Husqvarna R 422Ts AWD User Manual

Oper ator ′ s manual

R 422Ts AWD

Please r ead the operator’s manual carefully and make sure you

understand the instructions before using the machine.

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CONTENTS

Contents

CONTENTS

Contents ...................................................................... 2

Ser vice journal

Pre-deliv ery service ..................................................... 3

After the first 8 hours ................................................... 3

INTR ODUCTION

Dear Customer , ............................................................ 4

Driving and transport on public roads .......................... 4

Towing .......................................................................... 4

Use .............................................................................. 4

Good service ................................................................ 4

KEY TO SYMBOLS

Symbols ....................................................................... 5

WHA T IS WHAT?

Location of the controls ................................................ 7

SAFETY INSTR UCTIONS

Saf ety instructions ........................................................ 8

Driving on slopes ......................................................... 9

Children ....................................................................... 10

Maintenance ................................................................ 10

Transport ...................................................................... 11

PRESENT ATION

Presentation ................................................................. 12

Throttle trigger ............................................................. 12

Choke control ............................................................... 12

Speed limiter ................................................................ 12

Counter ........................................................................ 12

Parking brake ............................................................... 12

Cutting unit ................................................................... 13

Lever for hydraulic lift of attachments ........................... 13

Mechanical Lifting Lever for Cutting Unit ..................... 13

Cutting height adjustment lever ................................... 13

Seat ............................................................................. 14

Fueling ......................................................................... 14

Lights and power outlet ................................................ 14

Release lever ............................................................... 14

Driving

Bef ore starting ............................................................. 15

Start the engine ........................................................... 15

Starting the engine with a weak battery ....................... 16

Driving the Rider .......................................................... 17

Braking ......................................................................... 17

Stop the engine ............................................................ 17

Maintenance

Maintenance schedule ................................................. 18

Cleaning ....................................................................... 20

Removing of the machine hoods ................................. 20

Checking and adjusting the steering wires .................. 21

Adjusting the parking brake ......................................... 21

Checking and adjusting of throttle wire ........................ 22

Checking and adjusting the choke wire ....................... 22

Replacement of fuel filter ............................................. 22

Checking the fuel pump’s air filter ................................ 22

Checking the transmission’s air intake ......................... 22

Replacing the air filter .................................................. 23

Ignition system ............................................................. 23

Cleaning the engine and muffler .................................. 23

Check the safety system .............................................. 24

Replacing the light bulbs .............................................. 24

Main fuse ...................................................................... 24

Checking the tyre pressure .......................................... 25

Checking the engine’s cooling air intake ...................... 25

Replacing the hydraulic pump’s drive belt R 422 Ts

AWD .............................................................................

Replacing the centre belt ............................................. 26

Replacing the front belt ................................................ 26

Fitting the cutting head ................................................. 27

Removing the cutting unit ............................................. 28

Checking and adjustment of the cutting unit’s ground

pressure .......................................................................

Checking the cutting unit’s parallelism ......................... 28

Adjusting the parallelism of the cutting unit .................. 29

Replacing the cutting unit belts .................................... 29

Service position for the cutting unit .............................. 30

Checking the blades ..................................................... 31

Replacing the blades .................................................... 31

Removing the BioClip plug ........................................... 31

Lubrication

Gener al ........................................................................ 32

Accessories .................................................................. 32

Lubricating the cables .................................................. 32

Chains in the frame tunnel ........................................... 32

Links and joints in the cutting adjustment .................... 32

Driver seat .................................................................... 33

Throttle and choke cables, lever bearings .................... 33

Lubricating the belt adjuster ......................................... 33

Checking the engine’s oil level. .................................... 33

Lubricate the hydrostatic cable with links ..................... 34

Changing the oil filter ................................................... 34

Hydraulic oil filter change ............................................. 35

Lubricate the parking brake wire .................................. 35

Checking the transmission oil level .............................. 35

roubleshooting schedule

ELECTRICAL AND HYDRAULIC SYSTEMS

Electr ical system .......................................................... 37

Hydraulic System ......................................................... 38

Stora ge

Winter stor age .............................................................. 39

Guard ........................................................................... 39

Service ......................................................................... 39

echnical data

EC Declar ation of Conformity ....................................... 41

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Ser vice journal

Pre-deliver y service

Charge the battery for 4 hours at max. 3 amp.

2 Fit steering wheel, seat and any optional

equipment.

3 Check and adjust tyre pressure. (60 kPa, 0.6 bar,

9 psi).

4 Adjust cutting unit:

Adjust lift springs (effective weight of cutting unit
should be 12-15kg / 26.5-33 lb).

Adjust cutting unit so that rear edge is about 2-4
mm / 1/8” higher than front edge.

Adjust the cutting unit’s cutting height setting so
that the connection rod is tensed at the lowest
cutting height.

5 Check that the right amount of oil is in the engine.

6 Check that there is oil in the transmission’s oil

tank.

7 Connect battery.

8 Fill with fuel and start engine.

9 Check that machine does not move in neutral.

10 Check:

11 Tell customer about:

Needs and benefits of following the service
schedule.

Servicing and the influence of this journal on the
second-hand value of the machine.

The transmission warranty is only valid if front
and rear wheel rotation speed has be checked in
accordance with the service schedule. Adjust if
necessary according to the table values specified in the
workshop manual. Performed by authorized servicing
dealer. The system will be damaged if this adjustment is
not carried out. (Only AWD-machines)

Range of applications for BioClip.

Complete proof of sale etc.

Pre-delivery service carried out. No outstanding problems.
Certified:

________________________________________________
Date, mileage, stamp, signature

After the fi rst 8 hours

Forward drive.

Reverse drive.

Operation of blades.

Seat safety switch.

Lif lever safety switch.

The safety switch for the hydrostat pedals.

Change engine oil

2 Changing the gearbox oil (Only AWD-machines)

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INTR ODUCTION

Dear Customer ,

Thank y ou for choosing a Husqvarna Rider. Husqvarna Riders are built to a unique design with a front-mounted cutting unit and a
patented articulated steering. Riders are designed for maximum efficiency even in small or confined areas. The closely grouped
controls and pedal-operated hydrostatic transmission also contribute to the performance of this machine.

This operator’s manual is a valuable document. By following its instructions (on operation, service, maintenance, etc.) you will
significantly extend the life of the machine and even its second-hand value.

When you sell your Rider, make sure you pass on the operator’s manual to the new owner.

The last chapter in the operator’s manual consists of a Service Journal. Make sure that all service work and repairs are recorded.
A well-documented service history reduces the costs of seasonal maintenance and influences the second-hand value of the
machine. Bring the operator’s manual with the Rider when bringing it to a workshop for service procedures.

Driving and transpor t on public roads

Chec k the relevant road traffic regulations before driving the machine on a public road. If transporting the machine on another
vehicle always use approved securing devices and make sure that the machine is securely held.

owing

When y our machine is equipped with a hydrostatic transmission you should only tow the machine over short distances and at a
low speed, otherwise there is a risk of damaging the transmission.

The transmission must be disengaged when towing, see instructions under the heading Bypass valves.

Use

This r ide-on mower is designed to mow grass on open and level ground surfaces. In addition, there is a number of accessories
recommended by the manufacturer that broadens the application area. Please contact your dealer for more information about
which accessories are available. The machine may only be used with the equipment recommended by the manufacturer. All other
types of use are incorrect. Compliance with and strict adherence to the conditions of operation, service and repair as specified by
the manufacturer also constitute essential elements of the intended use.

IMPOR TANT INFORMATION The transmission warranty is only valid if front and rear wheel rotation speed has be checked in

accordance with the service schedule. Adjust if necessary according to the table values specified in the workshop manual.
Performed by authorized servicing dealer. The system will be damaged if this adjustment is not carried out. (Only AWD-machines)

This machine should be operated, serviced and repaired only by persons who are familiar with its particular characteristics and
who are acquainted with the relevant safety procedures.

Accident prevention regulations, all other generally recognised regulations on safety and occupational medicine, and all road traffic
regulations must be observed at all times.

Any arbitrary modifications carried out to this machine may relieve the manufacturer of liability for any resulting damage or injury.

Good ser vice

Husqv arna products are sold all over the world and ensures that you, the customer, get the best support and service. For example,
before this machine was delivered it was inspected and adjusted by your dealer. See the certificate in the Service Journal in this
manual.

Use only original spare parts for repairs. The use of other parts will invalidate the warranty.

When you need spare parts or advice on service issues, warranty terms, etc., contact:

This Operator’s Manual belongs to machine with
serial number:

On the machine's rating plate you will find the following information:

• The machines type designation.

• The manufacturer’s type number.

• The machine’s serial number.

State the type designation and serial number when ordering spare parts.

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Engine Transmission

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KEY T O SYMBOLS

Symbols

These symbols are on the machine and in the instr uctions.

WARNING! Careless or incorrect use can
result in serious or fatal injury to the
operator or others.

Please read the operator’s manual
carefully and make sure you understand
the instructions before using the machine.

Always wear:

• Approved hearing protection

This product is in accordance with applicable
EC directives.

Fast

Slow

Noise emission to the environment
according to the European Community’s
Directive. The machine’s emission is
specified in the Technical data chapter and
on the label.

Clutch in

Clutch out

Hot surface.

Cover lock

Warning: rotating parts. Keep hands and
feet clear.

Stop the engine.

Choke.

Fuel

Oil level

Cutting height

Backwards

Forwards

Ignition

Rotary blades Keep hands and feet
away from under the hood when the
engine is running

Risk that the machine will tip over

Never drive across a slope

Never use the machine if persons,
especially children, or animals, are in the
vicinity

Never carry passengers on the machine
or equipment

Drive very slowly if no cutting unit is fitted

Hydrostatic freewheel

Parking brake

Before and during reversing procedures,
look behind you.

English

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Switch off the engine and tak e off the ignition
cable before repairs or maintenance

Brake

Starting instructions

6

KEY T O SYMBOLS

Check the engine’s oil level

Check transmission oil level

Lift up the cutting unit

Apply the parking brake.

If the engine is cold, use the choke

Release the parking brake before driving

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WHA T IS WHA T?

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Location of the contr ols

Power outlet

2 Switch for the power outlet

3 Ignition lock

4 Throttle trigger

5 Switch for the lights

6 Choke control

7 Counter

8 Lever for hydraulic lift of attachments

9 Cutting height adjustment lever

10 Mechanical Lifting Lever for Cutting Unit

11 Speed limiter for reversing

12 Speed limiter for driving forward

13 Parking brake

14 Lock button for parking brake

15 Seat adjustment.

16 Lever to disengage the driving front axle (Only AWD-

machines)

17 Product and serial number plate

18 Fuel cap

19 Cover lock

20 Lever to disengage the driving rear axle

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SAFETY INSTR UCTIONS

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Saf ety instructions

These instr uctions are for your safety. Read them carefully.

Insure y our Rider

Check the insurance coverage for your new Rider.

• Contact your insurance company.

• You should have fully comprehensive insurance including:
third party, fire, damage, theft and liability

General use

Read all the instructions in this operator’s manual and on
the machine before you start it. Ensure you understand
them and then observe them.

• Remember that the driver is responsible for dangers or
accidents.

• Never carry passengers. The machine is only intended to
be used by one person.

• Always look downwards and backwards before and while
reversing. Keep watch for both large and small obstacles.

• Slow before cornering.

• Switch off the blades when you are not mowing.

• Take care when rounding a fixed object, so that the blades
do not hit it. Never run the machine over foreign objects.

ARNING! This machine produces an

electromagnetic field during operation. This

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field may under some circumstances
interfere with active or passive medical
implants. To reduce the risk of serious or
fatal injury, we recommend persons with
medical implants to consult their physician
and the medical implant manufacturer
before operating this machine.

• Learn how to use the machine and its controls safely and
learn to how to stop quickly. Also learn to recognize the
safety decals.

• Only allow the machine to be used by adults who are
familiar with its use.

• Make sure nobody else is in the vicinity of the machine
when you start the engine, engage the drive or drive off.

• Clear the area of objects such as stones, toys, wires, etc.
that may become caught in the blades and be thrown out.

• Look out for the ejector and do not direct it towards
anyone.

• Stop the engine and prevent it from starting before you
clean the cutting unit.

ARNING! This machine can sever hands

and feet as well as throw objects. Failure to

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observe the safety instructions can result in
serious injuries.

ARNING! The inside of the muffler contain

chemicals that may be carcinogenic. Avoid

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contact with these elements in the event of a
damaged muffler.

ARNING! The engine emits carbon

monoxide, which is a colourless, poisonous

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gas. Do not use the machine in enclosed
spaces.

• Only use the machine in daylight or in other well-lit
conditions. Keep the machine at a safe distance from
holes or other irregularities in the ground. Pay attention to
other possible risks.

• Never use the machine if you are tired, if you have
consumed alcohol, if you are taking other drugs or
medication that can affect your vision, judgement or co­ordination.

• Never use the machine in bad weather, for instance in fog,
in rain, damp or in wet locations,strong winds, intense
cold, risk of lightning, etc.

• Keep an eye on the traffic when working close to a road or
when crossing it.

• Never leave the machine unsupervised with the engine
running. Always stop the blades, apply the parking brake,
stop the engine and remove the keys before leaving the
machine.

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SAFETY INSTR UCTIONS

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Never allow children or other persons not trained in the
use of the machine to use or service it. Local laws may
regulate the age of the user.

ARNING! You must use approved personal

protective equipment whenever you use the

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machine. Personal protective equipment
cannot eliminate the risk of injury but it will
reduce the degree of injury if an accident
does happen. Ask your dealer for help in
choosing the right equipment.

• Use hearing protection to minimise the risk of hearing
impairment.

Driving on slopes

iving on slopes is one of the operations where the risk of
the driver losing control of the machine or of it overturning is
the greatest; this can result in serious injury or death. All
slopes demand extra care. If you cannot reverse up a slope or
if you feel unsure, do not mow it.

IMPOR TANT INFORMATION

Do not dr ive down slopes with the cutting deck raised.

This is what y ou do

Remove obstacles such as stones, branches, etc.

• Mow upwards and downwards, not sideways.

>10

• Never wear loose-fitting clothing, jewellery or similar that
can get caught in moving parts.

• Never use the machine when barefoot. Always wear
protective shoes or protective boots, preferably with steel
toes.

• Make sure that you have first aid equipment close at hand
when using the machine.

• Do not use the machine on ground that slopes more than
10 ° .

• Take extra care if any attachments are fitted that can
change the stability of the machine.

• Avoid starting or stopping on a slope. If the tyres start to
slip, stop the blades and drive slowly down the slope.

• Always drive smoothly and slowly on slopes.

• Do not make any sudden changes in speed or direction.

• Avoid unnecessary turns on slopes, if necessary, turn
slowly and gradually downwards if possible. Drive slowly.
Do not turn the wheel sharply.

• Watch out for and avoid driving over furrows, holes and
bumps. It is easier for the machine to overturn on uneven
ground. Tall grass can hide obstacles.

• Do not mow too close to edges, ditches or banks. The
machine can suddenly overturn if one wheel comes over
the edge of a steep slope or a ditch, or if an edge gives
way.

• Do not mow wet grass. It is slippery, and tyres can lose
their grip so that the machine skids.

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SAFETY INSTRUCTIONS

10

• Do not try to stabilize the machine by putting your foot on
the ground.

• When cleaning the chassis, the machine may never be
driven near verges or ditches.

• When mowing, keep away from bushes and other objects.

• Follow the manufacturer’s recommendations regarding
wheel weights or counterbalance weights to increase
machine stability.

IMPORTANT INFORMATION

Wheel weights fitted on the rear wheels are recommended
when driving on slopes for safer steering and improved
manoeuvrability. Consult your dealer concerning the use of
wheel weights if you are unsure. Wheel weights can not be
used on AWD-machines. Use counterweights.

Children

• Serious accidents may occur if you fail to be on your guard
for children in the vicinity of the machine. Children are
often attracted to the machine and mowing. Never
assume that children will remain where you last saw them.

• Keep children away from the area to be mowed and under
close supervision by another adult.

• Keep an eye out and shut off the machine if children enter
the work area.

• Before and during reversing procedures, look behind you
and down for small children.

• Never allow children to ride along. They can fall off and
seriously injure themselves or be in the way for safe
maneuvering of the machine.

• Never allow children to operate the machine.

Maintenance

• Stop the engine. Prevent the engine from starting by
removing the ignition key before making any adjustments
or performing maintenance.

• Never fill the fuel tank indoors.

• Fuel and fuel vapour are poisonous and highly flammable.
Be especially careful when handling petrol and engine oil,
as carelessness can result in personal injury or fire.

• Only store fuel in containers approved for the purpose.

• Never remove the fuel cap and fill the fuel tank when the
engine is running.

• Allow the engine to cool before refuelling. Do not smoke.
Do not fill with fuel in the vicinity of sparks or naked
flames.

• Handle oil, oil filters, fuel and the battery carefully, of
environmental considerations. Follow the local recycling
requirements.

• Electrical shocks can cause injuries. Do not touch cables
when the engine is running. Do not test the ignition
system with your fingers.

WARNING! The engine and the exhaust
system become very hot during operation.

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Risk of burn injuries if touched. When
mowing, keep away from bushes and other
materials in order to avoid a heating effect.

• Be particularly careful near corners, bushes, trees or
other objects that block your view.

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• If leaks arise in the fuel system, the engine must not be
started until the problem has been resolved.

• Store the machine and fuel in such a way that there is no
risk that leaking fuel or fumes can cause any damage.

• Check the fuel level before each use and leave space for
the fuel to expand, because the heat from the engine and
the sun may otherwise cause the fuel to expand and
overflow.

• Avoid overfilling. If you spill petrol on the machine, wipe up
the spill and wait until it has evaporated before starting the
engine. If you spill on your clothing, change your clothing.

• Allow the machine to cool before performing any actions
in the engine compartment.

SAFETY INSTRUCTIONS

• Take care with battery maintenance. Explosive gases
form in the battery. Never perform maintenance on the
battery while smoking or in the vicinity of open flames or
sparks. This can cause the battery to explode and cause
serious injuries.

• Make sure all nuts and bolts are tightened correctly and
that the equipment is in good condition.

• Do not modify safety equipment. Check regularly to be
sure it works properly. The machine must not be driven if
protective plates, protective covers, safety switches or
other protective devices are not fitted or are defective.

• Observe the risk of injury caused by moving or hot parts if
the engine is started with the engine cover open or
protective cowlings removed.

• Do not change the setting of governors. If you run too fast,
you risk damaging the machine components. See chapter
on Technical data for highest permitted engine speed.

• Never use the machine indoors or in spaces lacking
proper ventilation. Exhaust fumes contain carbon
monoxide, an odourless, poisonous and highly dangerous
gas.

• Reduce the risk of fire by removing grass, leaves and
other debris that may have fastened on the machine.
Allow the machine to cool before putting it in storage.

Transport

IMPORTANT INFORMATION

The parking brake is not sufficient to lock the machine
during transport. Ensure you secure the machine firmly to
the transporting vehicle.

• The machine is heavy and can cause serious crush
injuries. Take extra care when loading it onto or off a
vehicle or trailer.

• Use an approved trailer to transport the machine.

• To secure the machine on the trailer, two approved
tension belts and four wedge shaped wheel blocks should
be used.

Engage the parking brake and tie the tension belts around
stable parts on the machine, e.g. frame or rear wagon.
Secure the machine by tensioning the belts towards the
back and the front of the trailer respectively.

Place the wheel blocks in front of and behind the rear
wheels.

• Check and observe local road traffic regulations before
transporting or driving the machine on roads.

• Stop and inspect the equipment if you run over or into
anything. If necessary, make repairs before starting.

• Never make adjustments with the engine running.

• The machine is tested and approved only with the
equipment originally provided or recommended by the
manufacturer.

• The blades are sharp and can cause cuts. Wrap the
blades or wear protective gloves when handling them.

• Check regularly that the parking brake works. Adjust and
maintain as required.

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PRESENTATION

Presentation

Congratulations on your choice of an excellent quality product
that will give you great pleasure for many years. This
operator’s manual describes R 422 Ts AWD. The machine are
equipped with a four-stroke V-Twin engine from Briggs &
Stratton.

The machine are equipped with power steering and hydraulic
lifts. R 422 Ts AWD also have all wheel drive.

The power transmission from the engine is handled by a
hydrostatic transmission, which allows variable variation of
the speed by using the pedals. One pedal for driving forward
and one for reverse.

Throttle trigger

Speed limiter

The speed of the machine is steplessly regulated with two
pedals. Pedal (1) is used to drive forwards, and pedal (2) to
drive backwards.

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WARNING! Make sure that branches do not
obstruct the pedals when mowing under

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bushes. Otherwise there is a risk you may
lose control.

Counter

The chronometer shows how many hours the engine has
been running.

The throttle control regulates the engine speed, and thereby
also the rotation speed of the blades.

To increase or reduce the engine speed the control is moved
forwards or backwards.

Avoid idling the engine for long periods, as there is a risk of
carbon build-up on the spark plugs.

Choke control

The choke lever is used for cold starting and to give the
engine a richer fuel mixture.

For cold starting the lever is moved backwards to its end
position.

Any time when the engine is not running but the ignition is
switched on is not registered. The last digit shows tenths of an
hour (6 minutes).

Parking brake

The parking brake is applied as follows:

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1 Press down the parking brake pedal (1).

2 Press in the lock button (2) on the steering column.

3 Release the parking brake pedal while keeping the button

pressed in.

The parking brake lock disengages automatically when the
brake pedal is pressed.

12 – English

PRESENTATION

Cutting unit

R 422 Ts AWD can be equipped with two different cutting
units. Combi 112 and Combi 122

The Combi-unit, equipped with a BioClip-plug, finely chops
the cuttings to fertiliser. Without the BioClip-plug the unit
works in the same way as a rear ejection unit. The rear ejector
ejects the clippings behind the unit without finely chopping
them.

Lever for hydraulic lift of attachments

The lifting lever is used to put the cutting unit in either the
transport or mowing position when hydraulic pressure is
available.

When the lever is moved to the transport position, the blade
brake is automatically activated so that the blades stop within
about 5 seconds.

Lifting the Cutting Unit (Transport Position)

Pull the lever backwards to engage the transport position. The
cutting unit will lift up and the blades stop rotating.

Mechanical Lifting Lever for Cutting Unit

The lever is used as a backup lever to put the cutting unit in
either the transport or mowing position when hydraulic
pressure is unavailable. It can also be used to mechanically
secure the cutting unit in the transport position.

The lever must be used when starting the engine, if the
engine stopped with the unit in the mowing position, in order
to raise the unit so that the start lock circuit is disengaged.

When the lever is moved to the transport position, the blade
brake is automatically activated so that the blades stop within
about 5 seconds.

Transport position

If the lever is pulled backwards the unit is raised and the
blades automatically stop rotating (transport position).

Secure the cutting unit if necessary using the mechanical
lifting lever.

Lowering the Unit (Mowing Position)

If the cutting unit is secured in the transport position using the
mechanical lifting lever, move the mechanical lifting lever to
the cutting position.

Move the hydraulic lifting lever forwards to engage the cutting
position. The unit is lowered and the blades begin to rotate.

Mowing Position

If the lock button is pressed in and the lever is moved forwards
the unit will be lowered and the blades will automatically start
to rotate (mowing position).

If this does not happen it is probably because the unit has
been lifted with the hydraulic lifting lever. Lower the unit to the
mowing position with the lever for the hydraulic lift.

Cutting height adjustment lever

The cutting height can be adjusted to 7 different positions with
the cutting height lever.

In order to ensure that the hydraulic cylinder is in the outer
position, hold the lever in the forward position for a half to one
second.

It is important that the air pressure in both front wheels is
equal, 60 kPa/8.5 PSI, to produce an even cutting height.

English – 13

PRESENTATION

Seat

The seat has a jointed attachment on the front edge and can
be tipped forward.

The seat can also be adjusted lengthways.

To adjust move the lever under the front edge of the seat to
the left, so that the seat can be moved forward or backwards
to the required position.

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The seat springing can be adjusted by moving the rubber
stops in their mountings on the underside of the seat. Place
both stops in the front, middle or rear.

Lights and power outlet

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The lights are switched on and off using the power switch (1)
on the control panel.

A seat heater or mobile phone charger are examples of
articles that can be connected to the power socket (2).

The power outlet is switched on and off using power switch (3)
on the control panel.

The voltage is 12 V.
The power outlet is fuse protected by its own fuse, which is

located below the ignition switch.

Release lever

The release control must be pulled out in order for the
machine to be moved when the engine is shutoff.

Should you attempt to drive the machine with the clutch
controls pulled out it will not move. The drive on the axle is
disengaged when one of the controls is pulled out.

Pull the controls to the end positions, do not use an
intermediate position.

R 422 Ts AWD have one control for the front axle and one
control for the rear axle.

Fueling

The engine runs on unleaded petrol with a minimum octane
rating of 87 (not mixed with oil). We recommend the use of
biodegradable alkylate petrol. (max. methanol 5%, max.
ethanol 10%, max. MTBE 15%)

Do not fill the tank completely, leave an expansion area of at
least 2.5 cm (1“).

WARNING! Petrol is highly inflammable.
Exercise care and refuel outdoors (see

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safety instructions).

IMPORTANT!

Do not use the fuel tank as a support area.

IMPORTANT! Always drive the machine with both clutch
controls pressed in.

• Clutch control, rear axle

- Control drawn out, drive system disengaged.

- Control depressed, drive system engaged.

• Clutch control, front axle

The control is positioned on the inside of the left front
wheel.

14 – English

- Rear control (pulled out), drive system disengaged.

- Front control (pushed in), drive system engaged.

Driving

2

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Before starting

• Read the safety instructions and information concerning
the placement of controls and functions before starting.

• Perform daily maintenance before starting as set out in
the Maintenance schedule.

WARNING! Do not use the machine on
ground that slopes more than 10

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slopes upwards and downwards, never
across. Avoid sudden changes in direction.

IMPORTANT INFORMATION The air intake grille in the

engine cover behind the driver’s seat must not be blocked
by, for example, clothing, leaves, grass or dirt. Impaired
cooling of the engine. Risk of major engine damage.

Clear the lawn from stones and other objects which can be
thrown out by the blades.

°. Mow

Start the engine

1 Make sure that the clutch control is depressed. R 422 Ts

AWD have one control for the front axle and one control
for the rear axle.

2 Lift up the cutting unit by pulling the lever backwards to

locked position (transport position) and apply the parking
brake.

The engine can not be started if the parking brake is not
pressed down.

3 Move the throttle control to the middle position.

• Localise and mark stones and other fixed objects to avoid
collision.

• Start with a high cutting height and reduce down until the
required mowing results are obtained.

• The mowing result will be best with the highest permitted
engine speed, see technical data, (the blades rotate
rapidly) and low speed (the Mower moves slowly). If the
grass is not too high and thick, the driving speed can be
increased without noticeably depreciating the mowing
result.

• The best lawns are achieved if the grass is cut often.
Mowing becomes more uniform and the grass cuttings
become more evenly distributed over the surface. The
total time consumption is not greater since it is possible to
select a higher driving speed without inferior mowing
results.

• Avoid mowing a wet lawn. The mowing results are inferior
since the wheels sink down into the soft lawn.

• Hose down the cutting unit with water underneath each
time it is used, avoid using a high pressure washer. The
cutting unit should then be put in the service position.

• When the BioClip function is used, it is very important that
the mowing interval is not too long.

4 If the engine is cold move the choke lever backwards to its

end position.

5 Turn the ignition key to the start position.

English – 15

Driving

6 When the engine starts release the ignition key

immediately back to neutral position.

IMPORTANT INFORMATION

Do not run the starter for more than about 5 seconds at a
time. If the engine does not start, wait about 15 seconds
before trying again.

7 Push the choke lever gradually forward when the engine

has started.

Connecting the jump leads

WARNING! Never connect the negative
terminal of the fully-charged battery to, or in

!

the vicinity of, the negative terminal of the
discharged battery. Hydrogen gas may be
present with risk of explosion.

8 Let the engine run at moderate speed or half throttle for 3-

5 minutes before subjecting it to heavy load.

9 Set the required engine speed with the throttle control.

WARNING! Never run the engine indoors, in
enclosed or poorly ventilated areas. The

!

exhaust fumes contain toxic carbon
monoxide.

Starting the engine with a weak battery

WARNING! Lead-acid batteries produce
explosive gases. Avoid sparks, open flames

!

and smoking close to batteries. Always wear
protective glasses in the vicinity of batteries.

• Connect each end of the red cable to the POSITIVE pole
(+) on each battery, exercise care not to short circuit any
of the ends against the chassis.

• Connect one end of the black cable to the NEGATIVE pole
(-) on the fully charged battery.

• Connect the other end of the black cable to a good
CHASSIS EARTH, away from the fuel tank and the
battery.

Remove the cables in the reverse order

• The BLACK cable is removed from the chassis and then
the fully charged battery.

• Finally the RED cable from both batteries.

IMPORTANT INFORMATION Never use a boost charger/
start booster.

Use only conventional battery chargers. Always disconnect
the charger before starting the engine. So called boost
chargers/start boosters must never be used. These will
often increase the voltage (instead of the current) to
generate the power needed to start the engine. This
increase in voltage will damage the electrical system.

If the battery is too weak to start the engine, it should be
recharged.

When jump leads are used for emergency starting, follow the
procedure below:

IMPORTANT INFORMATION Your Rider is equipped with a
12-volt system with negative earth. The other vehicle must
also have a 12-volt system with negative earth. Do not use
your Rider battery to start other vehicles.

16 – English

Driving

Driving the Rider

1 Release the parking brake by first pressing down the

parking brake pedal and then releasing it.

2 Carefully press down one of the pedals until the required

speed is obtained. Pedal (1) is used to drive forwards, and
pedal (2) to drive backwards.

1

2

3 Press in the lock button on the mechanical lifting lever and

lower the cutting unit.

Braking

Release the drive pedals. The machine slows and is stopped
by the drive system. Do not use the parking brake as the drive
brake.

Quicker braking is possible if you press down the drive pedal
for the opposite direction.

Stop the engine

Always park the machine on a level surface with the engine
OFF. Avoid idling the engine for long periods, as there is a risk
of carbon build-up on the spark plugs.

1 Lift the cutting unit with the hydraulic lifting lever.

The unit can then be secured in the raised position if
necessary by moving the mechanical lifting lever
backwards to the lock position.

If the cutting unit does not lower completely, or if the
blades do not rotate, lower the cutting unit completely
using the hydraulic lifting lever. In order to ensure that the
hydraulic cylinder is in the outer position, hold the lever in
the forward position for a half to one second.

4 Select the required cutting height (1-10) with the cutting

height lever.

It is important that the air pressure in both front wheels is
equal, 60 kPa / 0,6 bar / 8.7 PSI, to produce an even
cutting height.

If the cutting unit is left in the lower position, the start lock
circuit will prevent engine starts.

2 Move the throttle control to the MIN. position. Turn the

ignition key to the ”STOP”.

3 When the Rider is at a standstill, press down the parking

brake and push in the locking button.

2

1

IMPORTANT INFORMATION

The life span of the drive belts is increased significantly if
the engine runs at a low speed when the blades are
engaged. Therefore apply full throttle first when the cutting
unit has been moved to the mowing position.

English – 17

Maintenance

Maintenance schedule

The following is a list of the maintenance which should be conducted on the machine. For those points not described in this manual,
visit an authorised service workshop.

Daily

Maintenance

Cleaning X

Check the engine’s oil level X

Check the engine’s cooling air intake X

Check the fuel pump air filter X

Check the steering wires X

Check the level of the battery acid X

Check the safety system X

Check nuts and screws O

Check for fuel and oil leakage. O

Clean around the silencer O

Start engine and blades, listen for noise O

Clean transmission air intake X X

Change engine oil

Check the cutting deck X X

Checking the blades X

Clean underside of cutting unit X

Check the air pressure in the tyres, 60 kPa/8.5 PSI. X

Lubricate belt tensioner (nipple) X X

Lubricate the driver’s seat X

Lubricate all wires X

Lubricate bearing surfaces on cutting unit X

Clean inside frame tunnel X

Lubricate the pedal system in the frame tunnel X

Lubricate the hydrostatic cable with links X

Check the parking brake X

Lubricate the parking brake wire X

Lubricate throttle control X

Lubricate choke control X

Lubricate the chain in the frame tunnel X

Check steering chain inside frame tunnel X

Check for damage to wire guide at articulated joint O

Clean thoroughly around engine X

Clean thoroughly around transmission X

Check the V-belts O

Check the cooling fins on the hydrostatic transmission X X

Checking the transmission oil level X

1)

maintenance
before
starting

Weekly
maintenance

3)

At least
once a
year

X X1)X

Maintenance
interval in hours

25 50 100 250

1)

18 – English

Maintenance

Daily

Maintenance

Checking and adjusting the choke wire X

Tighten the nuts and screws O

Checking and adjusting of throttle wire X

Clean the air filter. X X

Check/adjust cutting height setting X X

Check/adjust parking brake X X

Clean the cooling fins on the engine and hydrostatic
transmission

Replace the air filter. X

Replace the fuel filter. X

Replace the spark plug. X

Check to see whether the oil
changing in the gear box

Replace the engine oil filter X X

Replace the suction filter in the hydraulic tank

Check front and rear wheel rotation speed according to the
service schedule.

Carry out 300 hour service

2)

4,5)

4,5)

4)

or the filter

4,5)

needs

4)

maintenance
before
starting

Weekly
maintenance

3)

At least
once a
year

O

O

O O

Maintenance
interval in hours

O

O

1)

First change after 8 hours. When operating with a heavy load or at high ambient temperatures, replace every 50 hours.
Maintenance and replacement are required more often in dusty conditions. 3)If the machine is used daily it should be lubricated
twice a week. 4)Conducted by authorised service workshop. 5)Only R 422 Ts AWD first change after 8 hours

X = Described in this operator's manual

O = Not described in this operator's manual

WARNING! No service procedures must be conducted on the engine or cutting unit unless:

2)

!

The engine is switched off.

The parking brake is applied.

The ignition key is removed.

The cutting unit is disengaged.

The ignition cables are removed from the plugs.

IMPORTANT! When the machine is in operation the hoses are under high pressure. Do not try to connect or disconnect the hoses
when the hydraulic system is operational. This can result in serious personal injuries.

English – 19

Maintenance

Cleaning

Clean the machine directly after use. It is much easier to wash
off grass cuttings before they dry.

IMPORTANT INFORMATION Always park the machine on
a level surface with the engine OFF before performing any
maintenance.

Oily dirt can be removed using a cold degreasing agent.
Spray on a thin layer.

Rinse at normal water pressure.

Do not direct the jet towards electrical components or
bearings.

Do not rinse hot surfaces such as the engine and exhaust
system.

It is recommended that you start the engine and run the
mower for a short period after cleaning, so that any remaining
water is blown off.

Lubricate the machine if necessary after cleaning. Carry out
extra lubrication when the bearings have been exposed to a
degreaser or a water jet.

Front cover

Release the clip on the front hood and lift off the fender.

The front cover is secured to the unit frame with two hooks.

Right-hand fender

Remove the accelerator knob (1), screws (2 and 3), and
remove the cover.

IMPORTANT INFORMATION Avoid using a high pressure
washer or a steam cleaner. There is a major risk of water
penetrating into bearings and electrical connections.

Corrosion attack can result, which will lead to running
problems. Cleaning additives generally aggravate the
damage.

Removing of the machine hoods

Engine cover

Pull the seat forward to its foremost position. Fold up the seat.

Pull the snap catches on the engine cover backwards. The
snap catches are located on the inside of the engine frame.

Left-hand fender

Remove the screws holding the wing cover (2) and lift off the
cover.

Transmission cover

Undo the two screws (one on each side) and lift off the
transmission cover.

Open the engine cover forwards.

20 – English

Maintenance

Checking and adjusting the steering wires

The steering is controlled by means of wires.

These can in time become slack, which implies that the
adjustment of the steering becomes altered.

Check and adjust the steering as follows:

1 Remove the frame plate by loosening the screws (2) and

lift the frame plate by the rear edge.

2 Check the tension of the steering wires by squeezing

them together by the arrows as illustrated. It should be
possible to push them together so that the distance
between them is half as much, without using unnecessary
force.

If the adjustment is only made on one side, the middle
position of the steering will be affected.

Check the wire tension on completion of the adjustment
as per item 2.

5 Screw on the belt shields and the side protectors.

Remember to use the right screws in each mounting.

Adjusting the parking brake

Check that the parking brake is adjusted correctly by placing
the machine on a slope with the front and rear axles
disengaged.

Apply and lock the parking brake. When the machine does not
stand still, the parking brake should be adjusted according to
the following.

1 Position the machine on flat ground.

2 Make sure the parking brake is released.

3 Remove the left-hand wing cover.

3 If necessary, the wires can be adjusted by tightening the

adjuster nuts on each side of the steering collar. Do not
over tighten the cables; they should only be drawn in
towards the steering collar.

4 Unscrew the belt shields and the side protectors. The

protectors are fitted on both sides of the machine.

4 Loosen the locking nuts.

5 Adjust the play between the casing and the adjustment

screw to 1 mm (0.040") when one pulls the casing. This
gives a play on the pedal of approximately 40 mm.

6 Tighten the nuts carefully to prevent damaging the

adjuster screw.

7 The brake should be checked again after adjustment

8 Assemble the left-hand wing cover.

WARNING! A poorly adjusted parking brake
can result in reduced braking ability.

!

Hold the cable, for example using an adjustable wrench,
so that it does not twist.

English – 21

Maintenance

Checking and adjusting of throttle wire

Check that the engine responds to the throttle control and that
the correct engine speed is achieved at full throttle.

If doubts arise, contact your service representative.

If adjustment is necessary, adjust the lower wire as follows:

1 Loosen the clamping screw for the cable’s outer casing

and move the throttle to the full throttle position.

2 Check that the throttle wire is attached to the correct hole

in the lower lever, see diagram.

3 Pull the throttle wire casing to the far left and tighten the

clamping screw.

Replacement of fuel filter

Replace the fuel filter every 100 running hours (once per
season) or more frequently if it is clogged.

Replace the filter as follows:

1 Open the engine cover.

2 Move the hose clips away from the filter. Use a pair of flat

pliers.

3 Pull off the filter from the hose ends.

4 Press the new filter into the ends of the hoses. If

necessary apply liquid detergent to the ends of the filter to
facilitate connection.

5 Push the hose clips back on the filter and tighten.

Checking the fuel pump’s air filter

Checking and adjusting the choke wire

If the engine is producing black smoke or is difficult to start
then the choke wire (upper wire) may be incorrectly adjusted.

If doubts arise, contact your service representative.

If it is necessary to adjust the choke, proceed as follows:

1 Release the clamping screw that secures the wire casing

and set the choke control to maximum choke.

2 Check that the throttle wire is attached to the upper lever,

see diagram.

3 Pull the choke wire casing to the far right and tighten the

clamping screw.

Check regularly that the fuel pump’s air filter is free from dirt.

The filter can when necessary be cleaned with a brush.

Checking the transmission’s air intake

Check that the transmission’s air intake in not blocked.

Remove the transmission cover and clean any grass cuttings
from the transmission’s cooling fins if necessary.

22 – English

Cooling is impaired if the air intakes are blocked or the
transmission housing is dirty, this can result in damage to the
transmission.

Maintenance

Replacing the air filter

WARNING! The exhaust system is hot. Let it
cool before starting to replace the air filter.

!

If the engine seems to lack power or does not run smoothly
this may be because the air filter is clogged. It is therefore
important to replace the air filter at regular intervals (see
Maintenance/Maintenance Schedule for the correct service
interval).

Replace the air filter as follows:

1 Open the engine cover.

2 Loosen the knobs holding the filter cover in place and

remove it.

IMPORTANT INFORMATION

Never run the engine without the air filter fitted.

The filters must not be oiled. They must be fitted dry.

3 Pull up the filter at one edge and lift it out.

4 Remove the foam rubber prefilter which is placed around

the filter cartridge and clean using a mild detergent.
Squeeze it dry in a clean cloth.

Clean the filter by knocking it with care against a hard
surface. Do not use compressed air to clean the filter.
Replace the air filter if it is still dirty. If the paper filter is still
dirty it should be replaced with a new one.

Refit the pre-filter on the paper filter.

5 Put the filter cartridge back in place. Make sure the filter

cartridge is correctly fitted in the filter housing.

6 Refit the air filter cover.

Ignition system

The engine is equipped with an electronic ignition system.
Only the spark plug requires maintenance.

For recommended spark plug, see Technical data.

IMPORTANT INFORMATION

Fitting the wrong spark plug type can damage the engine.

Replacing the spark plug

1 Remove the ignition cable shoe and clean around the

spark plug.

2 Remove the spark plug with a 3/4” (19 mm) spark plug

socket wrench.

3 Check the spark plug. Replace the spark plug if the

electrodes are burned or if the insulation is cracked or
damaged. Clean the spark plug with a steel brush if it is to
be reused.

4 Measure the electrode gap with a gapping tool. The gap

should be 0.75 mm/0.030”. Adjust as necessary by
bending the side electrode.

5 Reinsert the spark plug, turning by hand to avoid

damaging the threads.

6 Tighten the spark plug, once it touches the seating, with

the spark plug spanner. Tighten the spark plug so that the
washer is compressed. A used spark plug should be
turned 1/8 of a turn from the seated position. A new spark
plug should be turned a 1/4 turn from the seated position.

7 Replace the ignition cable shoe.

IMPORTANT INFORMATION

Inadequately tightened spark plugs can cause overheating
and damage the engine. Tightening the spark plug too
much can damage the threads in the cylinder head.

Cleaning the engine and muffler

Keep the engine and muffler free from grass cuttings and dirt.
Grass cuttings steeped in petrol or oil on the engine can
increase the fire risk and impair cooling.

Allow the engine to cool before cleaning. If the dirt is mixed
with oil, remove it using a degreasing agent otherwise just
water and a brush.

Grass cuttings around the muffler dry quickly and constitute a
fire risk. Brush or wash them off when the muffler is cold.

English – 23

Maintenance

Check the safety system

The machine is equipped with a safety system that prevents
starting or driving under the following conditions.

The engine must only be possible to start when the following
conditions are met:

• The cutting unit is in raised position.

• The parking brake is applied.

The engine must stop under any of the following conditions:

• The cutting deck is lowered and the driver rises from the

seat.

• The cutting deck is in its raised position, the parking brake

is not applied and the driver rises from the seat.

Check daily to ensure that the safety system works by
attempting to start the engine when one of the conditions
above is not met. Change the conditions and try again.

Replacing the light bulbs

For information about the bulb type, see Technical Data.

1 Unscrew the two screws holding the cover on the power

servo housing.

7 Insert the new bulbs. Make sure you use your thumb to

support the front.

8 Refit the cables, lamp insert and the cover on the power

servo housing.

Main fuse

The main fuse is placed in a detachable holder under the
battery case’s cover, in front of the battery. Type: Flat pin, 15
A.

2 Lift up the cover and turn it around the steering shaft.

3 Unscrew the two screws holding the lamp insert.

4 Lift out the lamp insert.

5 Disconnect the cables from the bulbs.

The fuse for the power outlet is placed under the ignition
switch, behind the side plate on the control panel. Type: Flat
pin, 7,5 A.

Do not use any other type of fuse when replacing.

A blown fuse is indicated by a burnt connector. Pull the fuse
from the holder when replacing.

The fuse is there to protect the electrical system. If it blows
again shortly after replacement, it is due to a short circuit,
which must be fixed before the machine can be put into
operation again.

6 Lift out the bulbs from the insert.

24 – English

Maintenance

Checking the tyre pressure

The tyre pressure should be 60 kPa (0.6 bar / 9 PSI) all round.
To improve driving the pressure on the rear tyres can be
reduced to 40 kPa (0.4 bar/5.6 PSI). The maximum tyre
pressure is 100 kPa (1,0 bar/14 PSI).

IMPORTANT INFORMATION

Different tyre pressures on the front tyres will result in the
blades cutting the grass at different heights.

Checking the engine’s cooling air intake

Clean the air intake grille in the engine cover behind the
driver’s seat.

Replacing the hydraulic pump’s drive belt R 422 Ts AWD

1 Remove the transmission cover.

2 Unhook the spring on the belt tensioner

3 Remove the belt guide for the centre belt.

4 Pull off the centre belt from the engine's pulley and pull out

the rear section.

Open the engine cover.

Check that the cooling intake is free from leaves, grass and
dirt.

Check the air duct, located on the inside of the engine cover,
ensure it is clean and does not rub against the cooling air
intake.

A blocked cooling intake will interfere with the cooling of the
engine, which can damage the engine.

5 Remove the cooling fan, it is held in place by a nut.

6 Pull the belt off of the pump's pulley.

7 Pull the belt off of the engine's pulley and move it under

the engine belt pulleys.

WARNING! The cooling air intake rotates
when the engine is running. Mind your

!

fingers.

8 Pull out the belt through the opening under the pivot

bearing and past the belt tensioner's disc.

English – 25

Maintenance

Assembly

1 Pull the belt through the opening under the pivot bearing

and on the outside past the belt tensioner's disc.

2 Pull the belt under the engine belt pulleys and fit it on the

engine belt pulley.

3 Fit the belt on the pump's pulley.

4 Fit the cooling fan.

Replacing the centre belt

Remove the rear belt guide for the centre belt.

Remove the centre belt and mount a new belt.

Fit and adjust the belt guide with the lower belt on the engine
belt pulley.

Fit the hose holder.

Check and adjust the belt tensioner. This is especially
important when fitting a new belt.

5 Check that the centre belt is fitted correctly on its front

pulley and fit the centre belt on the engine's pulley.

6 Fit the belt guide for the centre belt.

7 Fit the spring on the belt tensioner.

Replacing the front belt

The entire belt is removed according to the following when a
snow blade is to be attached to the machine.

1 Put the unit in the service position, see Service position

for the cutting unit.

26 – English

2 Pull the centre belt off of the centre pulley. The belt

becomes slack when the cutting unit is lifted.

3 Take off the front belt from the centre pulley and remove

the belt.

Maintenance

Assembly

1 Fit the front belt on the centre pulley. Pull it on the outside

of the runner wheel and on the inside of the idler pulley.

2 Fit the centre belt on the centre pulley.

4 Push the deck in and put the front guide plugs in the

grooves on the equipment frame, one on each side.

WARNING! Observe caution to avoid
trapping your hand.

!

5 Push the unit in so that the interior plugs touch the bottom

of the equipment frame’s grooves.

6 Lift up the cutting unit

3 Reset the cutting unit from service position to mowing

position.

Fitting the cutting head

WARNING! Wear protective glasses when
fitting the cutting unit. The spring which

!

tensions up the belt may break and cause
personal injury.

1 Place the machine on a flat surface and apply the parking

brake. Check that the lever for setting the cutting height is
in the lowest position.

2 Push the equipment frame down and place the catch

against the frame.

7 Fit the drive belt around the drive wheels of the cutting

unit. Hook up the height adjustment strut.

8 Secure the collet spring.

Fit the front cover.

3 Remove the drive belt and place it in the belt holder.

English – 27

Maintenance

Removing the cutting unit

WARNING! Wear protective glasses when
dismantling the cutting unit. The spring

!

which tensions up the belt may break and
cause personal injury.

1 Carry out points 1-6 to put the cutting unit in the service

position, see Service position for the cutting unit.

2 Lower the cutting unit.

3 Open the unit catch.

Checking and adjustment of the cutting unit’s ground pressure

To achieve the best cutting results the cutting unit should
follow the underlying surface without pressing too hard
against it.

Pressure is adjusted using a screw and spring on each side
of the Rider.

1 Check the air pressure in the tyres 60 kPa / 0.6 bar / 9 PSI.

2 Place the machine on a flat surface.

3 Put the lifting lever in the mowing position.

4 Place a set of bathroom scales under the cutting unit’s

frame (front edge) so that it rests on the scales. If
necessary a block can be placed between the frame and
scales so that the support wheels do not bear any weight.

4 Pull out the cutting unit.

WARNING! Observe caution to avoid
trapping your hand.

!

5 Adjust the unit’s ground pressure by screwing in or out the

adjusting screws located behind the front wheels on both
sides. The ground pressure should be between 12 and 15
kg (26.5-33 lb).

Checking the cutting unit’s parallelism

Check the cutting unit’s parallelism as follows:

1 Check the air pressure in the tyres 60 kPa / 0.6 bar / 9 PSI.

2 Place the machine on a flat surface.

3 Put the lifting lever in the mowing position.

4 Measure the distance between the ground and the front

and rear edges of the cutting unit hood. The cutting unit
should have a slight slant, with the rear edge 2-4 mm (1/
8”) higher than the front edge.

28 – English

Maintenance

Adjusting the parallelism of the cutting unit

1 Remove the front hood and right-hand fender.

2 Unscrew the belt shield.

3 Undo the nuts on the lift strut.

Replacing the cutting unit belts

WARNING! Wear gloves to protect your
hands when working with the blades.

!

There is a risk of crush injuries when
working with the belt.

On these cutting units with collision-proof blades, the blades
are driven by one V-belt. Do as follows to change the V-belt:

1 Remove the cutting unit.

2 Open the lock for the track rod bolt.

Remove the bolt so the track rod is released in one end.

4 Screw out (extend) the stay to raise the rear edge of the

cover.

Screw in (shorten) the stay to lower the rear edge of the
cover.

5 Tighten the nuts after adjustment.

6 On completion of the adjustment the unit’s parallelism

should be re-checked.

7 Screw on the belt shield.

3 Unscrew the bolt holding the unit frame bracket.

4 Remove the lock and pass the unit frame out.

5 Remove the two bolts on the unit frame.

8 Fit the right-hand fender and the front hood.

English – 29

Maintenance

6 Remove the screws on the cutting cover. Lift the unit

frame and remove the cutting unit cover.

7 Loosen the spring that tensions the V-belt and pry off the

belt.

Simply reverse the procedure to fit the new belt.

Service position for the cutting unit

The cutting head can be placed in the service position to
provide easy access for cleaning, repairs and servicing. In the
service position the cutting unit is raised and locked in the
vertical position.

4 Disengage the spring for the drive belt tensioning wheel.

Loosen on the cutting height stay and place in the holder.

WARNING! Observe caution to avoid
trapping your hand.

!

5 Remove the drive belt and place it in the belt holder.

Placing in the service position

1 Position the machine on flat ground. Apply the parking

brake.

2 Set the cutting height control in the lowest position and lift

up the cutting unit.

3 Remove the front hood by removing the pin. (There are

complete instructions on using the service position inside
the front hood).

6 Grip the front edge of the unit and pull forwards until it

stops.

7 Lift the unit until it stops and a clicking sound is heard. The

unit locks automatically in the vertical position.

!

30 – English

WARNING! Wear protective glasses when
dismantling the cutting unit. The spring
which tensions up the belt may break and
cause personal injury.

Maintenance

Restoring from service position

1 Grip the front edge of the unit and loosen the lock, fold

down and slide in the unit.

2 Replace the cutting height stay and the belt.

3 Tension the belt with the belt adjuster.

4 Fit the front cover.

Checking the blades

To achieve the best mowing results it is important that the
blades are undamaged and well-sharpened.

Check that the blades’ attachment screws are tight.

• The blade must be mounted with the angled ends pointing
up towards the cover.

• Tightening torque 45-50 Nm (4.5-5 kpm/32-36 lbft).

15mm

WARNING! Wear gloves to protect your
hands when working with the blades.

!

IMPORTANT INFORMATION Always exercise care and
use your common sense. Avoid all situations which you
consider to be beyond your capability. If you still feel
uncertain about operating procedures after reading these
instructions, you should consult an expert before
continuing. Contact an authorised service workshop.

Always use genuine parts. For more information, see the
”Technical data” section.

If the blades hit a foreign body such as a stone, they should
be inspected before using them again.

IMPORTANT INFORMATION

One or more unbalanced blades , caused by damage or
poor balancing after sharpening, can cause vibrations in
the machine.

Replacing the blades

• Put the unit in the service position, see Service position
for the cutting unit.

• Lock the blade with a wooden block. Loosen the blade bolt
and remove the blade bolt, the washer and the blade.

Removing the BioClip plug

To change a Combi unit from BioClip function to cutting unit
with rear ejection, remove the BioClip plug located under the
unit with three screws.

1 Put the unit in the service position, see Placing in the

service position.

2 Remove the three screws holding the BioClip plug, and

remove the plug.

3 Tip: Fit three full-thread screws M8x15 mm in the screw

holes to protect the threads.

4 Replace the unit in normal position.

Fit the BioClip plug in the reverse order.

Assemble the parts in the reverse order.

English – 31

Lubrication

General

Remove the ignition key to prevent unintentional movements
during lubrication.

When lubricating with an oilcan, it ought to be filled with
engine oil.

When lubricating with grease, unless otherwise stated,
grease 503 98 96-01 or another chassis or ball bearing
grease offering good corrosion protection shall be used.

If the machine is used daily it should be lubricated twice a
week.

Wipe away excess grease after lubrication.

It is important to avoid getting lubricant on the belts or the
drive surfaces on the belt pulleys. Should this happen,
attempt to clean them with spirits. If the belt continues to slip
after cleaning with spirits, it must be replaced.

Petrol or other petroleum products must not be used to clean
belts.

Accessories

Lubrication or other maintenance of optional equipment or
accessories is not described in this manual. This equipment
too, naturally, requires maintenance. See the manuals for the
respective accessories for instructions.

Pedal system in the frame tunnel

Lubricate the pedal system in the frame tunnel.

• Remove the cover of the frame tunnel by loosening the
screws (two on the steering servo housing).

• Work the pedals and lubricate the moving parts with oil.
Lubricate the cables for the brake and drive pedals with
oil.

Lubricating the cables

Grease both ends of the cables and move the controls to end
stop positions when lubricating.

Re-attach the rubber covers on the cables after lubrication.

Cables with sheaths will jam if they are not lubricated
regularly. A jammed cable may cause malfunction, such as
the parking braking being applied. If a cable binds, remove
the cable and hang it vertically. Lubricate it with thin engine oil
until the oil begins to escape from the bottom.

A tip: Fill a small plastic bag with oil and tape it so that it seals
against the casing and allow the cable to hang vertically from
the bag overnight. If you do not succeed in lubricating the
cable, it must be replaced.

Cutting unit

Remove the front cover.

Lubricate with oil.

- Joints and bearings

Chains in the frame tunnel

Remove the frame plate by loosening the two screws.

Lubricate the chains in the frame tunnel with oil or chain
lubricant spray. Lubricate the steering cable pulley axle with
grease.

Links and joints in the cutting adjustment

Lubricate the links and the joints for the cutting height
adjustment stay behind the right front wheel. Lubricate with
oil.

32 – English

Lubrication

Driver seat

Fold up the seat.

Lubricate the lengthways adjustment runners with oilcan.

Throttle and choke cables, lever bearings

• Remove the right side cover on the lever housing (3
screws) and open the engine cover.

• Lubricate the cables’ free ends with the oilcan, even those
by the engine.

• Move the controls to the end points and lubricate again.

2 Lubricate using a grease gun, 1 nipple from the right-hand

side under the engine’s lower belt pulley, until grease is
forced out.

3 Use only good quality molybdenum disulphide grease.

4 Screw on the belt shield.

* Grease from well-known brand names (petrochemical
companies, etc.) usually maintains a good quality.

Checking the engine’s oil level.

• Lubricate the joints, catches, and bearings for the cutting
unit’s control levers with oil.

Replace the lever housing’s side cover.

Lubricating the belt adjuster

The belt adjuster should be lubricated regularly using good
quality molybdenum disulphide grease*.

1 Unscrew the belt shield.

Check the oil level in the engine when the Rider stands
horizontal with the engine switched off. Do not check the oil
with the engine running.

Open the engine cover.

Loosen the dipstick, pull it up and wipe it off.

Now insert the dipstick again, without tightening it.

Pull the dipstick out again and read the oil level.

The oil level should be between the markings on the dipstick.
If the level is approaching the ADD mark, top up the oil to the
FULL mark on the dipstick.

The oil is topped up through the hole the dipstick sits in. Fill
the oil slowly.

Tighten the dipstick correctly before starting the engine. Start
and run the engine at idling speed for approx. 30 seconds.
Turn off the motor. Wait 30 seconds and check the oil level. If
necessary fill so that the oil comes up to the FULL mark on
the dipstick.

The following oil classes are recommended:

• API Service Class: SF, SG, SH and SJ

English – 33

Lubrication

Choose an oil with viscosity according to the temperature
ranges in the figure:

Do not mix different types of oil.

Caution when using oils such as 5W-20, 10W-30 and 10W-40
the engine’s oil consumption increases. If these oils must be
used, check the oil level frequently.

Replacing the engine oil

Open the engine cover.

The engine oil should be changed the first time after 8 hours
running time. It should then be changed after every 100 hours
of running time.

When operating with a heavy load or at high ambient
temperatures, replace every 50 hours.

WARNING! Engine oil can be very hot if it is
drained directly after stopping the engine.

!

Allow the engine to cool somewhat first.

1 Place a container underneath the engine’s left oil drain

plug.

Lubricate the hydrostatic cable with links

Remove the transmission cover.

Lubricate the joints and bearings on the left side with oil.

Remove the rubber casing and lubricate the hydrostatic
transmission cable with oil.

Press the pedal a few times, lubricate again and refit the
rubber casing.

Replace the transmission cover.

Changing the oil filter

WARNING!
Engine oil can be very hot if it is drained

!

directly after stopping the engine. Allow the
engine to cool somewhat first.

2 Remove the dipstick. Remove the drain plug from the

engine’s left side.

3 Let the oil run out into the container.

4 Fit the drain plug and tighten it.

5 If necessary fill so that the oil comes up to the FULL mark

on the dipstick. The oil is topped up through the hole the
dipstick sits in.

6 Run the engine warm, then check that there is no leakage

from the oil plug.

Check the engine oil level and top up if necessary.

IMPORTANT INFORMATION

Used engine oil, antifreeze etc. is a health hazard and must
not be disposed of on the ground or in nature; it should
always be disposed of at a workshop or appropriate
disposal location.

Avoid skin contact; wash with soap and water in case of
spills.

Open the engine cover.

• Turn the old oil filter anti-clockwise to remove. If
necessary, use a filter remover.

• Lightly lubricate the rubber seal on the new oil filter using
new oil.

• Fit the oil filter by turning clockwise. Turn by hand until the
rubber seal is seated. Now tighten a further half turn.

• Start the engine and let it idle for about 3 minutes. Now
stop it and check for signs of leakage.

• Check the engine oil level and top up if necessary.

IMPORTANT!

Used engine oil and transmission oil is hazardous to health
and must not be disposed of in the ground or out of doors.

Replaced filters must be handed in to the workshop or other
allotted place for disposal.

Avoid skin contact; wash with soap and water in case of
spills.

34 – English

Troubleshooting schedule

Hydraulic oil filter change

• Turn the old oil filter anti-clockwise to remove. If
necessary, use a filter remover.

• Lightly lubricate the rubber seal on the new oil filter using
new oil.

• Tighten the filter by hand until you feel it make contact,
then tighten a further 3/4 turn. Remove the transmission
cover and fill the transmission’s oil tank, about 0.3 l oil. Be
observant when running the engine as described below
and fill so that the tank is not emptied.

Run the engine warm, manipulate the servo steering, and
then check that there are no leaks around the oil filter seal.

• Check the oil level in the transmission, top up if necessary.
The oil filter holds 0.3 litres of oil.

• Replace the transmission cover.

Lubricate the parking brake wire

• Remove the frame plate by loosening the two screws.

Checking the transmission oil level

• Remove the transmission cover. Undo the two screws
(one on each side) and lift off the transmission cover.

• Check that there is oil in the transmission’s oil tank.

• Fill if necessary with oil Synthetic 10W/50

• Replace the transmission cover.

The oil and filter should be changed by an authorised service
representative, as described in the Workshop Manual. Work
on the system entails particular demands on cleanliness and
the system must be vented before the machine is used.

• Remove the left-hand wing cover.

• Lubricate both ends of the cable.

• Remove the cable´s rubber casing when lubricating.

• Lubricate the cable with oil, press the parking brake pedal
a few times and lubricate again.

• Refit the frame plate and wing cover.

English – 35

Troubleshooting schedule

Problem Cause

There is no fuel in the fuel tank

Faulty spark plug.

Engine does not start

Starter motor does not turn over the
engine

Engine does not run smoothly

Engine seems to have no power

Engine overheats

Battery does not charge

Machine vibrates

Uneven mowing

Defective ignition cable.

Dirt in the carburettor or fuel line

Starter motor does not turn over the engine

Defect safety switch

Battery flat

Bad contact between the cable and battery

Lift lever for cutting unit in wrong position

Main fuse blown.

Ignition lock faulty

Brake not activated.

Faulty starter motor

Faulty spark plug.

Carburettor incorrectly set

Air filter clogged

Fuel tank vent blocked

Ignition key defective

Dirt in the carburettor or fuel line

Choking or incorrectly adjusted throttle cable

Air filter clogged

Faulty spark plug.

Dirt in the carburettor or fuel line

Carburettor incorrectly set

Choking or incorrectly adjusted throttle cable

Engine overloaded

Faulty spark plug.

Air intake or cooling flanges blocked

Fan damaged

Too little or no oil in engine

Ignition defective

One or more battery cells faulty

Poor contact on the battery terminal cable connectors

Blades are loose

Engine is loose

One or more blades unbalanced, caused by damage or poor balancing after
sharpening

Blades blunt

Long or wet grass

Cutting unit skew

Grass blockage under hood

Different tyre pressures on right and left sides

Over-speeding

Engine speed too low

Drive belt slipping

36 – English

ELECTRICAL AND HYDRAULIC SYSTEMS

Electrical system

Numbers correspond to:

1 Microswitch, hydrostatic transmission

2 Microswitch, cutting unit

3 Microswitch, seat

4 Ignition lock

5 Counter

6 Start relay

7 Engine connectors

8 Main fuse 15 A

9 Fuse 7.5 A

10 Switch for the power outlet

11 Power outlet

12 Switch for the lights

13 Lights

English – 37

ELECTRICAL AND HYDRAULIC SYSTEMS

Hydraulic System

Keep the hydraulic system clean. Bear in mind that:

• Thoroughly clean before the top-up cap is opened or any connector loosened.

• Use clean containers when topping up the oil.

• Only use pure oil that has been stored in a sealed container.

• Do not reuse drained oil.

• Change the oil and filter according to the intervals specified in Maintenance Schedule.

In order for a hydraulic system to function without problem, it must be free from foreign objects. When used, the system produces
particles, which can cause both wear and abnormal function. In order to remove these particles, the system contains filters. The
filters are sized so as to capture the produced particles, but if contaminants are introduced from outside the system, the filters can
quickly become clogged and fail to function as intended. If there are contaminants in the system, further contamination will be
produced in a self-propagating cycle. The result will be operating disruptions and much work to clean the system.

38 – English

Storage

Winter storage

At the end of the season, or if the machine is going to stand
idle for more than 30 days, it should immediately be made
ready for storage. Fuel which is left to stand for long periods
(30 days or more) can leave tacky deposits which can block
the carburettor and interfere with the engine.

Fuel stabiliser is an acceptable alternative to avoid tacky
deposits during storage. If alkylate petrol (Aspen) is used
stabiliser is not necessary since this fuel is stable. However,
one should avoid changing from standard to alkylate petrol
since sensitive rubber parts can harden. Add stabiliser to the
fuel in the tank or the storage container. Always use the
mixing ratios indicated by the manufacturer. Run the engine
for at least 10 minutes after adding the stabiliser so that it will
reach the carburettor. Do not empty the fuel tank and
carburettor if stabiliser has been added.

WARNING! Never store a machine with fuel
in the tank indoors or in poorly ventilated

!

spaces where fuel vapour can come in
contact with open flames, sparks, or a pilot
light such as in a boiler, hot water tank,
clothes drier, etc. Exercise caution when
handling fuel. It is highly inflammable, and
careless use can cause serious injury and
damage to property. Drain off the fuel in an
approved container outdoors and well clear
of naked flames. Never use petrol for
cleaning purposes. Use degreasing agents
and hot water instead.

Guard

There is a cover to protect your machine during storage or
transport. Contact your dealer for a demonstration

Service

Low season is the most suitable time to perform a service or
overhaul of the machine in order to ensure high function
safety during high season.

When ordering spare parts state your machine’s purchase
year, model, type, and serial number.

Always use genuine parts.

An annual check-up by an authorised servicing dealer is a
good way to ensure that your ride-on mower performs at its
best the following season.

To prepare the machine for storage follow these instructions:

1 Carefully clean the machine, especially under the cutting

unit. Touch-up paint damage to avoid rust.

2 Inspect the machine for worn or damaged parts and

tighten loose screws and nuts.

3 Change the engine oil, and take care of the waste oil.

4 Empty the fuel tank. Start the engine and run it until the

carburettor is emptied of fuel.

5 Remove the plugs and pour about a tablespoon of engine

oil into each cylinder. Pull round the engine to distribute
the oil and screw the plugs back on.

6 Grease all grease nipples, joints and axles.

7 Remove the battery. Clean it, charge it, and store it in a

cool place.

8 Store the machine in a clean and dry place and cover it

over for extra protection.

English – 39

Technical data

R 422 Ts AWD

Dimensions

Length without cutting unit, mm/ft 2070/6.79

Width without cutting unit, mm/ft 900/2,89

Height, mm/ft 1160/3,80

Unladen weight excluding cutting unit, kg/lb 327/721

Wheel base, mm/ft 1000/3,29

Track width, front, mm/ft 713 / 2,3

Track width, rear, mm/ft 710 / 2,3

Tyre dimensions 18 x 7.5 x 8

Air pressure, rear - front, kPa / bar / PSI 60 (0,6/8,5)

Max. gradient 10

Engine

Brand / Model Briggs & Stratton / 7220

Nominal engine output, kW (see note 1) 12,5

Displacement, cm3/cu.in 656

Fuel, minimum octane grade lead-free 87 (max. methanol 5%, max. ethanol 10%, max. MTBE 15%)

Tank volume, litres/USqt 17/18

Oil, class SC-SH SAE 30 or SAE 10W/30, SAE 10W/40

Oil volume incl. filter 1,9/2.0

Oil volume excl. filter, litres/USqt 1,7/1,8

Starting Electric starter

Max.motor speed, r/min 3000 ± 100

Electrical system

Type 12 V, negative earthed

Battery 12 V, 24 Ah

Spark plug EMS PLATINUM

Electrode gap, mm/inch 0,75/0,030

Main fuse Flat pin, 15 A.

Bulbs, halogen 2x12V 20W

Transmission

Front axle make KTM 10 SA

Rear axle make Tuff Torq K 664

Oil, class SF-CC SAE 10W/50 Synthetic

Oil volume, total, litres 3,2

Cutting unit

Type

Combi 112

Combi 122

Note 1: The power rating of the engine indicated is the average net output (at specified rpm) of a typical production engine for the
engine model measured to SAE standard J1349/ISO1585. Mass production engines may differ from this value. Actual power
output for the engine installed on the final machine will depend on the operating speed, environmental conditions and other values.

Technical data concerning the cutting unit

Cutting unit Combi 112 Combi 122

Cutting width, mm/inch 1120 / 44.1 1220 / 48

Cutting heights, 7 positions, mm/inch 25-80/0.98-3.15 25-80/0.98-3.15

Blade length, mm/inch 420 / 16,5 454 / 17.9

Width, mm 1220 / 48 1330 / 52,4

Weight, kg/lb 56 / 123.5 64 / 141

Cutter

Part number 5041878-10 5354294-10

40 – English

Technical data

Technical specifications for sound and vibration levels

Combi 112 Combi 122

Noise emissions (see note 2)

Sound power level, measured dB (A) 98 102

Sound power level, guaranteed dB(A) 99 103

Sound levels (see note 3)

Sound pressure level at the operators ear, dB(A) 83 88

Vibration levels (see note 4)

Vibration level on the steering wheel, m/s

Vibration level in the seat, m/s

Note 2: Noise emissions in the environment measured as sound power (LWA) in conformity with EC directive 2000/14/EC.

Note 3: Noise pressure level according to EN 836. Reported data for noise pressure level has a typical statistical dispersion
(standard deviation) of 1.2 dB(A).

Note 4: Vibration level according to EN 836. Reported data for vibration level has a typical statistical dispersion (standard deviation)
of 0.2 m/s2 (steering wheel) and 0.8 m/s2 (seat).

IMPORTANT INFORMATION When the service life of this product has been served and it is no longer used it should be returned
to the dealer or to an applicable station for recycling.

2

2

3.5 3.5

0,7 0,7

IMPORTANT INFORMATION We reserve the right to change specifications and designs without prior notice so as to implement
improvements.

Note that no legal claims are valid on the basis of information in this manual.

Use only genuine parts for repairs. The warranty is not valid if non genuine parts are used.

EC Declaration of Conformity (Applies to Europe only)

Husqvarna AB, SE-561 82 Huskvarna, Sweden, tel.: [phone], hereby declares that Husqvarna R 422 Ts AWD from 2014’s
serial numbers and onwards (the year is clearly stated in plain text on the rating plate with subsequent serial number), complies
with the requirements of the COUNCIL’S DIRECTIVE:

of May 17, 2006 ”relating to machinery” 2006/42/EC.

of December 15, 2004 ”relating to electromagnetic compatibility” 2004/108/EC.

of May 8, 2000 ”relating to the noise emissions in the environment” 2000/14/EC.

The following harmonised standards have been applied: EN ISO 12100-2, ISO 5395

Notified body: 0404, SMP Svensk Maskinprovning AB, Box 7035, SE-750 07 Uppsala, has issued reports regarding the
assessment of conformity according to annex VI of the COUNCIL’S DIRECTIVE of May 8, 2000 ”relating to the noise emissions in
the environment” 2000/14/EC.

The certificates have the numbers: 01/901/137, 01/901/138

Huskvarna 19 may 2014

Claes Losdal, Development Manager/Garden Products

(Authorized representative for Husqvarna AB and responsible for technical documentation.)

English – 41

Original instructions

1156988-26

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2014-06-18