Mountfield Lawn Mower 4125M - 4135H - 4155H - 4155H 4WD Instructions Manual

							4125M - 4135H - 4155H - 4155H 4WD
8211-0412-02
INSTRUCTIONS FOR USE 
						

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ENGLISHEN
1 GENERAL
This symbol indicates WARNING. Seri-
ous personal injury and/or damage to 
property may result if the instructions 
are not followed carefully.
You must read these instructions for use 
and the accompanying pamphlet 
“SAFETY INSTRUCTIONS” careful-
ly, before starting up the machine.
1.1 SymbolsThe following symbols appear on the machine. 
They are there to remind you of the care and atten-
tion required during use and maintenance.
This is what the symbols mean:
Warning!
Read the instruction manual and the safety 
manual before using the machine.
Warning!
Watch out for discarded objects. Keep on-
lookers away.
Warning!
Always wear hearing protectors.
Warning!
This machine is not designed to be driven 
on public roads.
Warning!
The machine, equipped with original ac-
cessories, must not be driven in any direc-
tion on slopes with a gradient greater than 
10º.
Warning!
Risk of crushing injuries. Keep hands and 
feet well away from the articulated steer-
ing joint.
Warning!
Risk of burn injuries. Do not touch the si-
lencer/catalytic converter. 
2 SAFETY INSTRUCTIONS
2.1 General• Please read through these instructions carefully. 
Learn all the controls and the correct use of the 
machine.
• Before use, all drivers must apply for and 
receive practical training in the operation of the 
machine. Particular emphasis should be placed 
on the fact that:
a. The use of ride-on lawnmowers requires care 
and concentration.b. On slopes, it is not possible to control a 
sliding ride-on lawnmower by braking. The 
main reasons for losing control are insufficient 
traction, excessively high speed, insufficient 
braking, the machine not being suited to the 
task, lack of attention to the surface or incorrect 
use as a towing vehicle.
• Never let children or anyone who is not familiar 
with these instructions to use the machine. 
Local regulations may impose restrictions as 
regards the age of the driver.
• Never use the machine if others, particularly 
children or animals, are in the vicinity.
• Remember that the driver is responsible for 
accidents that happen to other people or their 
property.
• Do not let children or other passengers to ride 
with you on the machine. They might fall off 
and be seriously injured, or they might prevent 
the machine being driven safely.
• Do not use the machine if you are under the 
influence of alcohol, drugs or medication. 
Neither should you use it when you are tired or 
feeling unwell.
2.2 Preparations• Wear strong shoes and long trousers when using 
the machine. Do not operate it barefoot or 
wearing sandals.
• Wear appropriate clothing when using the 
machine. Do not wear loose, hanging clothes, 
jewellery, scarves, ties, etc., which can get 
caught in rotating parts. Tie up long hair.
• Carefully check the area that is to be cut/cleared 
of snow. Remove all loose stones, sticks, steel 
wire and other foreign objects which the 
machine could throw out.
• Warning – Petrol is highly inflammable.
a. Always store petrol in containers that are 
made especially for this purpose.
b. Only fill or top up with petrol outdoors, and 
never smoke when filling or topping up.
c. Fill with petrol before starting the motor. 
Never remove the filler cap or fill with petrol 
while the engine is running or still warm.
d. If petrol is spilt, do not try to start the engine 
but instead move the machine away from the 
place where the spillage occurred and avoid any 
possible causes of sparks until the petrol fumes 
have evaporated.
e. Do not forget to screw the cap on the petrol 
tank and the storage container after filling.
• Replace faulty silencers. 
						

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ENGLISHEN
• Before use, always check that blades and 
mounting devices are not worn or damaged. 
Replace worn or damage parts as a set so that 
the correct balance is maintained.
• The battery (on electrically started machines) 
gives off explosive gases. Keep sparks, flames 
and cigarettes away. Ensure there is sufficient 
ventilation during charging.
• The battery contains toxic material. Do not 
damage the battery casing. If the casing is 
damaged, avoid contact with the content of the 
battery.
• Do not throw out old, defective batteries with 
the rubbish. Contact the local authorities for 
correct waste management.
• Do not short circuit the battery. Sparks occur 
which can result in fire.
2.3 Driving• Start the engine according to the instructions in 
the user guide. Keep your feet away from the 
blades.
• Do not run the engine in confined areas where 
hazardous carbon monoxide gases can collect.
• Only use the machine in daylight or where there 
is good lighting.
• Always use hearing protectors.
• Take care when approaching obstacles which 
obscure your vision.
• Always keep children away from the machine’s 
working area. Get another adult to keep the 
children under supervision.
• Take care when reversing. Look behind you 
both before and during reversing to check for 
any obstacles. Look out for small children.
• Disengage the blade(s) and the connection 
before starting the engine.
• Never have your hands or feet near or under 
rotating parts. Watch out for the blades. Do not 
stand right in front of the discharge opening.
• Avoid using the machine on wet lawns.
• Be careful when driving on slopes. No sudden 
starting or stopping when moving up or down a 
slope.
• Release the clutch pedal slowly. Always drive 
with the gear engaged, and do not disengage 
when driving down slopes.
• Never cut across a slope. Move from the top 
down, and from the bottom to the top.
• Use low acceleration when engaging the drive, 
especially in long grass. Reduce the speed on 
slopes and when making sharp turns to prevent 
the machine from tipping over or you losing 
control of the machine.• Watch out for holes in the ground and other 
hidden dangers.
• Do not drive too near ditches or high edges.  
The machine can turn over if a wheel drives 
over the edge or the edge breaks.
• Take care when towing and when using heavy 
equipment.
a. Only use an approved towing device.
b. Limit the load so that it can be controlled 
safely.
c. Do not make any sudden turns. Take care 
when reversing.
d. Use wheel weights or front weight when 
recommended in the user instructions.
• Look out for traffic at crossings or when driving 
near roads.
• Stop the blade(s) when crossing a surface other 
than grass during mowing.
• When using any of the accessories, never direct 
the discharge at somebody standing beside it, 
and do not allow anyone to stand near the 
machine when it is running.
• Never operate the machine with insufficient 
protection or without the safety devices in 
place.
• Existing safety devices may not be 
disconnected or disengaged. Check that the 
safety devices work each time before using the 
machine.
• Do not alter the engine’s regulator setting and do 
not race the engine. The danger of personal injury 
increases when the engine is run at high revs.
• Do not touch engine components which become 
warm during use. Risk of burn injuries.
• Do not leave the driving seat without:
a. Disengaging the power take-off and lowering 
the accessories.
b. Putting the gear in neutral and activating the 
parking brake.
c. Stopping the engine and removing the key.
• Only use accessories that are approved by the 
machine’s manufacturer.
• The machine may not be used without 
accessories/tools being installed in the 
machine’s tool mounts. Driving without 
accessories can have a negative effect on the 
stability of the machine.
• Take care when using grass collectors and other 
accessories. These can alter the machine’s 
stability. Particularly on slopes.
• Disengage the drive to the accessories, shut off 
the engine and disconnect the spark plug cable 
or remove the starter key: 
						

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ENGLISHEN
a. To remove sticks and rubbish or when the 
discharge has become clogged.
b. To check, clean or service the machine.
c. To check whether damage has occurred and 
to carry out any repairs before starting and 
using the machine again after a collision with a 
foreign object.
d. To check the machine if it begins to vibrate 
excessively. (Check immediately).
• Disengage the drive to accessories during 
transport or when the machine is not in use.
• Shut off the engine and disconnect the drive to 
the accessories:
a. Before filling with petrol.
b. Before removing the grass collector.
c. Before adjusting the height setting, assuming 
this cannot be done from the driver’s position.
• Reduce the acceleration when the engine is to 
be stopped, and if the engine is equipped with a 
fuel shut-off valve, this should be switched off 
when the work is finished.
• Take care with multiple blade decks as one 
rotating blade can cause other blades to rotate. 
• The machine, equipped with original 
accessories, must not be driven in any direction 
on slopes with a gradient greater than 10º.
• The cutting deck’s original blade(s) may not be 
replaced with non-original devices intended for 
e.g. moss scarification. If such devices are used, 
the guarantee will cease to be valid. There is 
also a risk of serious injury or damage to people 
or property. 
• Take care when unloading and loading the 
machine onto a trailer or lorry.
2.4 Maintenance and storage• Tighten all nuts and screws so that the machine 
is in safe working condition.
• At regular intervals check that the cutting 
deck’s blade screw(s) are properly tightened. 
• Regularly check the operation of the brakes. It 
is important to maintain and repair the brakes if 
necessary. 
• Never store the machine with petrol in the tank 
in buildings where the fumes can come into 
contact with open flames or sparks.
• Allow the engine to cool before placing the 
machine in a store.
• To reduce the risk of fire, keep the engine, 
silencer, battery and petrol tank free from grass, 
leaves and surplus oil.
• Check frequently whether there is any wear or 
damage to the grass collector.
• For the sake of safety, replace worn or damaged 
parts.• Always use genuine spare parts. Non-genuine 
spare parts can entail a risk of injury, even if 
they fit the machine.
• Replace damaged warning and instruction 
stickers.
• If there is no mechanical lock for the transport 
position, the cutting deck must be lowered 
when parked, stored or when the machine is left 
unsupervised. 
• If the petrol tank is to be emptied, this must take 
place outdoors.
• Store the machine so that children cannot get to it.
• The battery contains acid. In the event of 
mechanical damage or overcharging, acid can 
leak out. 
• Never overcharge the battery. Overcharging can 
cause the battery to explode, throwing the acid 
in all directions.
• If acid comes into contact with the eyes or skin, 
this can cause serious injuries. If any part of the 
body has come into contact with acid, rinse 
immediately with copious amounts of water and 
seek medical assistance as soon as possible.
• Fumes from acid that are inhaled cause damage 
to mucous membranes and other internal 
organs. Seek medical assistance if acid fumes 
have been inhaled.
• Acid causes serious damage to tools, clothes 
and other material. Rinse away spilled acid 
immediately with water.
• Do not short circuit the battery’s terminals. 
Sparks occur which can result in fire. Do not 
wear metal jewellery which can come into 
contact with the battery terminals.
• In the event of damage to the battery casing, 
cover, terminals or interference to the strip 
covering the valves, the battery should be 
replaced.
2.5 Storage procedureEmpty the petrol tank. Start the engine and let it 
run until it stops.
Replace the oil while the engine is still warm. 
Unscrew the spark plug and pour a tablespoonful 
of oil into the cylinder. Rotate the engine a few 
turns to that the oil is distributed in the cylinder. 
Install the spark plug. 
Clean the entire machine. It is particularly 
important to clean under the cutting deck. Touch 
up paint damage to prevent rust.
Store the machine indoors in a dry place.
Machines with an electric starter:
Remove the battery. Store it well charged in a cool 
place (between 0°C and +15°C).  
						

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ENGLISHEN
At the correct storage temperature, the battery 
should be maintenance-charged every four 
months.
The battery acid is extremely corrosive 
and can cause injuries and damage to 
skin and clothing. Always use rubber 
gloves and glasses (goggles) to protect 
your eyes. Avoid inhaling any acid 
vapour.
Do not incline the battery too much so 
that the battery acid can run out onto 
hands or clothing. If this should hap
3 ASSEMBLY
To avoid injury and damage to people 
and property, do not use the machine 
until all the measures below have been 
carried out..
3.1 Accessories bag
The machine is supplied with a plastic bag contain-
ing components which shall be used during the as-
sembly. The bag contains (fig. 1):
Pos. No. Designation Dimension
A 1 Gear lever (not 4135H, 4155H, 4WD)
B Spare key
C 1 Tension pin 6 x 36
D 1 Shim washer 16 x 38 x 0.5
E 1 Shim washer 16 x 38 x 1.0
F 2 Shoulder washer
G 2 Screw 8 x 20
H 2 Screw knob
I 4 Washer 8.4 x 24 x 1.5
J 1 Drawing plate
K 4 Screw 8 x 20
L2 Nut
M 2 Screw for battery
N 2 Nut for battery
3.2 Engine casing
To fill with fuel and to inspect and maintain the en-
gine and battery, open the engine casing. 
The engine must not be running when 
the casing is opened. 
3.2.1 Opening
1. Raise the seat lock (fig. 2) and fold the seat for-
wards.
2. Pull up the rubber strap at the front edge of the 
casing (fig. 3).
3. Grasp the front edge of the engine casing and 
fold up the casing (fig. 4).3.2.2 Closing
1. Grasp the front edge of the engine casing and 
fold down the casing (fig. 4).
2. Secure the front edge of the casing with the rub-
ber strap (fig. 3).
The machine may not be operated un-
less the engine casing is closed and 
locked. Risk of burns and crushing in-
juries.
3.3 Battery
See “7.8”.
3.4 Seat, fig. 6
Release the catch (S) and fold up the seat bracket.
Install the mounting in the rear (upper) holes as 
follows:
1. Install the shoulder washers (F) on the screws 
(K).
2. Insert the screws through the slots in the brack-
et. Place a washer (I) between the seat and the 
bracket.
3. Tighten the screws in the seat. Tightening 
torque: 9±1.7 Nm.
If the screws are tightened more than 
9±1.7 Nm, the seat will be damaged.
4. Check that the seat moves easily in the slots in 
the bracket.
Install the mounting in the front (lower) holes as 
follows:
1. Install the screw knobs (H) on the screws (G).
2. Install a washer (I) on each screw.
3. Insert the screws through the slots in the bracket 
and tighten by hand in the seat.
4. Fold the seat down and place it in the desired 
position.
5. Tighten the screw knobs (H) by hand.
The screw knobs (H) and the seat will 
be damaged if tools are used.
The seat can be folded. If the machine is parked 
outside when it is raining, fold the seat forward to 
protect the seat cushion from getting wet.
The seat is locked. To fold the seat up or down, re-
lease the catch (S).
3.5 Steering wheelSee fig. 7. In order to minimise the axial play in the 
steering column, the shim washers (D) and/or (E) 
must be installed on the steering column between 
the steering column jacket and the bracket as fol-
lows.