual check No leacage shall be ob-
served.
5 Electrical cables Visual check All insulation OK and no
mechanical damage.
6 Hydraulic system Visual check No leacage in hoses,
connections or devices.
7 Drive the machine for-
wards and backwards.
Release the drive pedal. The machine shall brake
and stop
8 Driving test Listen for abnormal nois
and vibrations.
No abnormal nois or
vibrations shall be ob-
served.

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2 Tyres, air pressure
Check the air pressure.
Adjust if necessary. The recommended air
presure is designated at the floor mat.
3 Engine oil and oil filter
See the “Instructions for use”, delivered
with the machine or “Instructions for use”
at page 13. See also the engine manufac-
turer manual.
4 Oil, HST
See the owners manual, delivered with the
machine.
5 Belt transmissions, check
Check the condition of all the belts and
belt tensioners.
6 Battery check
Check the battery. Charge if necessary.
See “Battery” at page 5.
7 Engine air filter
See the owners manual, delivered with the
machine. See also the engine manufac-
turer manual.
8 Cooling fins
Remove protective covers from the engine
and cleans between cooling fins. Use a
brush and compressed air. See also the
engine manufacturer manual.
9 Lubrication
Lubricate the articulation point (4 nipples)
and all moving parts such as wires and
levers. See also the instruction manual, de-
livered with the machine.
10 Transmission
Listen for abnormal noise. Chech that
there is no oil leakage.
11 Bearing boxes
Listen for abnormal noise from the bear-
ings. Check that there are no wear, play or
seizure.
• Lubricate the axle shafts every 25 hours
of operation.
• Emphasise to the user the importance of
keeping the wheel hubs controlled and
well lubricated, to avoid premature wear
of the axle shafts and hubs.
12 Exhaust system
Check that there are nocracks, leakage
or other damages. Check the attachment
devices. See also the engine manufacturer
manual.
13 Electrical system
Check that there are no damaged cables,
contacts or other devices. Check that all
cables are properly secured to the chassis
and with cable holders. Check that there
is no friction between cables and chas-
sis, which can result in cable damage and
short circuit.

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14 Mower deck
Warning! The blades are sharp.
Always wear gloves when work-
ing with the blades to avoid
injury.
Check if there are collision damages or
wear at the deck body and painting. Align,
repair and touch up the painting as re-
quired.
Check the tightening of the bearing boxes
screws and tighten.
Rotate the blades and check the the shafts
are correct, not bent, no abnormal bearing
noise and no plays.
Check the belts and their tensions, see
section 4.
Check that the lifting mechanism moves
evenly, not jammed and no play and that it
locks in desired position.
15 Blades
Warning! The blades are sharp.
Always wear gloves when work-
ing with the blades to avoid
injury.
Check that the blades are sharp. Sharpen
as reqiured.
16 Power take-off (PTO)
Check that the magnetic clutch engage
the work equipment rotation in the desired
time and that it not slips during normal
load. Replace the clutch if necessary.
Check that the power take-off brake (if ap-
plicable) brakes the rotation movement in
the desired time. Adjust if necessary.
17 Control check
Check that all controls function properly,
that there are no jammings or excessive
plays.
18 Valve play
See the engine manual regarding proce-
dure and interval.
19 Test driving
Drive the machine during a few minutes
and make the following attentions in differ-
ent speeds and turnings in right and left.
Check that all functions work evenly and
proper and without any abnormal noise.
• Brake function
• Clutch function
• Power take-off
• Steering
Check that there are no abnormal vibra-
tions.

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1.5 Oil and filter
For information about oil- and filterdata for the engine and for the transmission, see the own-
ers manual delivered with the machine. See also section 4 in this manual.
1.6 Technical specifications
For information about the technical specifications, see the owners manual delivered with the
machine.
1.7 General tightening torque
Unless otherwise stated, the following tightening torque are applicable for screws and nuts
on the machine:
Tightening torques :
Thread Torque
M5 5,7 Nm
M6 9,8 Nm
M8 24 Nm
M10 47 Nm

WORKSHOP MANUAL
PARK PRO 900
Chapter
2 - Chassis and body
EDITION
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2 - Chassis and body
General
To facilitate the driving, handling of work equipment and to make it comfortable for the driver,
the machines are equipped with a various number of aid equipments. These equipments are
mainly the same for all the machines covered by this manual, but in some cases configu-
rated in different ways. Where divergences occour between the machines, particular instruc-
tions are given for each particular equipment.
This chapter gives a brief description of the equipments and describes their repair and re-
placements.
Contents in this chapter
2.1 Rear wheel ........................................ 2
2.1.1 Assembly ...................................... 2
2.2 Lubrication ....................................... 3
2.3 Covers ............................................... 5
2.3.1 Front engine covers ...................... 5
2.3.2 Covers around the articulating
point ..................................................... 6
2.3.3 Instrument covers ....................... 10
2.4 Hydraulic pump .............................. 11
2.4.1 Dismantling ................................. 11
2.4.2 Assembly .................................... 13
2.5 Steering cylinder ........................... 14
2.5.1 Dismantling ................................. 14
2.5.2 Assembly .................................... 14
2.6 Articulating point ........................... 15
2.6.1 Dismantling ................................. 15
2.6.2 Assembly .................................... 16
2.6.3 Replacing the yoke shaft ............. 16

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2.1 Rear wheel
2.1.1 Assembly
1. Push the hub on the shaft until it rests
against the transmission body.
2. Assemble the washer and the circlip onto
the shaft. The washer shall rest against the
circlip.
3. Check the key and assemble it in the groove,
against the washer.
4. Assemble the rear wheel without tightening
the nuts.
5. Measure the distance (X) between the front
wheels and adjust the rear hubs until the dis-
tance between the rear wheels is the same
(X).
Pull out the hubs until the measure (Y) is the
same at the both sides.
Note! If the measures between the
wheels front and rear not is the same,
the machine will be hard to steer.
6. Tighten the two allen screws, using a 8 mm
allen key.
The tightening shall be performed in two
steps. Tighten first to 18 Nm and then, finally
to a torque of 24 Nm.
7. Assemble the rear wheel and the protecting
cover.
Asembly when tyre chains are used.
To give place for the tyre chains, the distance
X can be increased. If necessary until the hub
rests against the washer.
15/17 mm box
spanner

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2.2 Lubrication
The lubrication must be performed in accord-
ance with the service schedule. See the main-
tenance manual delivered with the machine.
Note! Lubrication is equally important
for a machine that is only used for a few
hours per year.
Note! The lubricant provides not only
protection from wear but also from rust.
Note! The machine should always be
lubricated before prolonged storage.
The lubrication is described in the table below
and in the figure at the next page.
Object Action Pos.
Centre point
3 grease nipples located on the central articulation on
the left-hand side of the machine.
Use a grease gun filled with universal grease.
Pump until the grease seeps out.
A
Steering wheel
(740 IOX, 540 IX)
2 grease nipples located on the central articulation on
the left-hand side of the machine.
Use a grease gun filled with universal grease.
Pump until the grease seeps out.
B
Tensioning arms Lubricate the support points of the tensioning arms
with oil. C
Wheel bearings
2 grease nipples.
Use a grease gun filled with universal grease.
Pump until the grease seeps out.
D
Quick-release sup-
ports
1 grease nipple for each front wheel.
Use a grease gun filled with universal grease.
Pump until the grease seeps out.
E
Control cabìes Lubricate the control cable ends with oil. F

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EDITION
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2.3 Covers
2.3.1 Front engine covers
Upper front cover
The upper front engine cover has to be re-
moved in the following cases:
• Access to the battery.
• Access to the fuses.
• Removing of the lower case.
Dismantle the front upper cover as follows:
1. Loosen the two bayonet sockets, release the
handle and fold back the upper cover. See
the owners manual.
2. Unscrew 4 screws at each side. See the fig.
Use a 4 mm allen key.
Warning! Petrol is highly inflam-
mable. Never smoke when han-
dling petrol. Never remove the filler
cap while the engine is running or
still warm or when hot objects are
present.
3. Remove the fuel cap.
4. Lift up and remove the cover.
5. Assemble the fuel cap.
6. Assemble the cover in the reverse order.
Lower front cover
The lower front engine cover has to be removed
among others in the following cases:
• Access to the steering cylinder.
• Access to wires and hoses.
• Access to the tank attachments.
Dismantle the front lower cover as follows:
1. Remove the upper front cover. See above.
2. Unscrew 1 screw at each side. Use a 4 mm allen key and preferably a mirror to locate the
screws. See the fig.