Stiga Primo 2008 Instruction manual

Edition Manual Chapter Page
2005-05-04 Workshop Manual, Stiga Park 1 General instructions 1
Workshop
manual
Primo
2008

Edition Manual Chapter Page
2008-03-18 Workshop Manual, Stiga Primo 1 General 1
1 General instructions
Contents in this chapter
General
This Workshop Manual is intended for Stiga Primo model 2008.
This Manual do not cover repair instructions for the motor. Regarding the motor, see the
motor manual.
This Manual and its specifications are valid for machines in their original design. In case of
modified or changed machine, i.e. the motor 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 Belts
Chapter 5 Electrical system
Chapter 5 Cutting deck
1.4 Unpacking and assembly......... 5
1.4.1 Unpacking.............................. 5
1.4.2 Battery ................................... 6
1.4.3 Assembly............................... 7
1.4.4 Final checks........................... 9
1.4.5 General tightening torque...... 10
1.5 Instructions for use .................. 10
1.6 Raising....................................... 11
1.6.1 Raising back.......................... 11
1.6.2 Raising front........................... 11
1.7 Turning upsidedown................. 12
1.7.1 Preparing............................... 12
1.7.2 Draining the petrol ................. 12
1.7.3 Seat with its plate................... 12
1.7.4 Motor hood............................. 13
1.7.5 Motor oil................................. 13
1.7.6 Petrol tank.............................. 13
1.7.7 Turning................................... 13
1.7.8 Restoring the machine on its
wheels.................................... 13
1.1 Introduction................................2
1.1.1 Responsibility declaration.......2
1.1.2 How this manual is used ........2
1.2 Safety Precautions ....................2
1.2.1 Before service or maintenance2
1.2.2 Symbols and general
warnings.................................3
1.2.3 Warm parts.............................3
1.2.4 Moving parts...........................3
1.2.5 Lifting and blocking up............3
1.2.6 Cleanliness.............................3
1.2.7 Tightening torque ...................3
1.2.8 Sharp edges...........................3
1.2.9 Replacement parts.................3
1.2.10 Inspection.............................3
1.3 Guarantee...................................4
1.3.1 Guarantee period ...................4
1.3.2 Exeptions................................4
1.3.3 Conditions for validity of the
warranties...............................4

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2008-03-18 Workshop Manual, Stiga Primo 1 General 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.
GGP SE reserves the right to regularly change product specifications without prior notice.
All the information in this book is based 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.
There is a quick-guide on the cover of this book, which refers to the different chapters. In
each chapter there is a detailed table of contents so that you can easily and quickly find
what you are looking for.
1.2 Safety Precautions
This manual has been written primarily for trained mechanics working in a well-equipped
workshop. Nevertheless, the manual contains such detailed information that it can also be
of use to owners who wish to carry out simple service and repairs on their machine.
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.
1.2.1 Before service or maintenance
Before service or maintenance is carried out, the mesures below shall be performed:
• Prevent the machine from rolling by always applying the parking brake.
• Prevent unintentional starting of the engine by removing the ignition key.
• All service and all maintenance must be carried out on a stationary machine with the
engine switched off.

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1.2.2 Symbols and general
warnings
Warning!
This symbol indicates a risk of
personal injury or damage if the
instructions are not followed.
Note!
Thistextindicates ariskofdamage to
the material or risk of unnecessarily
complicated work if the instructions
are not followed.
1.2.3 Warm parts
Please observe that engine and exhaust
system picks up a lot of heat during use.
Toavoidinjuries,allowthemachineto cool
before any kind of repairs are made to or
near parts of the engine or exhaust
system.
1.2.4 Moving parts
The machines are all equipped with v-belt
transmissions.Alwaysstoptheengineand
remove the starter key before inspections
or repairs are carried out.
Always use extreme caution when testing
systems with moving parts to avoid
injuries.
Always use Genuine Spare Parts during
service work.
1.2.5 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!
1.2.6 Cleanliness
Clean the machine before starting repairs.
Dirt that penetrates into sensitive
components can seriously influence the
service life of the machine.
1.2.7 Tightening torque
Unless otherwise stated the tightening
torque in the tables in the section
Technical specifications must be used for
thedifferentsizes of screws.This does not
refer to self-tapping screws, which are
mainly used for the assembly of body
parts.
1.2.8 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.
1.2.9 Replacement parts
Always use Genuine Spare Parts during
service work.
1.2.10 Inspection
Each part dismantled in conjunction with
service work must be inspected.
Examine for: wear, cracks, out of
roundness, straightness, dents,
discolouring, abnormal noise and
jamming.

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1.3 Guarantee
1.3.1 Guarantee period
For consumer use: two years from date of
purchase.
1.3.2 Exeptions
The extended warranty does not cover
damage due to the following:
• Neglect by users to acquaint themselves
with accompanying documentation.
• Carelessness.
• Incorrect and non-permitted use or
assembly.
• The use of non-genuine spare parts.
• The use of accessories not supplied or
approved by the manufacturer.
Neither does the warranty cover:
• Wearing components such as blades,
belts, wheels,battery and cables.
• Normal wear.
• Engine and transmission. These are cov-
ered by the respective manufacturer’s
warranties, with separate terms and con-
ditions.
The purchaser is covered by the national
laws of each country. The rights to which
thepurchaserisentitledwiththesupport of
these laws are not restricted by this
warranty.
1.3.3 Conditions for validity of the
warranties
The fully completed warranty card must be
sent to Stiga´s subsidiary or distributor.

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1.4 Unpacking and assembly
Every Stiga machine has undergone an
extensive control programme before delivery.
The machines are delivered as completely
assembled as possible.
Thankstothistheassemblyondeliveryisrapid
and easy.
The correct and careful assembly of the
machineondeliveryisasimplewayofensuring
satisfied customers!
Note!
The machine shall remain placed on the
pallet during the unpacking and
assembly.
1.4.1 Unpacking
Open up the crate and release the part as
follows:
1. 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
handling of the machine. The correct air
pressure for mowing is:
Front: 1,2 bar (17 psi)
Rear: 1,2 bar (17 psi)
Too high pressure in the tyres leads to that
the machine drives poor due to:
• A small surface in contact to the ground.
• Hard tyre = less flexibility = self cleaning char-
acteristic deteriorate.
2. Remove the following parts from the
package and put them on the floor.
• The steering wheel.
• The backrest.
• The plastic bag, containing owners manuals,
and assembly screws.
Too high pressure Correct pressure

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1.4.2 Battery
The battery is a valve regulated type.
Valve regulated battery
This battery needs limited maintenance. It has
no electrolyte levels or plugs.
Warning!
Do not wear rings, metallic bracelet,
chainroundtheneck or similar metal
objects when working with the
battery. It can cause short-circuit,
burns and fire.
Warning!
The battery must be fully charged
before being used for the first time.
The battery must always be stored
fully charged. If the battery is stored
while discharged, serious damage will
occur.
Charging with the engine
The battery can be charged using the engine’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
instructions in the user guide.
4. Allow the engine to run continuously for 45
minutes.
5. Stop the engine. The battery is now fully
charged.
Charging using battery charger
When charging using a battery charger, a
batterycharger with constant voltagemust
be used.
The battery can be damaged if a standard
type battery charger is used.
Installation of battery
Connect first the red cable to plus (+) and
then the black cable to minus (-).
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.
Theenginemustneverbedriven
with the battery disconnected.
There is a risk of serious
damagetothegenerator and the
electrical system.

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1.4.3 Assembly
The assembly procedure shall take place in a
clean, well illuminated and dry place.
Assemble the machine as follows:
Steering wheel
Install the steering wheel as follows:
1. Install the steering column jacket on the
steering column using a drift or similar so
that the holes in the steering column jacket
and steering column align with each other.
2. Tap in the supplied tension pin from the
other side using a hammer.
Backrest
Install the backrest as follows:
1. Fold the seat up towards the steering wheel.
2. Install the backrest with the screws (O)
without tightening.
3. Set the backrest to the desired position.
4. Tighten the screws. Tightening torque: 20-
24 Nm.
If the screws are tightened more than
24 Nm, the seat will be damaged.
N O

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Seat
Adjust the seat backwards/forwards to a
comfortable driving position.
The seat can be folded and adjusted front-rear.
To adjust the seat, slacken off the three screws
(P), set the seat to the desired position and
tighten the screws.
Tightening torque: 20-24 Nm.
If the screws are tightened more than
24 Nm, the seat will be damaged.
Theseatisequippedwith a safety switchthatis
connectedtothemachine’ssafetysystem.This
means that certain dangerous activities are not
possible when there is nobody sitting on the
seat.
Backrest
The backrest can be adjusted laterally and
vertically.Toadjustthebackrest,slackenoffthe
screws (O), set the backrest to the desired
position and tighten the screws. Tightening
torque: 20-24 Nm.
If the screws are tightened more than
24 Nm, the seat will be damaged.
Battery
Fold the seat up and install the battery leads.
See also“1.4.2”.
Engine oil
Check the oil level in the engine and top up if
necessary.
A
P
ON

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1.4.4 Final checks
The final check consists of test driving and
safety check as described below.
Test driving
Warning!
Do not drive without the 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. The mower deck must be
fitted before test driving the machine.
Listentoabnormalnoiseorrattleduringthetest
driving.
Safety check
Check the safety functions. It is often
appropriate to do this check in conjunction with
test driving. The following items shall be
checked at all machines:
• No leakage on fuel lines and connections.
• No mechanical damages to the electrical
cables. All insulation intact.
• The muffler shall be undamaged and its
screws tightened. No exhaust leakage in con-
nections.
The electrical check items are listed in the
tables below.
Test Status Action Result
1 PTO activated.
No gear activated. Turn the key and make a start attempt. Motor shall not start.
2 PTO not activated.
A gear is activated. Turn the key and make a start attempt. Motor shall not start.
3 Motor running.
PTO activated. Operator rises from the seat. Motor shall stop.
4 Motor running.
A gear activated. Operator rises from the seat. Motor shall stop.

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1.4.5 General tightening torque
Unless otherwise stated, the following
tightening torque are applicable for screws and
nuts on the machine:
1.5 Instructions for use
Some procedures, e.g. changing motor oil,
motorfilter etc.,arereferedtotheinstructionfor
use, delivered with the machine.
Theinstructionofuseiswrittenin16languages
and divided in two parts. The first part always
contains the languages SV, FI, DA, NO, DE,
EN, FR and N.
Tightening torques
Thread Torque
M5 5 Nm
M6 9 Nm
M8 22 Nm
M10 45 Nm

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1.6 Raising
Jacks must only be placed in the
designated area. Placing the jack in
other locations will damage the
machine.
The machine must only be raised on
hard, stable and horizontal surfaces.
Otherwise there is a risk of the
machine dropping.
The machine must never be loaded
with further weight when it is raised.
Nobodymust siton themachinewhen
it is raised.
1.6.1 Raising back
For certain maintenance work, the rear part of
the machine must be raised slightly so that the
required rear wheel can be removed. Raise the
machine as follows:
1. Position the machine on a hard, stable and
horizontal surface.
2. Raise the machine using a jack, see the fig.
1.6.2 Raising front
Note!
To raise the machine at the front, the
cutting deck must be removed.
Raise the machine at the front as follows:
1. Place the machine on a flat, solid and
horisontal ground.
2. Disassemble the cutting deck. See chapter 6.
3. Raise the machine with help of a jack and
apply the yokes according to the figure.
For location of jack and yokes, see the figure.
1
12
2

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1.7 Turning upsidedown
Some service measures are facilitated by
turning the machine upsidedown on a work
bench.
1.7.1 Preparing
Before the machine is turned, the following
items must be disassembled:
• Cutting deck, see chapter 6
• Draining the petrol
• Seat with its plate
• Motor hood
• Motor oil
• Petrol tank
1.7.2 Draining the petrol
Petrol is highly inflammable. Always
store fuel in containers that are made
especially for this purpose.
Only handle petrol outdoors, and
never smoke during petrol handling.
Never handle petrol together with a
warm or running engine.
1. Place the machine outdoors.
2. Drain the petrol tank by loosening the hose
at the fuel cock. Close the hose and insert it
in a suitable container until the tank is
empty.
3. Start the engine and let it run until it the
carburettor is empty and the engine stops.
1.7.3 Seat with its plate
1. Fold up the seat and remove the screws
(A).
2. Lift up and remove the seat with the seat
plate.
AA

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1.7.4 Motor hood
1. Open the motor hood.
2. Person 1 holds the hood on one side and
person 2 holds the other side and removes
the screws (B).
3. Lift carefully up the hood and place it on a
soft surface.
1.7.5 Motor oil
Drain the motor oil. See the owners manual.
1.7.6 Petrol tank
Loosen the screws holding the crossbar (C)
and remove the crossbar.
Loosen the screw (D) holding the tank and
battery cage and remove the tank and battery
cage with battery.
1.7.7 Turning
Prepare a work bench to place the machine on.
Two persons liftthe machine, one person at the
rear and one at the front.
Liftandturnthemachine180°.Placeitcarefully
on the work bench.
1.7.8 Restoring the machine on its
wheels
To restore the machine on its wheels, perform
the instructions above in the opposite order.
BB
CD

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2008-03-18 Workshop Manual, Stiga Primo 2 Chassis and Body 1
2 Chassis and body
Contents in this chapter
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.
This chapter gives a brief description of the equipments and describes their repair and
replacements.
This chapter also contains information about how to repair the plastic chassis including
material and threads.
2.3 Lubrication chassis .................... 4
2.3.1 Drive chain............................... 4
2.3.2 Steering cable.......................... 4
2.3.3 Tensioning arms, movable joints5
2.3.4 Throttle cable........................... 5
2.3.5 Bearings................................... 5
2.1 Repair of the chassis...................2
2.1.1 Repair of cracks........................2
2.1.2 Repair of threads......................2
2.2 Wheel............................................3
2.2.1 Adjusting the drive chain (U) ....3

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2.1 Repair of the chassis
There are two types of chassis repair:
• Repair of cracks i.e. after interferences etc.
• Repair of threads.
2.1.1 Repair of cracks
Consult the dealer for detailed information.
2.1.2 Repair of threads
Anumberofscrewsare threadeddirectintothe
chassis. The screws used are shown in the
figure to the right.
Threads for those screws can be repaired as
follows:
1. Order a repair kit for threads. See the spare
parts list.
2. Drill out the defect thread in the chassis with
a 7 mm drill.
3. Screw the thread adapter (A) from the repair
kit into the hole with the recess first. The
recess is intendet to cut the thread in the
plastic material.
The thread adapter is screwed in with a
screw in its internal thread.
4. Use a csrew M5x25 (B) from the repair kit
and fit the actual item.
A
B

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2.2 Wheel
For certain maintenance work, it is necessary
to remove a rear wheel.
Dismantling:
1. Raise the machine according to chapter 1.
2. Remove the cover disc (A).
3. Use a 17 mm wrench and remove the screw
(B) with disc.
4. Pull the wheel from the axle.
Assembly:
1. Slide the wheel onto the axle.
2. Install the screw (B) with disc.
3. Tighten the screw to 40-45 Nm.
2.2.1 Adjusting the drive chain (U)
Check/adjust the belt tension each season as
follows:
Check:
1. Raise the machine and remove the right-
hand rear wheel. See 6.4.
2. The chain (15:U) must have 5-10 mm of
play.
Any required adjustment, see blow.
Adjustment:
Adjust the play by moving the tensioner wheel
as follows:
1. Slacken off the nut (15:T) and set the
tensioner wheel to the desired position.
2. Tighten the nut and check the play. Adjust
again if required.
3. Tighten the nut to 40-45 Nm when
adjustment has been completed.
AB
5-10 mm
T
U

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2.3 Adjustments
2.4 Brake - Clutch
General
Pedal has the following functions:
•Clutch
• Service brake
• Parking brake
The pedal has three positions:
1. Pedal released – forward drive engaged.
The machine will move if a gear is engaged.
Service brake not activated.
2. Pedal depressed halfway – forward drive
disengaged, gear shifting can be performed.
Service brake not activated.
3. Pedal fully depressed – forward drive
disengaged. Service brake fully activated.
Also see “Parking brake” below.
4. Pedal fully depressed and locked – Parking
brake.
Adjustment
The adjustment is performed in 2 steps:
Step 1
The pedal shall have a play of 10-20 mm at the
top.
Adjust this play by inserting the cotter pin in a
suitable hole in the brake rod.
Note!
Check that the pedal return spring (A) is
in place. If not, the play cannot be felt.
10-20 mm
A

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Step 2
Adjust the brake to act according to the
description under “General” at the previous
page.
The adjustment is performed at the center nut
at the gearbox brake lever.
• Turn the nut CW to increase the braking
effect.
• Turn CCW to decrease the braking effect

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2.5 Lubrication chassis
All lubrication points according to the table
below must be lubricated after every 25
operating hours as well as after each clean.
2.5.1 Drive chain
Lubricate the drive chain (U) using chain spray
as follows. Use universal type chain spray.
1. Trestle up the machine’s right-hand rear
wheel so that it can rotate freely.
2. Brush the chain clean using a wire brush.
3. Rotate the rear wheel by hand and at the
same time spray the chain so that it is fully
lubricated.
4. Lower the machine.
2.5.2 Steering cable
Lubricate the steering cable using chain spray
as below. Use universal type chain spray.
1. Brush the chain clean using a wire brush.
2. Turn the steering wheel and at the same
time spray the cable so that it is fully
lubricated.
Item Chapter / Section
Drive chain 2.3.1
Steering cable 2.3.2
Tensioning arms
and moving joints 2.3.3
Throttle cable 2.3.4
U