Mountfield Lawn Mower 2105M - 2125H Instructions Manual

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2/3. Operating position. 
4. Start position – the electric start motor 
is activated when the key is turned to the 
spring-loaded start position. Once the en-
gine has started, let the key return to oper-
ating position 2/3.
7. GEAR LEVER (2105M)
A lever for selecting one of the five forward gears 
in the gearbox (1-2-3-4-5), neutral (N) or reverse 
(R).
The clutch pedal must be kept pressed in when 
changing gear.
NOTE! You must make sure the machine is quite 
stationary before changing from reverse to forward 
gear or vice versa. If a gear does not engage imme-
diately, release the clutch pedal and then press it in 
once again. Engage the gear once again. Never 
force a gear in. 
8. POWER TAKE-OFF
A lever for engaging and disengaging the power 
take-off for operating the cutting deck. Two posi-
tions:
1.Forward position – power take-off dis-
engaged.
2. Backward position – power take-off en-
gaged.
9. CLUTCH RELEASE LEVER 
(2125H)
A lever for disengaging the variable transmission. 
Enables the machine to be moved by hand without 
the help of the engine. Two positions:
1. Lever pressed in – transmis-
sion engaged for normal opera-
tion.
2. Lever pulled out – transmis-
sion disengaged. The machine 
can be moved by hand.
The machine may not be towed over long distances 
or at high speeds. The transmission could be dam-
aged. 
AREAS OF USE
The maximum vertical load on the towing hitch 
must not exceed 100 N.
The maximum over-run load on the towing hitch 
from towed accessories must not exceed 500 N.
NOTE! This machine is not intended to be driven 
on public roads.
STARTING AND OPERATION
FILLING THE FUEL TANK
Open the engine hood. Unscrew the filler cap and 
fill with clean, lead-free petrol. You must never 
use 2-stroke petrol mixed with oil (fig. 11).
NOTE! Bear in mind that ordinary lead-free petrol 
is a perishable; do not purchase more petrol than 
can be used within thirty days.
Environmental petrol can be used, i.e. alkylate pet-
rol. This type of petrol has a composition that is 
less harmful for people and nature.
Petrol is highly inflammable. Always 
store fuel in containers that are made 
especially for this purpose. 
Only fill or top up with petrol outdoors, 
and never smoke when filling or top-
ping up. Fill up with fuel before starting 
the engine. Never remove the filler cap 
or fill with petrol while the engine is 
running or still warm.
Never completely fill the petrol tank. Leave an 
empty space (= at least 2-3 cm at the top of the 
tank) to allow the petrol to expand when it warms 
up without overflowing. 
CHECKING THE ENGINE OIL LEVEL
On delivery, the crankcase is filled with SAE 30 
oil.
Check the oil level every time before using to 
ensure it is correct. The machine should be 
standing on level ground.
Wipe clean around the oil dipstick. Un-
screw and pull it up. Wipe off the dipstick. 
Slide it down completely and tighten it. 
Then unscrew it and pull it up again. Read off the 
oil level. Top up with oil to the “FULL” mark, if  
						

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the level comes below it (fig. 12).
SAFETY SYSTEM
This machine is equipped with a safety system that 
consists of: 
- a switch on the gearbox (only 2105M).
- a switch on the break pedal (only 2125H). 
- a switch in the seat/seat bracket (all).
In order to start the machine, the following are nec-
essary: 
- gear lever in neutral (only 2105M).
- brake pedal pressed down. 
- driver sitting on seat. 
- power take-off disengaged.
Always check the operation of the safe-
ty system before using the machine!
With the engine running and the driver sitting on 
the seat, check as follows: 
- select a gear, lift your weight off the seat – the 
engine must stop (only 2105M). 
- press the drive pedal so that the machine starts 
to move, release the drive pedal – the machine 
should stop (only 2125H). 
- engage the power take-off, lift your weight off 
the seat – the engine should stop. 
Do not use the machine if the safety sys-
tem is not working! Take the machine 
to a service workshop for inspection! 
STARTING ENGINE
1. Open the fuel cock (fig. 11).
2. Make sure that the spark plug cable is properly 
in place.
3. Check to make sure that the power take-off is 
disengaged. 
4a. 2105M: Put the gear lever in neutral. 
4b. 2125H: Do not keep your foot on the drive ped-
al. 
5. Starting cold engine – put the throttle control in 
the choke position. Starting warm engine – put the 
throttle control at full throttle (approx. 1 cm behind 
the choke position).
6. Depress the brake pedal fully.
7. Turn the ignition key and start the engine.
8. Once the engine has started, move the throttle 
control gradually to full throttle if the choke has been used. 
9. When starting from cold, do not make the ma-
chine work under load immediately, but let the en-
gine run for a few minutes first. This will allow the 
oil to warm up. 
When in use, always operate the engine at full 
throttle.
STOPPING
Disengage the power take-off. Apply the parking 
brake. 
Allow the engine to idle 1 - 2 mins. Stop the engine 
by turning off the starter key.
Shut off the petrol cock. This is particularly impor-
tant if the machine is to be transported on a trailer 
for example.
If the machine is left unattended, re-
move the ignition key. Also remove the 
spark plug cable from the spark plug.
The engine may be very warm immedi-
ately after it is shut off. Do not touch the 
silencer, cylinder or cooling fins. This 
can cause burn injuries.
DRIVING TIPS
Make sure that there is the correct quantity of oil in 
the engine when driving on slopes (oil level on 
“FULL”). 
Be careful when driving on slopes. No 
sudden starting or stopping when mov-
ing up or down a slope. Never drive 
across a slope. Move from the top down, 
and from the bottom to the top. 
The machine, equipped with original 
accessories, may not be driven on slopes 
greater than 10º in any direction.
Reduce the speed on slopes and when 
making sharp turns to prevent the ma-
chine from tipping over or you losing 
control of the machine.
Do not turn the steering wheel to full 
lock when driving in top gear and at full 
throttle. The machine can easily topple 
over.
Keep hands and fingers well away from 
the seat bracket. Risk of crushing inju-
ries. Never drive with the engine hood  
						

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open.
Never drive with the cutting deck in the 
raised position. This damages the deck 
drive belt. 
SERVICE AND MAINTENANCE
SERVICE PROGRAM
We recommend that all service work is carried out 
by an authorised workshop. This guarantees that 
the work is performed by trained personnel and 
with genuine spare parts.
PREPARATIONS
Unless otherwise stated, all service and mainte-
nance must be carried out on a stationary machine 
when the engine is not running.
Prevent the machine from rolling by al-
ways applying the parking brake.
Prevent unintentional starting of the 
motor by disengaging the drive, shut-
ting off the engine and disconnecting 
the spark plug cable or removing the 
starter key. 
CLEANING
To reduce the risk of fire, keep the en-
gine, silencer, battery and fuel tank free 
from grass, leaves and oil.
To reduce the risk of fire, regularly 
check the machine for oil and/or fuel 
leakage. 
When washing the machine with water under high 
pressure, do not point the jet directly at the trans-
mission.
Do not point jets of water directly at the engine. 
Use a brush or compressed air in order to clean it.
ENGINE OIL
Change engine oil the first time after 5 hours of op-
eration, and subsequently after every 50 hours of 
operation or once a season. 
Change the oil more often (after 25 hours of oper-
ation or at least once a season) if the engine has to 
operate under demanding conditions or if the am-
bient temperature is high.Change oil when the engine is warm. Always use 
a good grade of oil (service grade SF, SG or SH). 
The engine oil may be very hot if it is 
drained off directly after the engine is 
shut off. So allow the engine to cool a 
few minutes before draining the oil.
Unscrew the oil drain plug (fig. 13). It is situated 
on the left of the engine (machine viewed from the 
rear).
Collect the oil in a collection vessel. Then take 
the oil to a recycling station. Do not allow oil to 
get on the V-belts.
Screw in the oil drain plug. 
Remove the dipstick and fill up with new oil to the 
“FULL” mark.
Oil capacity: 1.4 litres
Oil type, summer (> 4ºC): SAE-30
(SAE 10W-30 can also be used. However, oil con-
sumption may increase somewhat if 10W-30 is 
used. Therefore, check the oil level more regularly 
if you use this type of oil).
Oil type, winter (< 4ºC): SAE 5W-30 
(if this oil is not available, use SAE 10W-30).
Use oil without any additives.
Do not fill with too much oil. This can cause the 
engine to overheat. 
AIR FILTER - ENGINE
Change the pre-filter once a year or every 25 hours 
of operation.
Clean the paper filter insert once a year or after 
every 100 hours of operation, whichever comes 
first.
NOTE! Both filters should be replaced/cleaned 
more often if the machine operates on dusty 
ground.
1. Remove the protective cover on the air filter 
(fig. 14). 
2. Dismantle the paper filter insert and the foam 
pre-filter. Make sure that no dirt gets into the car-
burettor. Clean the air filter housing.
3. Replace the pre-filter.
4. Clean the paper filter insert as follows: Knock it 
lightly against a flat surface. If the filter is very 
dirty, change it. 
						

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5. Assemble in the reverse order.
Petroleum-based solvents such as kerosene may 
not be used for cleaning the paper filter insert. 
These solvents can destroy the filter.
Do not use compressed air for cleaning the paper 
filter insert. The paper filter insert must not be 
oiled. 
SPARK PLUG
Clean the spark plug after every 100 hours of oper-
ation or once a season. For replacing a spark plug, 
a spark plug sleeve A and a torsion pin B are pro-
vided in the accessories bag.
The engine manufacturer recommends:
Champion RC12YC.
Correct spark gap: 0.7 - 0.8 mm (fig. 15).
COOLING AIR INTAKE - ENGINE
The engine is air-cooled. A blocked cooling sys-
tem can damage the engine. The engine should be 
cleaned at least once a year or every 100 hours of 
operation.
Remove the fan casing. Clean the cooling fins on 
the cylinder, the fan and the rotating protective 
grille. Clean more frequently if mowing dry grass. 
LUBRICATION - CHASSIS
The machine has three grease nipples on the rear 
axle which are lubricated with universal grease 
every 25 hours of operation 
(fig. 17).
Apply universal grease to all the plastic bearings a 
couple of times per season. 
Apply universal grease to the control arm joints a 
couple of times each season.
Apply a coating of engine oil to the tension arm 
joints a couple of times each season.
Apply a few drops of engine oil to both ends of the 
throttle control cables a couple of times a season.
2125H: 
The hydrostatic transmission is filled with oil 
(10W-40) on delivery from the factory. Unless it is 
opened (only to be performed by a specialist), and 
provided no leakage occurs, no topping up with oil 
should normally be carried out. Transmission oil 
does not normally need to be changed.
STEERING CABLE
The steering cables should be adjusted for the first 
time after the machine has been in operation for 2 
- 3 hours, and then after every 25 hours of opera-
tion.
Tension the steering cables by tightening up the 
nut (fig. 18). Important! The screws in the ends of 
the cable should be held firmly during adjustment 
so that the cable is not twisted. Using an adjustable 
wrench or similar, grasp the key handle on the 
screws in the ends of the cable.
Adjust the steering cables until all play is removed.
Do not tension the steering cables too hard. Other-
wise the steering will be heavy and wear and tear 
on the cables will increase.
SERVICE
Authorised service workshops carry out repairs 
and guarantee service. They use original spare 
parts.
Original spare parts are supplied by service 
workshops and by many dealers.
We recommend that the machine be handed in to 
an authorised service workshop for service, 
maintenance and checking of the safety devices 
once a year.
PURCHASE TERMS
A full guarantee is issued against manufacturing 
and material defects. The user must carefully fol-
low the instructions given in the enclosed docu-
mentation.
Guarantee period
For consumer use: two years from purchase date.
For batteries: six months from the purchase date.
Exceptions
The guarantee does not cover damage due to:
- neglect of the user to acquaint himself with ac-
companying documentation
- carelessness 
- incorrect and non-permitted use or assembly
- the use of non-genuine spare parts
- the use of accessories not supplied or approved 
by GGP 
						

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Neither does the guarantee cover:
- wearing components such as blades, belts, 
wheels and cables
- normal wear
- engine and transmission. These are covered by 
the appropriate manufacturer’s guarantees with 
separate terms and conditions.
The purchaser is covered by each country’s 
national laws. The rights to which the purchaser is 
entitled with the support of these laws are not 
restricted by this guarantee.
PRODUCT IDENTITY
The identity of the product is determined by two 
parts:
1. The machine’s item and serial numbers:
2. The engine’s model, type and serial numbers:
Found on the machine’s fan housing as illustrated:
Use these identification terms during all contact 
with service workshops and when purchasing 
spare parts.
As soon as possible after acquiring the machine, 
the above number should be written in on the last 
page of this publication. 
ENVIRONMENT
For environmental reasons, we recommend that 
particular attention is given to the following points:
• Always use Alkylate petrol (“Environmental 
petrol“).
• Always use a funnel and/or a petrol can with 
overfill protection to avoid spillage when filling 
with petrol. 
• Do not fill the petrol tank right to the top. 
• Do not fill too much engine and/or transmission 
oil (see user instructions for the correct 
amount). 
• Collect up all oil during oil changes. Do not 
spill any. Hand in the oil to a recycling station. 
• Do not discard replaced oil filters with normal 
rubbish. Hand them in to a recycling station. 
• Do not discard replaced lead batteries with 
normal rubbish. Hand in to a battery collection 
point for recycling.
• Replace the silencer if it is broken. Always use 
original spare parts when carrying out repairs. 
• If the machine was originally equipped with a 
catalytic converter and this is broken, a new 
catalytic converter must be installed after 
removing the old one. 
• Always get a specialist to adjust the carburettor 
if necessary. 
• Clean the air filter according to the instructions 
given (see user instructions). 
GGP reserves the right to make alterations to the product 
without prior notification.  
						

							EC conformity declaration
1.Category
5.VibrationLawnmower with petrol engine
V301
1. 13-2715 + 13-2940
2. 13-2716 + 13-2940
< 0.5 m/s
2
< 2.5 m/s2
(2.Type
3.Item no
GGP Sweden AB
P.O. Box 1006
SE-573 28  Tranås
Sweden8.Make Mountfield
9.Cutting width1-2. 85 cm
3-4. 92 cm10.Serial numberSee label on chassis
6A.Guaranteed sound power level
(L
WA)100 dB(A)11. Engine
MakeBriggs & Stratton
21A907 Model
12.Rotation speed3200 rpm
6B.Measured sound power level99 dB(A)
7.Notified body
ITS Testing & 
Certification Ltd
Notified Body repre-
sentative 0359 4.Manufacturer
This product conforms to
- Electromagnetic Compatibility Directive 89/336/EEC 
- Machinery Directive 98/37/EEC with special reference to 
appendix 1 of the directive regarding essential health and 
safety requirements in conjunction with manufacturing
- Noise Emission Directive 2000/14/EC
This product has been developed and manufactured in 
conformance with the following standards:
- EN 836, EN 292-2, EN 1033, EN ISO 3767, EN ISO 
14982
Managing Director Mats Antonsson
Issued in Tranås 2004-02-07
3. 13-2715 + 13-2929
4. 13-2716 + 13-2929
Manufactured by GGP Sweden AB