Stihl RT 5097.0, RT 5112.0, RT 6112.0, RT 6127.0 Instruction Manual [el, en, es, pt]
STIHL RT 5097, RT 5097 C, RT 5097 Z
RT 5112 Z, RT 6112 C, RT 6112 ZL, RT 6127 ZL
EN
Instruction manual
ES
Manual de instrucciones
PT
Manual de utilização
EL
Οδηγίες χρήσης
RT 5097.0 RT 5097.0 C RT 5097.0 Z RT 5112.0 Z RT 6112.0 C RT 6112.0 ZL RT 6127.0 ZL
A
0478 192 9809 A. A21. Eco. DS-2021-01 © 2021 STIHL Tirol GmbH
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0478 192 9809 A
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0478 192 9809 A
Dear Customer,
Thank you for choosing STIHL. We
develop and manufacture our quality
products to meet our customers'
requirements. The products are designed
for reliability even under extreme
conditions.
STIHL also stands for premium service
quality. Our specialist dealers guarantee
competent advice and instruction as well
as comprehensive service support.
We thank you for your confidence in us
and hope you will enjoy working with your
STIHL product.
Dr. Nikolas Stihl
IMPORTANT: READ BEFORE USE AND
KEEP IN A SAFE PLACE.
1. Table of contents
Notes on the instruction manual 4
General 4
Instructions for reading the
instruction manual 4
Machine overview 6
Ride-on mower 6
Dashboard 8
For your safety 9
General 9
Training – learning to use the
machine 10
Transporting the ride-on mower 10
Refilling the tank – handling petrol 10
Clothing and equipment 11
Before operation 11
Working with your machine 12
Maintenance and repairs 15
Storage for prolonged periods
without operation 16
Disposal 16
Description of symbols 17
Standard equipment 18
Operations prior to initial use 19
Controls 19
Ignition lock with light switch 19
Throttle lever with choke function
(RT 5097, RT 5097 C, RT 6112 C) 19
Throttle lever (RT 5097 Z,
RT 5112 Z, RT 6112 ZL,
RT 6127 ZL) 20
Choke knob (RT 5097 Z,
RT 5112 Z, RT 6112 ZL,
RT 6127 ZL) 20
Mowing deck switch (RT 5097,
RT 5097 C, RT 5097 Z, RT 5112 Z) 21
Mowing deck button (RT 6112 C,
RT 6112 ZL, RT 6127 ZL) 21
Cruise control button (RT 6112 ZL,
RT 6127 ZL) 22
Reverse mowing safety switch 22
Driving direction selector lever 23
Steering wheel 23
Driver's seat adjustment 23
Drive pedal 23
Brake pedal 24
Parking brake 24
Cutting height adjustment lever 25
Grass catcher box emptying lever 25
Grass catcher box release lever 26
Gearbox freewheel lever 26
Level sensor (grass catcher box) 27
Electronics 27
Self-diagnosis when starting 27
Ride-on mower faults during
operation 28
Electronics faults 28
Display on the RM 6112 C,
RM 6112 ZL, RM 6127 ZL 28
5-digit segmental display 29
Set button 29
Mode button 29
Display of faults 29
Display of operating information 29
Display of active functions 30
Notes on working with the
machine 30
Safety devices 31
Operating the machine 32
Filling the fuel tank 32
Starting the engine 33
Stopping the engine 33
Driving 33
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0478 192 9809 A - EN
Printed on chlorine-free bleached paper. Paper is recyclable. Cover is halogen free.
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Braking 34
Adjusting the cutting height 34
Mowing 34
Programming automatic
disengagement of the mowing
deck 35
Emptying the grass catcher box 36
Removing and attaching the grass
catcher box 36
Pulling loads 37
Operating on slopes 37
Mowing deck 38
Removing the mowing deck 38
Installing the mowing deck 40
Maintenance 43
Maintenance schedule 43
Cleaning the machine 44
Opening the engine hood 44
Closing the engine hood 45
Removing the discharge chute 45
Installing the discharge chute 45
Fuel cock 45
Checking the engine oil filling level 46
Changing the engine oil 46
Topping up engine oil 47
Checking the safety devices 47
Cleaning the level sensor (grass
catcher box) 47
Mowing blade maintenance 48
Checking the installation position of
the mowing deck 51
Changing the wheels 51
Tyre pressure 52
Lubrication 53
Opening and closing the battery
compartment 53
Removing and installing the battery 54
Fuses 55
Charging the battery using the
charger plug 56
Replacing headlamp bulbs 56
Combustion engine 57
Gearbox 57
Storage 57
Extended periods of inoperation
(e.g. winter break) 57
Following storage for extended
periods (e.g. over winter) 57
Transport 58
Standard spare parts 58
Accessories 58
Environmental protection 58
Minimising wear and preventing
damage 59
EU - Declaration of conformity 59
Lawn mower with driver's seat and
combustion engine (STIHL RT) 59
Technical specifications 60
Dimensions 64
REACH 64
Troubleshooting 65
Service schedule 67
Handover confirmation 67
Service confirmation 68
2. Notes on the instruction manual
2.1 General
This instruction manual constitutes
original manufacturer’s instructions in
the sense of EC Directive 2006/42/EC.
STIHL is continually striving to further
develop its range of products; we therefore
reserve the right to make alterations to the
form, technical specifications and
equipment level of our standard
equipment.
For this reason, the information and
illustrations in this manual are subject to
alterations.
This instruction manual may describe
models that are not available in all
countries.
This instruction manual is protected by
copyright. All rights reserved, especially
the right of reproduction, translation and
processing using electronic systems.
2.2 Instructions for reading the instruction manual
Illustrations and texts describe specific
operating steps.
All symbols which are affixed to the
machine are explained in this instruction
manual.
Viewing direction:
Viewing direction when "left" and "right"
are used in the instruction manual:
the user is standing behind the machine
and is looking forwards in the direction of
travel.
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0478 192 9809 A - EN
Section reference:
References to relevant sections and
subsections for further descriptions are
made using arrows. The following example
shows a reference to a section: (Ö 4.)
Designation of text passages:
The instructions described can be
identified as in the following examples.
Operating steps which require intervention
on the part of the user:
● Release bolt (1) using a screwdriver,
operate lever (2)...
General lists:
– Use of the product for sporting or
competitive events
Texts with added significance:
Text passages with added significance are
identified using the symbols described
below in order to especially emphasise
them in the instruction manual:
Danger
Risk of accident and severe injury
to persons. A certain type of
behaviour is necessary or must be
avoided.
Warning
Risk of injury to persons. A certain
type of behaviour prevents possible
or probable injuries.
Caution
Minor injuries or material damage
can be prevented by a certain type
of behaviour.
Illustrations with text passages:
Operating steps relating directly to the
illustration can be found immediately after
the illustration, with a corresponding
reference to the item numbers.
Example:
Insert ignition key (1) in ignition lock (2).
Texts relating to illustrations:
Illustrations relating to use of the machine
can be found in the front of this instruction
manual.
The camera symbol serves to link
the figures on the illustration pages
with the corresponding text
passages in the instruction manual.
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Note
Information for better use of the
machine and in order to avoid
possible operating errors.
0478 192 9809 A - EN
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3. Machine overview
3.1 Ride-on mower
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0478 192 9809 A - EN
1 Bumper
2 Headlamp
3 Engine hood
4 Tank cap
5 Steering wheel
6 Driver's seat
7 Grass catcher box handle with grass
catcher box release lever
8 Grass catcher box emptying lever
9 Grass catcher box
10 Gearbox freewheel lever
11 Cutting height adjustment lever
12 Rear wheel
13 Brake pedal
14 Drive pedal (driving speed)
15 Mowing deck
16 Gauge wheels
17 Front wheel
18 Trailer hitch
19 Level sensor (grass catcher box)
20 Discharge chute
21 Driver's seat adjustment lever
22 Battery compartment
23 Beverage compartment
24 Reverse mowing safety switch
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0478 192 9809 A - EN
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3.2 Dashboard
1 Driving direction selector lever
(forwards/reverse)
(Ö 8.9)
2 Throttle lever with integrated
choke function
(RT 5097, RT 5097 C, RT 6112 C)
(Ö 8.2)
2 Throttle lever
(RT 5097 Z, RT 5112 Z,
RT 6112 ZL, RT 6127 ZL)
(Ö 8.3)
3 Choke knob
(RT 5097 Z, RT 5112 Z,
RT 6112 ZL, RT 6127 ZL)
(Ö 8.4)
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4 Mowing deck switch
(RT 5097, RT 5097 C, RT 5097 Z,
RT 5112 Z)
(Ö 8.5)
5 Ignition lock with light switch
(Ö 8.1)
6 Mowing deck button
(RT 6112 C, RT 6112 ZL,
RT 6127 ZL)
(Ö 8.6)
7 Cruise control button
(RT 6112 ZL, RT 6127 ZL)
(Ö 8.7)
8 Display with control buttons
(RT 6112 C, RT 6112 ZL,
RT 6127 ZL)
(Ö 10.)
9 Parking brake lever
(Ö 8.14)
0478 192 9809 A - EN
4. For your safety
4.1 General
These safety regulations must
be observed when working with
the machine.
Read the entire instruction
manual before using the
machine for the first time. Keep
the instruction manual in a safe
place for future reference.
Observe the operating and maintenance
instructions contained in the separate
engine instruction manual.
These safety precautions are essential for
your safety, however the list is not
exhaustive. Always use the machine in a
reasonable and responsible manner and
be aware that the user is responsible for
accidents involving third parties or their
property.
Risk of death from suffocation!
Packaging material is not a toy danger of suffocation! Keep
packaging material away from
children.
Only give or lend the machine, including
any accessories, to persons who are
familiar with this model and how to operate
it. The instruction manual forms part of the
machine and must always be provided to
persons borrowing it.
Make sure that the user is physically,
sensorily and mentally capable of
operating the machine and working with it.
If the user is physically, sensorily or
mentally impaired, the machine must only
be used under supervision or following
instruction by a responsible person.
Make sure that the user is of legal age or
being trained under supervision in a
profession in accordance with national
regulations.
The machine must only be operated by
persons who are well rested and in good
physical and mental condition. If your
health is impaired, you should consult your
doctor to determine whether working with
the machine is possible. The machine
should not be operated after the
consumption of alcohol, drugs or
medications which impair reactions.
Caution – risk of accident!
The ride-on mower is only intended for
mowing lawns; its use for other purposes
is not permitted.
The machine must only be equipped with
original STIHL accessories. These enable
further applications. Information is
available from your STIHL specialist
dealer.
Due to the physical danger to the user or
other persons, the machine must not be
used, for example, for the following
applications (incomplete list):
– for cutting creepers,
– for shredding or chopping tree or hedge
cuttings,
– for clearing paths (vacuuming,
blowing),
– for snow clearing using the mowing
deck,
– for the care of lawn roofs,
– for levelling earth mounds, e.g. mole
hills.
– for transporting clippings, except in the
grass catcher box intended for this
purpose.
The machine is not approved for use on
public roads.
The carrying of persons (especially
children) and animals is not permitted.
Never climb onto the mowing deck, and in
particular the gauge wheels.
Objects must not be transported on the
machine, but only with the aid of a trailer
approved by STIHL (accessory). The
weight limits must be observed. (Ö 13.11)
Particular care is required during use in
public green spaces, parks, sports fields,
along roads and in agricultural and forestry
businesses.
The machine must not be used for sporting
or competitive events.
For safety reasons, any modification to the
machine, except the proper installation of
accessories or attachments approved by
STIHL is forbidden and results in voiding of
the warranty cover. Information regarding
approved accessories and attachments
can be obtained from your STIHL
specialist dealer.
In particular, any tampering with the
machine which increases the power
output, engine speed or driving speed is
forbidden.
The machine is equipped with electronics
which must not be modified or removed.
For safety reasons, the machine software
must never be modified or tampered with.
Caution! Danger to health due
to vibrations. Excessive
exposure to vibrations can
result in damage to the
cardiovascular or nervous system,
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0478 192 9809 A - EN
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particularly in persons with cardiovascular
problems. Please consult a physician if
you experience symptoms that may have
been caused by vibrational loads.
Symptoms of this kind principally affect the
fingers, hands or wrists and include
(incomplete list):
– numbness,
– pain,
– muscular weakness,
– skin discolouration,
– unpleasant tingling sensation.
Hold the handlebar tightly, but not tensed,
with both hands in the designated
locations during operation.
Plan your working times so that more
severe physical strains over a longer
period are avoided.
4.2 Training – learning to use the machine
Make sure that you are familiar with the
controls and operation of the machine. In
particular, the user must know how the
work tools and engine can be stopped
quickly.
The machine must only be used by
persons who have read the instruction
manual and are familiar with operation of
the machine. The user should seek expert
and practical instruction prior to initial
operation. The user must receive
instruction on safe use of the machine
from the vendor or another expert.
During this instruction, the user should be
made aware
– that the utmost care and concentration
are required for working with the
machine.
– that a ride-on mower which is sliding
down a slope cannot be brought under
control by applying the brake.
The main causes for the loss of control
over the ride-on mower include:
– inadequate adhesion of the wheels,
– driving too fast,
– inappropriate braking,
– incorrect use (sport events, etc.),
– inadequate knowledge of the effects
associated with ground conditions,
especially on slopes (see section "For
your safety", "Working on slopes"),
– incorrect attachment of loads and poor
load distribution.
Residual risks persist even if you operate
the machine according to the instructions.
4.3 Transporting the ride-on mower
On account of its own weight, the ride-on
mower can cause severe crush injuries.
Particular care must be taken when
loading or unloading the ride-on mower
onto/from a vehicle or trailer for transport
purposes.
This ride-on mower must not be towed. For
transporting on public roads, a suitable
vehicle or a suitable trailer must be used.
During transport, secure the ride-on
mower to a load floor as described in this
instruction manual. Always engage the
parking brake. (Ö 16.)
Prior to transporting or storage, disengage
the drive to the mowing blade or
attachments.
When transporting the machine, always
observe regional legislation, especially
regarding load security and the transport
of objects on load floors.
Allow the machine, in particular the engine
and muffler, to cool down completely after
loading and before further transport. The
load floor and the area around the muffler
and engine must be kept free of
combustible materials such as straw,
leaves or dry grass residues.
4.4 Refilling the tank – handling petrol
Danger to life!
Petrol is poisonous and extremely
inflammable.
Petrol must only be stored in appropriate,
tested containers (canisters). Always
screw on the fuel tank and canister caps
properly and tightly. Defective caps must
be replaced for safety reasons.
Keep petrol away from sparks,
naked flames, pilot lights, heat
sources, and other ignition
sources. Do not smoke!
Refill the tank out-of-doors and do not
smoke during refilling.
Before refilling the tank, stop the engine
and allow it to cool.
Refilling with petrol must be performed
before the engine is started. When the
engine is running or is hot, the tank cap
must not be removed and the tank must
not be refilled with petrol.
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0478 192 9809 A - EN
Open the fuel tank cap slowly and
carefully. Wait for pressure compensation
and only then remove the tank cap
completely.
Use a suitable funnel or filling pipe for
refilling the tank, so that no fuel can spill
onto the engine and housing or the lawn.
Do not overfill the fuel tank!
To give the fuel room to expand,
never fill the fuel tank past the
lower edge of the filler neck.
Observe the additional
instructions in the engine
instruction manual.
If petrol is spilled, the engine
must only be started after the petrolcontaminated area has been cleaned. All
attempts at starting must be avoided until
the petrol fumes have dispersed (wipe
dry).
Any spilt fuel must be wiped up
immediately.
Clothing must be changed if it comes into
contact with petrol.
Following each refilling of the tank, the fuel
tank cap must be properly screwed on and
tightened. The machine must not be
operated without the original tank cap.
For safety reasons, the fuel line, fuel tank,
tank cap and connections must be
checked regularly for damage, ageing
(brittleness), firm seating and leaks.
Replace if necessary (consult a specialist
dealer; STIHL recommends STIHL
specialist dealers).
If it is necessary to drain the tank, this must
be done out of doors.
Never use beverage bottles or similar for
disposal or storage of fuels and lubricants.
Persons, particularly children, could be
tempted to drink out of them.
Never store the machine with petrol in the
tank inside a building. The resulting petrol
fumes could come into contact with naked
flames or sparks and could be ignited.
Do not leave the machine and the fuel tank
close to heating systems, radiant heaters,
welding equipment and other sources of
heat. Explosive hazard!
4.5 Clothing and equipment
Always wear sturdy footwear
with high-grip soles when
working. Never work barefoot
or, for example, in sandals.
Always wear long trousers and tight-fitting
clothing when operating the machine.
Never wear loose clothes which may
become caught on moving parts (control
levers) – do not wear jewellery, ties or
scarves.
Also always wear sturdy gloves
and tie up and secure long hair
(headscarf, cap, etc.) when
performing maintenance and
cleaning work or when transporting the
machine.
Wear suitable safety glasses
when sharpening the mowing
blade.
Noise is produced when
working. Noise can damage the
hearing.
Wear hearing protection.
4.6 Before operation
Make sure that only persons who are
familiar with the instruction manual are
permitted to use the machine.
Check the fuel system (particularly visible
parts such as e.g. tank, tank cap, hose
connections) before operating the
machine. In the event of any leaks or
damage, do not start the engine – fire
hazard!
Have the machine repaired by a specialist
dealer prior to operation.
Observe the local regulations regarding
permitted operating times for gardening
power tools with combustion engines or
electric motors.
Carefully inspect the complete area on
which the machine is to be used and
remove any stones, sticks, wires, bones
and other foreign objects which could be
thrown up by the machine. Obstacles (e.g.
tree stumps, roots) can be easily
overlooked in long grass.
For this reason, mark all foreign objects
(obstacles) which are hidden in the lawn
and cannot be removed before
commencing work with the machine.
All faulty, worn or damaged parts must be
replaced before using the machine.
Replace any illegible or damaged danger
signs and warnings on the machine. Your
STIHL specialist has a supply of
replacement stickers and all the other
spare parts.
Never use the machine with damaged
safety devices or with safety devices
removed.
The braking function must be checked
before each use. (Ö 13.5)
Before each use, check whether:
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0478 192 9809 A - EN
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– the cutting tool and the entire cutting
unit (mowing blade, blade clutch, blade
brake, retaining pin, mowing deck
housing) are in good condition.
Particularly check for secure fastening,
damage and wear.
– the tank cap is securely attached.
– the tank and fuel-carrying parts as well
as the tank cap are in good condition.
– the safety devices are in good condition
and function correctly.
– the tyres (inflation pressure, damage,
wear) and frame are in good condition.
Check that all screw connections are
securely fastened. In particular, all
maintenance operations listed in the
maintenance schedule under the
heading "Before each use" must be
carried out. (Ö 15.1)
If necessary, consult a specialist dealer.
STIHL recommends STIHL specialist
dealers.
4.7 Working with your machine
Never work in the vicinity of
other persons, particularly
children, or animals. Ensure
that the grass is never
discharged in the direction of other
persons.
Do not operate the machine in the rain or
during thunder storms, particularly when
there is a risk of lightning strike.
Exhaust gases:
Danger to life through poisoning!
In the case of nausea, headache,
impaired vision (e.g. decreasing
field of view) hearing disorder,
dizziness, decreasing power of
concentration, stop working
immediately. These symptoms may
be caused by excessively high
exhaust gas concentrations.
The machine generates
poisonous exhaust gases when
the engine is running. The
gases contain poisonous
carbon monoxide, a colourless and
odourless gas, as well as other pollutants.
The engine must never be operated in
closed or poorly ventilated spaces.
Starting:
The machine must only be started from the
driver's seat.
Start the machine on level ground, not on
a slope.
The engine may only be started in a well
ventilated working area, sufficient
ventilation must be ensured, particularly in
garages.
Before starting the engine, disengage the
cutting tool, attachments and drive and
press down the brake pedal fully.
When starting, it must be ensured that
there is sufficient clearance between the
feet and the cutting tool.
Never start the engine by short-circuiting
the starter terminal. If the normal starter
circuit is bypassed, the ride-on mower may
suddenly be set in motion.
Never start the engine if the smell of petrol
can be detected – Explosive hazard!
Working:
Warning – Risk of injury!
Observe the working
area of the mowing
blade. Never put hands
or feet on or underneath
rotating parts. Never touch the
rotating mowing blade. Always
keep away from the discharge
opening. An adequate safety
distance must always be
maintained.
Only work during the day or with good
artificial light.
When driving off the lawn or when not
mowing, the mowing blades must be
disengaged and the mowing deck must be
set to the highest cutting position.
Objects hidden in the turf (lawn sprinkler
systems, posts, water valves, foundations,
electrical wires, etc.) must be avoided.
Never run over any such foreign objects.
Always hold the steering wheel firmly with
both hands when driving.
Particular care must be taken when driving
on lawns and other uneven surfaces, as
the steering wheel can be made to turn
due to holes, mounds, impacts, etc.
Risk of injury to hands and fingers!
If, during operation, a defect in the tank,
tank cap or in the fuel-carrying
components (fuel lines) is detected, the
engine must be stopped immediately. A
specialist dealer must then be contacted.
STIHL recommends STIHL specialist
dealers.
Beware of depressions (holes) in the
terrain and other invisible points of danger.
Obstacles can be easily overlooked in long
grass.
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0478 192 9809 A - EN
Always drive at a reasonable speed.
Use the machine with great care when
working near slopes, terraces, ditches and
embankments. In particular, ensure that
you maintain sufficient distance to such
danger areas.
Particular care must be taken at points of
poor visibility, bushes, trees and other
obstacles, behind which persons,
especially children, or animals may be
hidden.
Bring the ride-on mower to a standstill
immediately and stop the mowing blade if
someone moves into the area to be mown.
Always monitor the area in front of the
vehicle. Beware of obstacles, in order to
be able to evade them in time.
Before reversing, always check the area
behind the ride-on mower and, if present,
disengage the attachment. Never mow in
reverse, if it is not absolutely necessary.
When mowing in reverse, take particular
care and before beginning to mow,
thoroughly check the entire area behind
the ride-on mower.
When working together in a group, always
inform the others in advance of what you
intend to do. Maintain a safety distance!
The vehicle speed must be reduced before
each change of direction, so that the user
retains control of the machine at all times
and also that the ride-on mower cannot tip
over.
When operating near to roads and when
crossing roads, other road users must be
taken into account.
Take particular care when mowing near
roads, cycle paths and footpaths. Objects
which are thrown up by the mower can
cause severe injury and damage.
Only empty the grass catcher box from the
driver's seat.
Before emptying the grass catcher box,
always disengage the mowing blades and
wait until they have come to a standstill.
When operating the ride-on mower with
attachments, always follow the
instructions and safety regulations
supplied with the attachments.
Switch off the drive, stop the engine and
wait until the mowing blades have come to
a complete standstill, engage the parking
brake and remove the ignition key:
– when abandoning or when transporting
the machine.
– before remedying blockages, including
those in the discharge chute.
– before checking, cleaning or working on
the ride-on mower.
– if the mowing blades have hit an
obstacle.
Inspect the machine and the cutting tool
for damage and have any necessary
repairs performed before re-starting.
Additionally check the installation
position of the mowing blades on the
models RT 5112 Z, RT 6112 C,
RT 6112 ZL, RT 6127 ZL – the mowing
deck must not be engaged if the angle
of the blades relative to each other is
not as specified in the section "Mowing
blade maintenance". (Ö 15.13)
– if the machine begins to vibrate
excessively. It must be checked
immediately.
Stop the engine and wait until the mowing
blades have come to a complete standstill:
– Before filling with fuel.
– Before removing the grass catcher box.
– Before opening the engine hood.
Driving with cruise control:
Activating cruise control in the wet or
under adverse ground conditions as well
as when pulling loads increases the
accident risk.
When cruise control is switched off, the
ride-on mower brakes abruptly.
Cruise control is an aid that provides
assistance when driving. The
responsibility for the driving speed and for
timely braking always lies with the user.
Cruise control does not react to obstacles
or to altered ground conditions. If an
obstacle cannot be avoided at the set
driving speed, cruise control must be
switched off.
Due to the increased risk of accident,
cruise control must not be used:
– In situations which do not permit driving
at constant speed (e.g. adverse ground
conditions due to wet conditions or on
slopes).
– On slippery surfaces. The wheels may
lose their grip and the vehicle can skid.
– If visibility is poor (e.g. due to fog, heavy
rain or at night).
Working on slopes:
Slopes are one of the major causes of
accidents in which control over the ride-on
mower is lost causing it to tip over, which
can result in severe or even fatal injuries.
There is no "safe" slope! Driving on grassy
slopes requires special concentration.
For safety reasons, the machine must not
be used on slopes with an inclination of
more than 10° (17.6 %). Risk of injury!
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0478 192 9809 A - EN
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A slope inclination of 10° corresponds to a
vertical height increase of 17.6 cm for a
100 cm horizontal distance.
In order to ensure an adequate oil supply
for the engine, the information in the
accompanying engine instruction manual
must be additionally observed when using
the machine on slopes.
If you cannot drive up the slope in reverse
or if you have doubts regarding safety, you
should not drive on the slope.
Starting off or stopping on a gradient must
be avoided.
Do not use the machine in places (slopes,
ditches, etc.) where the ride-on mower can
tip over or slide. The danger of tipping over
or sliding increases if the ground is soft or
damp.
Slopes must be driven on in a longitudinal
direction. Driving transversely increases
the danger of tipping over.
Do not change speed or direction abruptly
when driving on slopes. Work in this type
of situation requires calm, cautious and
even operation of the ride-on mower.
Changes of direction on slopes must be
avoided. Only turn on slopes if this is
unavoidable. If possible, drive slowly and
in a large curve in the down-slope
direction.
Do not mow wet grass, particularly on
slopes, as wheel grip is reduced on wet
grass. The ride-on mower could slide and
become uncontrollable for the user.
The gearbox must never be disengaged
via the gearbox freewheel when driving on
slopes.
Special care must be taken when
operating attachments on slopes (altered
weight distribution of the machine).
If the wheels should start to slip or if the
vehicle becomes stuck in the up-slope
direction when driving on an incline, the
mowing blades or the attachment must be
disengaged. Then leave the slope by
driving slowly downhill in a straight line.
Never try to stabilise the ride-on mower by
pressing on the ground with your foot.
The weight of the grass catcher box
increases the danger of the ride-on mower
tipping over, particularly when it is full.
Never empty or lift the grass catcher box
on an incline.
Pulling loads:
Particular care must be taken when pulling
loads, in order to prevent the risk of severe
or even fatal injuries due to the ride-on
mower tipping over.
Only use accessories approved by STIHL
for transporting objects. Transportation on
the ride-on mower, in or on the grass
catcher box is not permitted.
For pulling loads, use only the trailer hitch.
Loads must never be attached to the axle
housing or to another point above the
trailer hitch.
Please refer to the section "Pulling loads"
for information on pulled and coupling
loads. (Ö 13.11)
Exceeding the specified pulled load is
dangerous and may result in damage to
the machine (engine, gearbox, etc.).
When transporting on slopes, the loads
must be adapted so that safe handling of
the ride-on mower (e.g. braking, change of
direction, starting off) is ensured at all
times.
Check whether loads are properly and
securely fastened. Use lashing straps for
securing loads.
Ensure balanced load distribution.
Use suitable additional weights
(accessories) if this is described in the
instruction manual for the attachment.
Do not execute tight curves. Particular
care must be taken when reversing.
Do not change speed or direction abruptly.
Stopping and parking:
The ride-on mower must only be parked on
a level surface.
Make sure that the ride-on mower has
come to a complete standstill before you
dismount.
Beware of the cutting tool
running on for several seconds
before coming to a standstill.
Before leaving the driver’s seat,
disengage the mowing blades
or the drive to the attachments, lower the
mowing deck and all attachments, set all
control levers to the neutral position,
engage the parking brake, stop the engine
and remove the ignition key.
Keep the ignition key in a place where only
authorised persons can access it.
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0478 192 9809 A - EN
4.8 Maintenance and repairs
Before beginning cleaning,
adjustment, repair and
maintenance operations, park
the machine on firm, level ground, engage
the parking brake, stop the engine, allow it
to cool down and remove the ignition key.
Allow the machine to cool down before
working on or around the engine, exhaust
manifold or muffler; this also applies in
particular to all maintenance operations on
the mowing deck. Temperatures of 80 °C
and above can be reached. Danger of
burns:
Direct contact with engine oil can be
dangerous. Engine oil must not be spilled.
STIHL recommends leaving the task of
topping up engine oil or performing engine
oil changes to a STIHL specialist dealer.
Cleaning:
Following operation, the entire ride-on
mower and the attachments must be
cleaned. In particular, all grass residues
must be removed because the moisture
these contain leads to damage in the long
term.
STIHL does not recommend the use of
high-pressure cleaners. (Ö 15.2)
Remove the mowing deck for cleaning
operations. Never clean the mowing deck
using water under high pressure (e.g.
garden hose) or by engaging the mowing
deck in puddles of water.
Never drive close to an edge or a ditch for
the purpose of cleaning (e.g. the frame of)
the ride-on mower.
In order to prevent fire hazards, keep the
engine, cooling ribs, battery compartment,
area around the fuel tank and exhaust free
from grass, leaves or escaping oil (or
grease).
Always clean the grass catcher box.
Maintenance operations:
Only maintenance operations described in
this instruction manual may be carried out.
Have all other work performed by a
specialist dealer.
If you do not have the necessary expertise
or auxiliary equipment, please always
contact a specialist dealer.
STIHL recommends that you have
maintenance operations and repairs
performed exclusively by a STIHL
specialist dealer.
STIHL specialist dealers regularly attend
training courses and are provided with
technical information.
Only use tools, accessories or
attachments approved for this machine by
STIHL or technically identical parts.
Otherwise, there may be a risk of
accidents resulting in personal injury or
damage to the machine. If you have any
questions, please consult a specialist
dealer.
The characteristics of original STIHL tools,
accessories and spare parts are optimally
adapted to the machine and the user's
requirements. Genuine STIHL spare parts
can be recognised by the STIHL spare
parts number, by the STIHL lettering and,
if present, by the STIHL spare parts
symbol. On smaller parts, only the symbol
may be present.
The ride-on mower and all attachments
should be inspected once annually by a
specialist dealer. (Ö 15.1)
Always keep warning and information
stickers clean and readable. Damaged or
missing stickers must be replaced by new,
original plates from your STIHL specialist
dealer. If a component is replaced with a
new component, ensure that the new
component is provided with the same
stickers.
For safety reasons, fuel-carrying
components (fuel line, fuel cock, fuel tank,
tank cap, connections, etc.) must be
checked regularly for damage and leaks
and replaced by a technician if necessary
(STIHL recommends STIHL specialist
dealers).
Before starting work on or near electrical
components, the negative (–) cable must
be disconnected from the battery.
The machine is equipped with numerous
safety devices. These devices must not be
removed or modified (bypassed, etc.) and
must be checked at regular intervals.
Operations on the safety devices must
only be carried out by a technician. STIHL
recommends STIHL specialist dealers for
this purpose.
Be aware that moving one cutting tool
results in the turning of the other cutting
tools.
Ensure that all nuts, pins and screws,
especially the blade fastening screws, are
securely tightened, so that the machine is
in a safe operating condition.
For safety reasons, worn or damaged
parts must be replaced immediately.
Check the grass catcher unit (e.g. grass
catcher box, discharge chute) regularly for
wear, damage or loss of functionality.
Particular care is required when working
under the machine, due to the weight of
the ride-on mower. Consult your specialist
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0478 192 9809 A - EN
15
dealer for this purpose; STIHL
recommends STIHL specialist dealers.
They will have a workshop pit or a
hydraulic working platform.
Check the secure fastening of the front
and rear wheels.
Always maintain the ride-on mower and
the attachments in perfect operating
condition. All safety devices must be
present and be in perfect operating
condition.
Ensure that the tyres have the correct tyre
pressures. The tyre pressures specified in
the instruction manual must not be
exceeded.
Only perform work on the mowing blades
when wearing thick work gloves and
exercising extreme care.
Check the function of the brakes at
regular, short intervals and, if necessary,
have the required adjustments or
maintenance operations performed by a
technician. STIHL recommends STIHL
specialist dealers.
Electrical system and battery:
In order to prevent sparks due to short
circuiting, the negative (–) cable must
always be disconnected from the battery
first and reconnected last.
Never smoke when working on
the battery. Sparks, naked
flames and other heat sources
must be kept away from the
battery.
Particular care is necessary when using
battery jump leads. Observe the relevant
instructions in order to prevent damage to
the ride-on mower (in particular, actuate
the starter for a maximum of 10 seconds).
(Ö 13.2)
When charging the battery using another
charging system, observe the instructions
in section "Charging the battery".
(Ö 15.21)
Never open the battery and do not drop it.
Always charge the battery in an enclosed,
well-ventilated room which is dry and
weather-protected.
Do not short circuit the battery
connections.
Deformed or faulty (leaking) batteries must
not be used and must be replaced and
disposed of in an environmentally-friendly
manner. Observe country-specific
legislation.
Fluid may escape from faulty batteries.
Avoid contact! In the case of inadvertent
contact, rinse with water. Seek medical
attention if the fluid contacts the eyes.
Escaping battery fluid can cause skin
irritation and burns.
Visually inspect the battery connection
cables for damage at regular intervals.
Have damaged cables replaced by a
technician.
Never bypass the fuses. Never use a fuse
with a value that differs from the specified
rating (ampere).
4.9 Storage for prolonged periods without operation
Allow the engine to cool before storing the
machine in an enclosed space.
Store the ride-on mower with empty fuel
tank and the fuel reserve in a lockable and
well-ventilated room.
Never store the machine with petrol in the
fuel tank inside a building in which the
petrol fumes could come into contact with
naked flames or sparks.
If the tank has to be emptied
(e.g. immobilisation before the winter
break), the fuel tank must be emptied out
of doors only (empty the tank by running
the engine out of doors, for example).
Store the machine in good operational
condition.
The ignition key must always be removed
and kept in a safe place, to prevent
unauthorised or improper use by children
or other persons.
Thoroughly clean the ride-on mower
before storage (e.g. winter break). Dry
grass residues and leaves near to the
muffler may ignite. Danger of
combustion!
Allow the machine to cool down
completely before covering it.
Perform all the necessary maintenance
operations before storing the machine.
(Ö 15.1)
The battery cables must be disconnected if
the ride-on mower is immobilised for
longer periods. STIHL recommends
removing the battery and storing it in a dry
and locked place. (Ö 15.19)
Ensure that batteries are protected from
unauthorised use (e.g. by children).
4.10 Disposal
Waste products such as used engine oil or
fuel, used lubricants, filters, batteries and
similar wearing parts can be harmful to
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0478 192 9809 A - EN
people, animals and the environment, and
must consequently be disposed of
properly.
Consult your recycling centre or your
specialist dealer for information on the
proper disposal of waste products. STIHL
recommends STIHL specialist dealers.
Ensure that old machines are properly
disposed of. Render the machine
unusable prior to disposal. In order to
prevent accidents, ensure that you remove
the ignition key, the battery and the ignition
lead on the engine.
Risk of injury due to the mowing blade!
Always store an old ride-on mower in a
safe place prior to scrapping. Ensure that
the machine and particularly the mowing
blades are kept out of the reach of
children.
The battery must be disposed of
separately from the machine. Ensure that
batteries are disposed of safely and in an
environmentally friendly manner.
5. Description of symbols
Risk of injury:
Remove the ignition key before performing
any work on the cutting tool or
maintenance and cleaning work.
Caution:
Keep a safe distance.
Caution:
Beware of objects being thrown out when
the engine is running – work with grass
catcher box or deflector (special
accessory).
Caution:
Never reach into the working area of the
mowing blades when the engine is
running.
Risk of injury:
Do not stand on the mowing deck.
Danger of burns!
Do not touch hot surfaces. Engine
components, especially mufflers, can
become extremely hot.
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Caution:
Read and follow the instruction manual
and the safety instructions before initial
use.
0478 192 9809 A - EN
Risk of injury:
Do not drive or mow on slopes with an
inclination greater than 10° (17%).
Danger of tipping over!
Risk of injury:
Keep other persons out of the danger
area.
17
6. Standard equipment
Item Designation Qty.
A Basic unit 1
B Grass catcher box 1
C Ignition key 2
Instruction manual 1
Engine instruction manual 1
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0478 192 9809 A - EN
7. Operations prior to initial use
Warning!
Prior to all operations on the ride-on
mower, carefully read and observe
the section "For your safety". (Ö 4.)
● Check engine oil filling level. (Ö 15.8)
● Fill fuel tank. (Ö 13.1)
● Open fuel cock. (Ö 15.7)
● Optimise tyre pressure. (Ö 15.16)
8. Controls
8.1 Ignition lock with light switch
The ignition lock serves to start
and stop the engine and to switch
the headlamps on and off.
Avoid damage to the machine.
The ignition key can only be
inserted and removed in the
"engine off" position.
The ignition lock can only be
operated with the appropriate
ignition key – never use a
screwdriver or other such object.
Insert ignition key (1) in ignition lock (2).
The following four positions can be
selected by turning the ignition key:
Engine off:
The engine is switched off or will
be stopped. The lights are
switched off and the ignition key can be
removed.
Lights on (operation with
lights):
Running engine:
The lights are switched on and the engine
continues to run.
Engine off:
The lights are switched on.
Ignition on/engine running:
The ignition is switched on and
the lights are switched off.
Following starting, the ignition key returns
automatically to this position and the
engine continues to run.
Start engine:
When all safety-relevant points
for starting are fulfilled and the
ignition key is turned to this
position, the engine starts.
On releasing the ignition key, it returns
automatically to the "engine running"
position.
Note
When the engine is stopped, a
signal tone is activated after 20
seconds in the "lights on" and
"ignition on" positions. The acoustic
signal indicates that the battery is
being discharged. To deactivate the
signal tone, turn the ignition key to
the "engine off" position or start the
engine.
8.2 Throttle lever with choke function (RT 5097, RT 5097 C, RT 6112 C)
To start a cold engine, move the throttle
lever on the models RT 5097, RT 5097 C
and RT 6112 C to the choke position.
Do not use the choke when starting
a warm engine (throttle lever in
MAX position).
Deactivate the choke as soon as
the engine is running.
Never move the throttle lever to the
choke position when the engine is
running.
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0478 192 9809 A - EN
19
Choke position:
If the throttle lever (1) is pushed
downwards or upwards, the engine speed
changes and, if the mowing deck is
engaged, the speed of the mowing blades
is changed.
MAX position:
If the throttle lever (1) is moved forwards
towards the MAX marking, the engine
speed is increased.
MIN position:
If the throttle lever (1) is pushed back
towards the MIN marking, the engine
speed is reduced.
If the throttle lever (1) is pushed
downwards or upwards, the engine speed
changes and, if the mowing deck is
engaged, the speed of the mowing blades
is changed.
MAX position:
If the throttle lever (1) is moved forwards
towards the MAX marking, the engine
speed is increased.
MIN position:
If the throttle lever (1) is pushed back
towards the MIN marking, the engine
speed is reduced.
Push throttle lever (1) fully forwards into
the choke position (note detent).
Setting the engine speed:
Move the throttle lever to the MAX
position during mowing and to start
the engine.
8.3 Throttle lever (RT 5097 Z, RT 5112 Z, RT 6112 ZL, RT 6127 ZL)
Setting the engine speed:
Move the throttle lever to the MAX
position during mowing and to start
the engine. To start a cold engine,
also actuate the choke knob.
8.4 Choke knob (RT 5097 Z, RT 5112 Z, RT 6112 ZL, RT 6127 ZL)
The models RT 5097 Z, RT 5112 Z,
RT 6112 ZL, RT 6127 ZL are equipped
with a choke knob for starting a cold
engine.
Do not use the choke when starting
a warm engine.
As soon as the engine is running,
push the choke knob back to its
initial position.
Never activate the choke when the
engine is running.
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0478 192 9809 A - EN
Activating the choke:
Before starting, pull out the choke knob (1)
to the stop.
Deactivating the choke:
● Press in the choke knob to the stop.
8.5 Mowing deck switch (RT 5097, RT 5097 C, RT 5097 Z, RT 5112 Z)
The mowing deck switch can be used to
engage the mowing deck when the engine
is running and with due regard to all safety
devices (Ö 12.).
Avoid damage to the machine!
Do not engage the mowing blade in
tall grass or when set to the lowest
cutting level.
Only activate the mowing deck at
maximum speed (throttle lever in
MAX position).
Engaging the mowing deck:
Press the top of the mowing deck
switch (1) to the stop.
Disengaging the mowing deck:
Press the bottom of the mowing deck
switch (1) to the stop.
If necessary, the electronics can be
programmed so that the mowing
deck is automatically disengaged
when the grass catcher box is full.
(Ö 13.8)
8.6 Mowing deck button (RT 6112 C, RT 6112 ZL, RT 6127 ZL)
The mowing deck button can be
used to engage the mowing deck
when the engine is running and
with due regard to all safety devices
(Ö 12.).
Avoid damage to the machine!
Do not engage the mowing blade in
tall grass or when set to the lowest
cutting level.
Only activate the mowing deck at
maximum speed (throttle lever in
MAX position).
Engaging the mowing deck:
Press the mowing deck button (1) for at
least 1 second. The mowing deck is
engaged as soon as the "mowing deck
active" symbol (2) appears on the display.
Disengaging the mowing deck:
● Press the mowing deck button. The
mowing deck is disengaged as soon as
the "mowing deck active" symbol
disappears from the display.
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0478 192 9809 A - EN
21
If necessary, the electronics can be
programmed so that the mowing
deck is automatically disengaged
when the grass catcher box is full.
(Ö 13.8)
8.7 Cruise control button (RT 6112 ZL, RT 6127 ZL)
The cruise control button sets the
current driving speed when driving.
Although the "cruise control active"
symbol appears on the display
when reversing after the cruise
control button is pressed, cruise
control remains deactivated for
safety reasons.
The cruise control button has no
function on the model RT 6112 C.
Activating cruise control:
Select the required driving speed and
press the cruise control button (1) for at
least 1 second. Cruise control is activated
as soon as the "cruise control active"
symbol (2) appears on the display. The
drive pedal is locked in place and the
current driving speed is maintained. The
foot can be removed from the drive pedal.
Deactivating cruise control:
Risk of injury!
Place the foot on the drive pedal
prior to deactivating the cruise
control in order to prevent the drive
pedal from springing back, thereby
preventing abrupt braking of the
ride-on mower.
● Press the cruise control button, leave
the driver's seat or actuate the brake
pedal.
Cruise control is deactivated as soon as
the "cruise control active" symbol
disappears from the display.
8.8 Reverse mowing safety switch
The reverse mowing safety switch
enables the mowing deck for
mowing in reverse driving
direction. The mowing deck is
automatically disengaged for safety
reasons if reverse mowing is not enabled.
For reverse mowing, briefly press reverse
mowing safety switch (1) once with the left
foot within a defined time window.
1 Enable with the mowing deck
disengaged:
● Bring the ride-on mower to a standstill
and select reverse driving direction.
(Ö 8.9)
● Briefly press the reverse mowing safety
switch once with the left foot.
● Engage the mowing deck and start
reverse mowing within 5 seconds.
(Ö 8.5), (Ö 8.6)
Reverse mowing can also be enabled
up to 1 second after starting.
2 Enable with the mowing deck
engaged:
● Briefly press the reverse mowing safety
switch once with the left foot during
mowing operation.
● Switch to reverse driving direction
within 5 seconds and continue mowing.
(Ö 8.9)
Reverse mowing can also be enabled
up to 1 second after changing the
driving direction.
If the reverse mowing safety switch
is continuously pressed, the switch
must be released within the time
window and pressed again.
The "reverse mowing" symbol
flashes on the display on the
models RT 6112 C, RT 6112 ZL
and RT 6127 ZL until reverse
mowing is enabled. (Ö 10.5)
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0478 192 9809 A - EN
8.9 Driving direction selector lever
The driving direction is selected
using the driving direction
selector lever.
The ride-on mower drives in the
selected direction after the drive pedal is
actuated – actuating the driving direction
selector lever alone does not set the
machine in motion.
For safety reasons, the driving
direction selector lever is locked
when the drive pedal is pressed.
Therefore release the drive pedal
before actuating the driving
direction selector lever.
Selecting the driving direction:
8.10 Steering wheel
Warning:
Always hold the steering wheel
firmly in both hands when driving.
ENES
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Forward driving direction:
Move the driving direction selector
lever (1) to the front position.
Reverse driving direction:
Move the driving direction selector
lever (1) to the rear position.
0478 192 9809 A - EN
Turning the steering wheel (1) to the left L
or right R changes the driving direction of
the machine.
The further the steering wheel (1) is
turned, the smaller the turning radius.
8.11 Driver's seat adjustment
The driver's seat can be adjusted
to seven notched positions.
● Stop the engine. (Ö 13.3)
● Sit on the driver's seat and put your
right hand on the steering wheel.
1 With your left hand, lift and hold the
driver's seat adjustment lever (1).
2 Move the driver's seat (2) to the
required position. Then release the driver's
seat adjustment lever again and allow it to
engage.
8.12 Drive pedal
Note
Before actuating the drive pedal,
ensure that the correct driving
direction is selected at the driving
direction selector lever.
If the parking brake is engaged or
the brake pedal is pressed, the
drive pedal cannot be actuated.
The driving speed can be
continuously regulated via the
drive pedal.
23
Engaging the parking brake:
Stopping:
Take foot off the drive pedal (selfpropulsion) (1).
Reducing the driving speed:
Reduce pressure on the drive
pedal (1).
Increasing driving speed:
Press down drive pedal (1).
8.13 Brake pedal
The machine can be braked when driving
and can be blocked at a standstill via the
brake pedal.
Press the brake pedal (1).
The more firmly the brake pedal (1) is
pressed, the more the rear wheels are
braked.
Warning!
Never operate the machine with a
defective brake.
Always have a defective brake
repaired or adjusted by a specialist
dealer.
STIHL recommends STIHL
specialist dealers.
Never try to service the brakes
yourself.
8.14 Parking brake
The rear wheels of the machine
are blocked by the engaged
parking brake. This prevents the
ride-on mower from being set in motion
inadvertently (e.g. on slopes, etc.).
Note
Always check the function of the
brakes before engaging the parking
brake.
Press the brake pedal (1) down to the stop
with the foot and hold. Pull the parking
brake lever (2) upwards.
● Release the brake pedal again.
The parking brake is activated if the
brake pedal remains in the pressed
position.
The "parking brake engaged" symbol
appears on the display of the models
RT 6112 C, RT 6112 ZL and
RT 6127 ZL when the parking brake is
engaged. (Ö 10.5)
● Release the parking brake lever. This
swings downwards. The rear wheels
are blocked.
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0478 192 9809 A - EN
Releasing the parking brake:
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Briefly press on brake pedal (1) with the
foot.
● The brake pedal returns to the initial
(unactuated) position. The parking
brake is deactivated and the rear
wheels are no longer blocked.
8.15 Cutting height adjustment lever
Eight cutting levels can be set
using the cutting height adjustment
lever.
Raising and lowering the mowing deck:
Risk of injury!
Always hold the cutting height
adjustment lever when adjusting
the cutting height.
Adjust the cutting height only when
the ride-on mower is at a standstill.
The procedure for releasing the
cutting height adjustment lever
depends on whether the mowing
deck is installed or removed.
Releasing the cutting height adjustment
lever:
With the mowing deck installed Pull the
cutting height adjustment lever (1) inwards
(towards the driver's seat) and hold.
With the mowing deck removed Push
the cutting height adjustment lever (1)
slightly downwards and then inwards
(towards the driver's seat) and hold.
Guide the released cutting height
adjustment lever (1) upwards/downwards
and set the required cutting height.
Locking the cutting height adjustment
lever:
Guide the cutting height adjustment
lever (1) outwards until it engages in the
chosen notched position.
8.16 Grass catcher box emptying lever
The grass catcher box can be
emptied using the grass catcher
box emptying lever, without the
user having to leave the driver's
seat.
● Disengage the mowing deck.
(Ö 8.5), (Ö 8.6)
● Brake the machine to a complete
standstill.
● Keep the brake pedal pressed or
engage the parking brake.
0478 192 9809 A - EN
25
Pull the grass catcher box emptying
lever (1) upwards.
Push the grass catcher box emptying
lever (1) forwards. The grass catcher
box (2) swings upwards and the clippings
fall out.
The "grass catcher box open or missing"
symbol appears on the display of the
models RT 6112 C, RT 6112 ZL and
RT 6127 ZL when the grass catcher box is
raised. (Ö 10.5)
● Slowly move the grass catcher box
emptying lever towards the rear and
allow the grass catcher box to reengage with the rear panel.
● Press the grass catcher box emptying
lever downwards and move to the initial
position.
8.17 Grass catcher box release lever
Warning:
Ensure that you do not pinch your
fingers when actuating the grass
catcher box release lever.
The grass catcher box release lever is
located underneath the grass catcher box
handle.
The grass catcher box release lever must
be pulled upwards and held before
attaching or detaching the grass catcher
box.
Releasing the grass catcher box:
Pull grass catcher box release lever (1)
fully upwards and hold.
● The grass catcher box is released and
can be removed.
Locking the grass catcher box:
After attaching the grass catcher box,
release the pulled-out grass catcher box
release lever (1). Ensure that the lock
engages fully.
– Once locked, the grass catcher box is
firmly attached to the machine again.
8.18 Gearbox freewheel lever
The gearbox can be
disengaged (e.g. for pushing
the machine) or engaged (for
self-propulsion) using the gearbox
freewheel lever.
Warning!
Risk of crush injuries!
Only pull out the gearbox freewheel
lever on level surfaces, as the
machine may be set in motion.
If the machine is parked with the
gearbox disengaged, the parking
brake must be engaged.
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0478 192 9809 A - EN
Disengaging the gearbox:
Pull the gearbox freewheel lever (1)
outwards to the stop and then raise.
Engaging the gearbox:
Guide the gearbox freewheel lever (1)
downwards and then press inwards to the
stop.
8.19 Level sensor (grass catcher box)
A continuous tone sounds if the grass
catcher box is full. This signals that the
grass catcher box needs to be emptied.
Disengaging the mowing deck
stops the continuous tone.
The time for the filled grass catcher box
signal is adjusted by modifying the length
of the (grass catcher box) level sensor.
This allows you to adapt filling of the grass
catcher box to the characteristics of the
clippings.
A shorter sensor generally causes later
triggering of the signal (the grass catcher
box is filled to a greater extent, ideal for
very dry clippings).
The level sensor can be adjusted to 6
notched positions.
In delivery condition, the level sensor
(grass catcher box) is fully extended.
Adjusting the level sensor:
● Stop the engine. (Ö 13.3)
● Engage the parking brake. (Ö 8.14)
● Remove the grass catcher box.
(Ö 13.10)
Extend or shorten the level sensor by
moving the slide (1) of the (grass catcher
box) level sensor in the direction of the
arrows.
● Attach the grass catcher box. (Ö 13.10)
9. Electronics
In order to ensure safe operation, the rideon mower is equipped with electronics
which check all the safety devices before
each starting procedure and when the
mower is running.
The electronics in the models
RT 6112 C, RT 6112 ZL,
RT 6127 ZL also control the
display. The display on these
models therefore shows additional
information.
9.1 Self-diagnosis when starting
Before the engine is started, the
electronics perform self-diagnosis. This
checks switches, wiring, etc. for correct
functioning.
Activating self-diagnosis:
● Sit on the driver's seat.
● Release the parking brake. (Ö 8.14)
● Turn the ignition key to the "ignition on"
position (Ö 8.1) – do not press any
buttons and switches or actuate any
pedals.
Self-diagnosis without faults:
A short beep sounds – the electronics are
activated and the ride-on mower is ready
to start.
RT 6112 C, RT 6112 ZL, RT 6127 ZL:
All symbols are shown on the display for
2 seconds. The operating hours can be
read off for 5 seconds.
● Start the engine. (Ö 13.2)
ENES
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Self-diagnosis with faults:
A continuous beep or three successive
beeps sound.
A continuous beep signals a fault in the
electronics or a battery connected with the
incorrect polarity.
● Turn the ignition key to the "engine off"
position. (Ö 8.1)
● Check the polarity of the battery
connections and connect the wiring
correctly if necessary. (Ö 15.19)
● Repeat self-diagnosis.
If the continuous beep continues to
sound even after the battery is correctly
connected, an electronic fault is
present. Consult your specialist dealer;
STIHL recommends STIHL specialist
dealers.
Three successive beeps signal a fault in
the electrics (short circuit) or in the seat
switch. It is not possible to start the engine.
RT 6112 C, RT 6112 ZL, RT 6127 ZL:
The relevant symbols and the text ERROR
flash on the display.
● Turn the ignition key to the "engine off"
position. (Ö 8.1)
● Have a detailed diagnosis carried out
by a specialist dealer. STIHL
recommends STIHL specialist dealers.
9.2 Ride-on mower faults during
operation
The electronics monitor the safe condition
during operation. Three successive beeps
sound if there is a fault in the electrics
(short circuit, loose connectors, broken
wire).
The engine is stopped – the respective
symbol and the text "ERROR" flash on the
display on the models RT 6112 C,
RT 6112 ZL, RT 6127 ZL.
Behaviour:
● Turn the ignition key to the "engine off"
position. (Ö 8.1)
● Activate self-diagnosis. (Ö 9.1)
If the fault cannot be rectified,
detailed diagnosis is necessary.
Consult your specialist dealer;
STIHL recommends STIHL
specialist dealers.
9.3 Electronics faults
In rare cases, electronics faults may occur
during operation of the mower. A
continuous beep sounds and the engine is
stopped.
Behaviour:
● Turn the ignition key to the "engine off"
position. (Ö 8.1)
● Activate self-diagnosis. (Ö 9.1)
● Restart the engine. (Ö 13.2)
If the fault cannot be rectified,
detailed diagnosis is necessary.
Consult your specialist dealer;
STIHL recommends STIHL
specialist dealers.
10. Display on the RM 6112 C, RM 6112 ZL, RM 6127 ZL
Faults, operating information and active
functions are shown on the display.
The display is protected against
damage (e.g. due to water) on
account of its design. It may be
affected by fogging due to
temperature variations and high air
humidity. After the ride-on mower
has been started, ingressed
moisture dissipates within a few
minutes under the influence of heat
from the engine.
1 5-digit segmental display (Ö 10.1)
2 Set button (Ö 10.2)
3 Mode button (Ö 10.3)
Faults (Ö 10.4)
4 Engine oil pressure too low
(RT 6127 ZL)
5 Battery fault
Operating information (Ö 10.5)
6 Reverse mowing
7 Driver's seat unoccupied
8 Grass catcher box open or missing
9 Fuel reserve
10 Grass catcher box full
11 Parking brake engaged
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0478 192 9809 A - EN
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