Mac allister MLMP450HP40 User manual

Petrol Lawnmower
125 cc
MLMP450HP40
EAN: 3663602939528
WARNING: Read the instructions
before using the product
Original Instructions – MLMP450HP40 By MacAllister_GB_V03_20170930
Manufacturer:
3 Sheldon Square
London
W2 6PX
United Kingdom
Distributor: B&Q plc
Chandlers Ford, Hants,
SO53 3LE United Kingdom
www.diy.com
SFD Limited
Trade House, Mead Avenue
Yeovil
BA22 8RT, UK

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MLMP450HP40 By MacAllister MLMP450HP40 By MacAllister
Getting Started . . .
Safety information
Let’s
get started...
These instructions are for your safety. Please read through
them thoroughly before use and retain them for future
reference.
Getting Started... 02
Safety information 03
Your product 14
Before you start 17
Quick start 24
In more detail... 26
Product functions 27
Operation 31
Care and maintenance 36
Trouble shooting 40
Recycling and disposal 42
Guarantee 42
EC declaration of conformity 43
Safety warnings
Petrol powered lawnmowers safety warnings
IMPORTANT Read carefully before use.
Keep for future reference.
Training
1. Read the instructions carefully. Be familiar with the controls
and the proper use of the product.
2.
Never allow children or people unfamiliar with these
instructions to use the product. Local regulations can restrict
the age of the operator.
3.
Never mow while people, especially children, or pets are
nearby.
4.
Keep in mind that the operator or user is responsible for
accidents or hazards occurring to other people or their
property.
5.
The operators must receive proper training in the use,
adjustment and operation of the product, including prohibited
operations.
Preparation
1.
While mowing, always wear substantial footwear and long
trousers. Do not operate the product when barefoot or wearing
open sandals.
2.
Thoroughly inspect the area where the product is to be used
and remove all objects which can be thrown by the product.
3. WARNING
•
• Refuel outdoors only and do not smoke while refuelling.

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MLMP450HP40 By MacAllister MLMP450HP40 By MacAllister
Safety information
Getting Started . . .
Getting Started . . .
Safety information
• Add fuel before starting the engine. Never remove the cap
of the fuel tank or add petrol while the engine is running or
when the engine is hot.
•
If petrol is spilled, do not attempt to start the engine but
move the product away from the area of spillage and avoid
creating any source of ignition until petrol vapours have
dissipated.
• Replace all fuel tank and container caps securely.
4. Replace faulty silencers.
5. Before using, always visually inspect to see that the cutting
devices, cutting device bolts and cutter assembly are not
worn or damaged. Replace worn or damaged cutting devices
and bolts in sets to preserve balance.
6.
On multi-bladed machines, take care as rotating one cutting
device can cause other cutting devices to rotate.
7. CAUTION! Do not touch rotating cutting device.
8. Engine brake (brake bar (2)): Use the brake bar (2) to stop
the engine. When you release the bar the engine and the
blade stop automatically in a few second. To mow, hold the
bar in the working position. Before you start to mow, check
the brake bar (2) several times to be sure that it is working
properly. Ensure that the brake wire (4) can be smoothly
operated (i.e. is not catching or kinking in any way).
Operation
1. dangerous carbon monoxide fumes can collect.
2.
3. Do not operate the product while being tired, ill or under
4. Avoid operating the product in wet grass, where feasible.
5. Always be sure of your footing on slopes.
6. Walk, never run.
7. Mow across the face of slopes, never up and down.
8.
Exercise extreme caution when changing direction on slopes.
9. Do not mow excessively steep slopes near drop-offs, ditches
or embankments.
10.
Avoid using the product in bad weather conditions especially
when there is a risk of lightning.
11.
Use extreme caution when reversing or pulling the product
towards you.
12. Stop the cutting device(s) if the product has to be tilted for
transportation when crossing surfaces other than grass,
and when transporting the product to and from the area to
be mowed.
13.
Never operate the product with defective guards, or without
in place.
14. Do not change the engine governor settings or overspeed
the engine.
15. Do not alter or tamper with any sealed adjustments for the
engine speed control.
16.
Do not tamper or disable any lawnmower safety systems
or features.
17. Ensure and regularly check that all starting interlocks and
operator presence controls are properly functioning.
18.
Stop the product according to instructions in this manual
before leaving the operator’s position and park it.
19. Start the engine or switch on the engine carefully according
to instructions and with feet well away from the cutting
device(s).

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MLMP450HP40 By MacAllister MLMP450HP40 By MacAllister
Safety information
Getting Started . . .
Getting Started . . .
Safety information
20. Do not tilt the product when starting the engine or switching
on the engine, except if the product has to be tilted for
starting. In this case, do not tilt it more than absolutely
necessary and lift only the part which is away from the
operator.
21.
Do not start the engine when standing in front of the
discharge chute.
22.
Do not put hands or feet near or under rotating parts. Keep
clear of the discharge opening at all times.
23.
Never pick up or carry a product while the engine is running.
24. Stop the engine and disconnect the spark plug connector,
make sure that all moving parts have come to a complete
• before clearing blockages or unclogging chute,
• before checking, cleaning or working on the product,
•
after striking a foreign object. Inspect the product for
damage and make repairs before restarting and operating
the product,
•
if the product starts to vibrate abnormally (check
immediately).
25. Stop the engine and disconnect the spark plug connector,
make sure that all moving parts have come to a complete
• whenever you leave the product,
• before refuelling.
26.
Reduce the throttle setting during engine shut down and,
if the engine is provided with a shut-off valve, turn the fuel
off at the conclusion of mowing.
27.
when the engine is hot.
28. Never carelessly touch the product, you can burn yourself.
While the product is in operation or shortly thereafter, its
parts such as the exhaust pipe, engine, and other surfaces
are extremely hot! Pay attention to the markings on the
product.
29.
Make sure that the air intake of the combustion engine is
clear. Keep the air intake free of dust, dirt particles, gases
and fumes. Keep hands and feet away from the cutting
device at all times and especially when switching on the
engine.
Maintenance and storage
1.
Follow the maintenance and repair instructions for this
Never change the preset rotary speed or the engine and
product settings. Information about maintenance and repair
is provided in this user manual.
2. Keep all nuts, bolts and screws tight to be sure the product
is in safe working condition.
3.
Improper maintenance or using non genuine parts may
lead to malfunction/failure of the product. Many accidents
are caused by poorly maintained products.
4.
Never store the product with petrol in the tank inside a
5. Allow the engine to cool before storing in any enclosure.
6.
Keep the engine, silencer and petrol storage area free of
7. Check the grass catcher frequently for wear or deterioration.
8. Replace worn or damaged parts for safety.
9.
If the fuel tank has to be drained, this should be done
outdoors.

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MLMP450HP40 By MacAllister MLMP450HP40 By MacAllister
Safety information
Getting Started . . .
Getting Started . . .
Safety information
10. Wear strong work gloves when removing and re-assembling
the cutting device.
11. Always replace worn or faulty parts with the genuine parts.
Only use the recommended blades and spare parts by the
manufacturer.
Fuel handling
1.
Always switch the product off and let it cool down, before
you are refuelling the product. Do not refuel the product, if
2.
not spill any fuel on the product or its exhaust system. There
is a risk of ignition. However, if fuel should be spilled, then
you must remove it carefully from all parts of the product.
Any residue which may be present must be completely
removed, before the product is operated!
3.
Exhaust gases and fuel fumes are noxious. Fuel fumes can
ignite. Never use the product in environments where there
is a risk of explosion.
4.
Never breathe in any fuel fumes, when you are refuelling
as basements or sheds. There is a risk of poisoning and
explosion!
5. Avoid skin contact with petrol.
6. Do not eat or drink, while you are refuelling the product. If
you have swallowed petrol or oil, or if petrol or oil has got
into your eyes, then seek medical advice immediately.
7. sure that it is properly closed.
8.
Vibration and noise reduction
To reduce the impact of noise and vibration emission, limit the
time of operation, use low-vibration and low-noise operating
modes as well as wear personal protective equipment.
Take the following points into account to minimize the vibration
and noise exposure risks:
1.
Only use the product as intended by its design and these
instructions.
2.
Ensure that the product is in good condition and well
maintained.
3.
Use correct attachments for the product and ensure they
in good condition.
4. Keep tight grip on the handles/gripping surface.
5.
Maintain this product in accordance with these instructions
and keep it well lubricated (where appropriate).
6. Plan your work schedule to spread any high vibration tool
use across a longer period of time.
Emergency
Familiarise yourself with the use of this product by means
of this instruction manual. Memorise the safety directions
and follow them to the letter. This will help to prevent risks
and hazards.
1.
Always be alert when using this product, so that you
can recognize and handle risks early. Fast intervention
can prevent serious injury and damage to property.
2.
Stop the engine and disconnect the spark plug connector
if there are malfunctions. Have the product checked by
you operate it again.

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MLMP450HP40 By MacAllister MLMP450HP40 By MacAllister
Safety information
Getting Started . . .
Getting Started . . .
Safety information
3.
spark plug connector.
immediately if the product switch is no longer accessible.
WARNING! Never use water to extinguish a product
extinguishing agents! We recommend that you keep a
Residual risks
Even if you are operating this product in accordance
with all the safety requirements, potential risks of injury
and damage remain. The following dangers can arise in
connection with the structure and design of this product:
1.
Health defects resulting from vibration emission if the product
is being used over long periods of time or not adequately
managed and properly maintained.
2.
Injuries and damage to property due to broken application
tools or the sudden impact of hidden objects during use.
3. objects.
4. Burns, if touching hot surfaces.
WARNING! This product produces an electromagnetic
field during operation! This field may under some
circumstances interfere with active or passive medical
implants! To reduce the risk of serious or fatal injury, we
recommend persons with medical implants to consult
their doctor and the medical implant manufacturer before
operating this product!
Symbols
the following symbols and abbreviations. Familiarise yourself with them to reduce hazards
like personal injuries and damage to property.
kW Kilowatt kg Kilogram
cm3Cubic centimetre dB(A) Decibel (A-rated)
/min or min-1 Per minute l Litre
mm Millimetre m/s2Metres per second squared
Lock / to tighten or secure.
Unlock / to loosen.
mm.yyyy
Manufacturing date code, year of manufacturing (yyyy) and month
of manufacturing (mm)
Note / Remark.
Caution / Warning.
Read the instruction manual.
Wear hearing protection.
Wear eye protection.
Wear respiratory protection.
Wear protective gloves.
Wear protective, slip-resistant footwear.

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MLMP450HP40 By MacAllister MLMP450HP40 By MacAllister
Safety information
Getting Started . . .
Getting Started . . .
Safety information
Do not expose the product to rain or wet conditions.
Do not smoke in the work area, around the product and in the vicinity
Hot surface, do not touch! High temperatures on the product’s surfaces
and structural parts that could cause burns, if they are touched. The
product can also stay hot for a longer period of time after operation!
This product produces noxious exhaust fumes. If the product is used
improperly, these fumes can lead to poisoning, a loss of consciousness
or death!
Noxious exhaust fumes; do not operate or start the product in indoor
rooms!
Only refuel unleaded petrol!
Add engine oil
Switch the product off and disconnect the spark plug connector
before assembly, cleaning, adjustments, maintenance, storage and
transportation.
Mow across the face of slopes, never up and down.
Inspect the area where the product is to be used and remove all objects
which can be thrown by the product.
If objects are hidden while operating stop the engine and remove the
object.
Keep hands and feet away from sharp rotating parts – danger of injury!
When cleaning, repairing, or inspecting, make certain the cutting device
and all mowing parts have stopped. Disconnect the spark plug cap, and
keep the cap away from the plug to prevent accidental starting.
Keep hands and feet away.
Cutting device continues to rotate after the product is switched off. Wait
until all machine components have completely stopped before touching
the product.
Pay special attention when working on the cutting device!
Objects thrown by the product could hit the user or other bystanders.
Always ensure that other people and pets remain at a safe distance
from the product when it is in operation. In general, children must not
come near the area where the product is.
Release the brake bar to stop the engine and blade.
Engine manual start; recoil starter
Guaranteed sound power level value in dB
MLMP450HP40
Designation of the tool (M_Macallister Brand; LM_Lawn mower; P_Petrol
Power; HP_Hand push)
The product complies with the applicable European directives and an
evaluation method of conformity for these directives was done.

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MLMP450HP40 By MacAllister MLMP450HP40 By MacAllister
Getting Started . . .
Getting Started . . .
Your productYour product
Your product 24
23a
23b
23c
23d
23
23e
23f
25
27a
27
1. Handle
2. Brake bar
3. Upper handle bar
4. Brake wire
5. Lower handle bar
6. Locking knob
7. Wire clip
8. Fuel tank
a. Cap
9. Air vents
10. Primer
11.
a. Filter *
b. Cover *
c. Fastener*
12. Spark plug connector
13. Wheel
14.
15. Oil tank cap
16. Lever for cutting height adjustment
17. Handle support
18. Mounting set (x 2)
a. Bolt
b. Washer
c. Spring washer
d. Cap nut
19.
20. Grass catcher
a. Handle
b. Hatch
21. Rope guide
22. Recoil starter handle
23. Cutting device (blade)
a. Spindle
b. Pin
c. Ring
d. Support
e.
f. Hex bolt
24. Rear discharge chute
25. Spark plug wrench
26. Briggs & Stratton (B&S)
operator´s manual *
27. Mulching insert
NOTE: Parts marked with *are not shown in this overview. Please refer to the
respective section in the instruction manual.
5
12
3
4
6
7
22a
88a
9
10
11
12
13
14
15
16
20
17
18a
19
21
22
18b18c18d

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MLMP450HP40 By MacAllister MLMP450HP40 By MacAllister
Getting Started . . .
Getting Started . . .
Before you startYour product
General
> Dimensions: approx.1250 x 505 x 985mm
> Machine mass with empty tanks and in normal approx. 24.2 kg
> Fuel tank capacity: 800 ml (cm3)
> Petrol type: #95, unleaded
> Engine oil capacity: 470 ml (cm3)
> Engine oil type: 4-stroke engine oil
(e. g. SAE 10W-30)
> 397 g/kWh
> Fuel consumption at max. engine power: 1.15 l/h
> Cutting width: 40cm
> Cutting height: 25-75 mm
> Grass catcher volume: 50 l
Engine
> Engine model: B&S450E, 08P5
> Engine type: air cooled, 4-stroke engine
> Engine displacement: 125 cm3
> Maximum operating engine speed
(rotational frequency): 2800 min-1
> Nominal power: 1.7 kW
> Spark plug type: QC12YC
> Spark plug gap: 0.51 mm
> Sound level:
> Sound pressure level at operator’s position LpA:85.1 dB(A)
> Uncertainty K: 3 dB(A)
> Sound power level LWA:93.5 dB(A)
> Uncertainty K: 1.91 dB(A)
> Guaranteed sound power level LWA
(acc. to 2000/14/EC amended by 2005/88/EC): 96 dB(A)
Vibration level
> Hand arm vibration ahw:6.12 m/s2
> Uncertainty K: 1.5 m/s2
The sound values have been determined according to noise test code given in
EN ISO 5395-2, using the basic standards ISO 3744 and ISO 11094.
Wear hearing protection, especially when sound pressure is over 80 dB(A).
The declared vibration value has been measured in accordance with a standard test
method (according to EN ISO 5395-1 and EN ISO 5395-2) and may be used for comparing
one product with another. The declared vibration value may also be used to evaluate
the exposure for the user caused by vibration in advance.
WARNING! Depending on the actual use of the product the vibration values
can differ from the declared total! Adopt proper measures to protect yourself
against vibration exposures. Take the whole work process including times the
product is running under no load or switched off into consideration.
Proper measures include among others regular maintenance and care of the
product and application tools, keeping hands warm, periodical breaks and
proper planning of work processes.
Unpacking
NOTE: The product is heavy, ask another person for assistance if required.
1.
2. Remove all packing materials and shipping devices, if applicable.
3. parts are missing or show damage do not use the product but contact your dealer.
Using an incomplete or damaged product represents a hazard to people and property.
4. Ensure that you have all the accessories and tools needed for assembly and operation.
This also includes suitable personal protective equipment.
WARNING! The product and the packaging are not children’s toys! Children
must not play with plastic bags, sheets and small parts! There is a danger of
choking and suffocation!

18a
17
18b18c
18d
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MLMP450HP40 By MacAllister MLMP450HP40 By MacAllister
Getting Started . . .
Getting Started . . .
Before you start Before you start
You will need
(items not supplied)
> Suitable personal protective equipment
>> Petrol and engine oil
> Fuel collecting container
> Oil collecting container
> Lubrication oil/grease
(items supplied)
> 1x Spark plug wrench (25)
> 1x Briggs & Stratton (B&S)
operator’s manual (26)
> 1x Mulching insert (27)
Assembly
WARNING! The product must be fully assembled before operation! Do not
use a product that is only partly assembled or assembled with damaged parts!
Follow the assembly instructions step-by-step and use the pictures provided
as a visual guide to easily assemble the product!
Disconnect the spark plug connector (12) from the spark plug! Reconnect it
after assembly.
NOTE: Take care of small parts that are removed during assembly or when
making adjustments. Keep them secure to avoid loss.
Handle bars
1. Remove the mounting sets (18) from the handle supports (17) and keep them handy
(Fig. 1).
Fig. 1
2. Ensure that the levers (6a) are released and unfold the upper (3) and lower handle
bar (5) (Fig. 2).
Fig. 2
3. Make sure the wires (4) run on the upper side of the handle bars (5).
4. Remove the covers from the lower handle bar (5).
5. Make sure the holes in the lower handle bar are aligned with those in the supports
(Fig. 3).
Fig. 3
6. Fix the lower handle bar (5) with the mounting sets (18) to the handle supports (17)
(Fig. 4).
Fig. 4
3
6a
54
5
17
18d 18c 18b
18a
17
5

36a
5
7
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MLMP450HP40 By MacAllister MLMP450HP40 By MacAllister
Getting Started . . .
Getting Started . . .
Before you start Before you start
7. Unfold the upper handle bar (3) and use the locking knob (6a)
3positions for height adjustment of the handle (Fig. 5).
Fig. 5
8. Fix the wires (4) with the wire clip (7) to the lower handle bar (5) (Fig. 6).
Fig. 6
Grass catcher
1. Remove the covers from the hooks on the grass catcher (20).
2.
(19) hold it in position and align the hooks on the grass
catcher (20) with the rod to hang it onto it (Fig. 7).
Fig. 7
Fuel and engine oil
This product is equipped with a 4-stroke engine. Before operation it is necessary to add
proper fuel and engine oil separately.
WARNING! This product contains an instruction manual of the engine. Service
the engine with proper petrol and engine oil as the instructed in the separate
engine handbook (26).
It is important to read and understand these instructions of the engine and
the equipment.
SAVE THESE ORIGINAL INSTRUCTIONS FOR FUTURE REFERENCE.
1. sheet under the product.
2.
20
19

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MLMP450HP40 By MacAllister MLMP450HP40 By MacAllister
Getting Started . . .
Getting Started . . .
Getting Started . . .
Getting Started . . .
Before you start
WARNING!
3. Always dispose of fuel, used oil and objects contaminated with them in accordance
with local regulations.
Fuel
NOTE: This product is not supplied with fuel! Before operating this product it
with petrol!
1. Always use clean, fresh unleaded petrol. Purchase fuel in quantities that can be
used within 30 days.
2. Avoid getting dirt, dust or water in the fuel tank.
3. Unscrew and remove the fuel tank cap (8a) (Fig. 8).
4. Add correct fuel into the tank. Leave a minimum 5mm of space between the top of
the fuel and the inside edge of the tank to allow for expansion (Fig. 9).
8a
15 5 mm
Fig. 8Fig. 9
NOTE:
you use petrol which has been kept for more than 30 days.
Towards the end of the season, it is advisable to put only as much fuel in the
tank as you need for each use, since it should be completely used up before
storing the product.
Always empty the fuel tank when storing the product for over 30 days.
5. Wipe any spilled fuel with a soft cloth and reattach the fuel tank cap (8a).
Engine oil
WARNING! This product is not supplied with oil. However, for manufacturing
reasons it is possible that a small quantity may be in the engine! Before operating
handbook (26)!
1. Unscrew and remove the oil tank cap (15).
2. Gradually add good-quality engine oil. Allow the oil to settle.
3.
min”
and “max” marking, indicated by the two arrows. Add more oil if necessary. Do not
10).
Fig. 10
4. Wipe spilled oil with a soft cloth and reattach the oil tank cap (15).
Before you start

rope guide
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MLMP450HP40 By MacAllister MLMP450HP40 By MacAllister
Getting Started . . .
Getting Started . . .
Quick startQuick start
Getting Started . . .
Operating controls Set up
Assemble Adjust Add fuel Add oil
Start
Press primer
3to 5times Pull and hold brake bar
Pull recoil starter
sharply, repeat until
engine starts Operate
Stopping
Release brake bar Empty fuel tank Clean and maintain Store

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MLMP450HP40 By MacAllister MLMP450HP40 By MacAllister
In more detail . . .
In more detail . . .
In more
detail...
Product functions 27
Operation 31
Care and maintenance 36
Trouble shooting 40
Recycling and disposal 42
Guarantee 42
EC declaration of conformity 43
Intended use
This petrol lawnmower MLMP450HP40 is designated with a power output of 1.7 kW.
1. The product is intended for mowing grass in domestic gardens only. It must not be
used to mow unusually high, dry or wet grass, e. g. pasture grass; for shredding
leaves or mulching.
2. operation and to observe all the instructions therein.
3. This product is intended for private domestic use only, not for any commercial trade
use. It must not be used for any purposes other than those described.
Brake bar
1. Pull the brake bar (2) towards the handle (1) and hold it in position when starting
the engine. Keep it squeezed during operation (Fig. 11).
2. Release the brake bar ( 2 ) to stop the engine.
1
2
Fig. 11
Recoil starter
The recoil starter handle (22) is positioned at the rear of the engine.
1. Pull the brake bar (2) towards the handle (1).
Product functions

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MLMP450HP40 By MacAllister MLMP450HP40 By MacAllister
In more detail . . .
In more detail . . .
2. Slowly pull on the recoil starter handle (22) (Fig. 12
(21) on the right hand side of the upper handle (3) during operation (Fig. 12). Do not
remove the rope from the rope guide when starting the engine.
Fig. 12
WARNING! Never twist the starter cord around your hand! Only pull on the
handle!
WARNING! Do not suddenly release the recoil starter handle! Allow the rope
to return slowly and in a controlled manner each time it is pulled!
Grass catcher
Indicator
The grass catcher (20) is equipped with an indicator (20b)that indicates the volume
during operation.
1. When the hatch (20b) is opened during operation, the grass catcher (20) has enough
space to collect grass.
2. When the hatch (20b) is closed during operation, the grass catcher (20) is full and
must be emptied.
Fig. 13
Emptying
Empty the grass catcher (20) frequently during use. Do not wait until it is completely full.
NOTE: A full grass catcher will reduce the performance of this product.
1. (19) and pull the grass catcher (20) off the rod.
2. Remove the grass clippings from the rear discharge chute (24) into the grass catcher
(20). Use a proper tool such as a brush.
WARNING! Never use your hands or feet to remove grass clippings from the
discharge chute!
3. Remove the grass catcher (20).
4. Empty the grass clippings onto a compost heap.
5. (20) to the product.
WARNING! Do not attempt to use the product without the grass catcher attached
Switch the engine off and wait that the blade had come to a complete stop
before removing the grass catcher!
Product functionsProduct functions
1
2
3
21
20b
20

19
24
27a
27
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MLMP450HP40 By MacAllister MLMP450HP40 By MacAllister
In more detail . . .
In more detail . . .
Mulching insert
For mulching work use the mulching insert (27).
1. (19), hold it in position and insert the mulching insert
(27) into the rear discharge chute (24) (Fig. 14). Ensure the unlock button (27a)
snaps in place.
2. Press the unlock button (27a) down to release and remove the mulching insert (27)
(Fig. 15).
Fig. 14 Fig. 15
Cutting height adjustment
Adjust the cutting height according to the needs of your lawn. The cutting height depends
on the kind of lawn and its actual height. When mowing high grass, start with the maximum
cutting height and make a second cut with lower cutting height.
1. Pull the lever (16) towards the wheel (13), then move it forward or backward to adjust
the cutting height (Fig. 16).
16
13
Fig. 16
WARNING! Ensure that the lever engages between two of the prongs!
Switch the engine off and wait that the blade had come to a complete stop
before adjusting the cutting height!
Primer
The primer (10) (11). Use the primer (10) when starting
the product with cold engine (Fig. 17)
11
10
Fig. 17
General operation
1. Check the product as well as accessories for damage before each use. Do not use
the product if it is damaged or shows wear.
2.
3.
4. Always push the product on its handle. Use the self-propelling function if required.
Keep the handle dry and free from lubricant to ensure safe support.
5. Ensure that the air vents are always unobstructed and clear. Clean them if necessary
with a soft brush. Blocked air vents may lead to overheating and damage the product.
6. Switch the product off immediately if you are disturbed while working by other people
entering the working area. Always let the product come to complete stop before
averting.
7. Do not overwork yourself. Take regular breaks to ensure you can concentrate on
the work and have full control over the product.
OperationProduct functions

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MLMP450HP40 By MacAllister MLMP450HP40 By MacAllister
In more detail . . .
In more detail . . .
Starting/Stopping
WARNING!
Clean the underside of the deck!
Keep yourself ready! Start the engine carefully according to instructions. Keep
your feet well away from the blade!
Do not tilt the product when starting the engine.
Start
1. Press the primer (10) 18, step 1).
2. Stand behind the handle (1).
3. Pull the brake bar (2) against the handle (1) and hold it in position with one hand
(Fig. 18, step 2).
4. Pull the recoil starter handle (22) lightly until you feel resistance then pull it rapidly.
Do it again until the engine starts (Fig. 18, step 3).
5. When you are ready to mow, hold the brake bar (2) with both hands with the handle
(1). Pushing the mower forward and the mower begins mowing.
10
1
2
22
Fig. 18
WARNING! The starting position should be as described in the instruction
behind the lever. DO NOT start the engine standing beside the deck as (Fig B).
Fig. AFig. B
Stopping
Release the brake bar (2) to stop the engine and blade (Fig. 19).
Fig. 19
Mowing
1. Make sure that the lawn is clear of stones, sticks, wire or other objects that could
damage the product or its engine.
2. Do not cut wet grass because it tends to stick to the underbody of the product,
preventing the proper discharge of grass clippings, and it could also cause you to
slip and fall.
3. Never cut off more than one-third of the total length of the grass for a healthy lawn.
In the autumn, lawns should only be cut as long as there is growth.
4. Slowly push the product forward. You may want to use the self- propelled function
for assistance.
OperationOperation

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5. Mow in slight overlapping rows. The most effective pattern for mowing lawns is
straight lines along one of the sides. This will keep the rows even and ensures that
all the lawn is cut without missing any spots (Fig. 20).
Fig. 20
6. cut a row or two around the circumference of the bed.
7. Pay special attention when changing direction.
8. Empty the grass catcher regularly.
WARNING! Extensive vibration of the product during operation is an indication
of damage! Switch the engine off. The product should be promptly inspected
and repaired!
9. Prepare the product according to required application.
Function Grass catcher Mulching insert
Grass collection attached removed
Mulching removed inserted
Grass collection
1. Remove the mulching insert (27) and attach the grass catcher (24).
2. Empty the grass catcher regularly.
Mulching
NOTE: Mulching means cutting and returning the grass clippings to the lawn in
onto the lawn. Under normal conditions, the mulched grass will biodegrade
quickly to provide nutrients to the lawn.
1. Insert the mulching insert (27) into the rear discharge chute (24).
2. Avoid mowing when the grass is wet from rain or dew. Wet grass may form clumps
which interfere with the mulching action and reduce runtime. The best time to mow
grass is late afternoon when the grass is dry and the newly cut area will not be
exposed to direct sunlight.
3. Set the cutting height to about one third of the grass blade length, ideally no more
than 35 mm at one time for best mulching performance. If the lawn is overgrown,
it may be necessary to increase the cutting height to reduce the pushing effort and
prevent the engine overloading. For extremely heavy mulching, it is advisable to
make narrower cuts and mow slowly.
4. Keep the housing free of built-up grass for best performance. From time to time
switch the product off and wait for the blade to come to a complete stop. Then
turn the product on its side. Using an object such as a wooden stick, remove any
accumulation of grass in the blade area. Be careful of the sharp edges of the blade.
Clean often after cutting new grass and after every use.
NOTE: Sometimes fuel would leak from the fuel cap and carburettor. Keep the
fuel tank at top position to avoid it.
5. Certain types of grass or grass conditions may require an area to be mulched a
second time to fully disperse the grass across the lawn. When cutting a second time,
the cutting pattern in any way that would cause you to mow downhill.
6. Change your cutting pattern from week to week. This will help prevent matting and
graining of the lawn.
After use
1. Switch the product off, disconnect the spark plug connector and let it cool down.
2. Check, clean and store the product as described below.
OperationOperation

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The golden rules for care
WARNING!Always switch the product off, disconnect the spark plug connector
and let the product cool down before performing inspection, maintenance and
cleaning work!
DO NOT touch a rotating blade.
1. Keep the product clean. Remove debris from it after each use and before storage.
2. Regular and proper cleaning will help ensure safe use and prolong the life of the
product.
3. Inspect the product before each use for worn and damaged parts. Do not operate
WARNING! Only perform repairs and maintenance work according to these
General cleaning
1. Clean the product with a slightly damp cloth and mild soap. Use a brush for areas
that are hard to reach.
2. In particular clean the air vents (9) after every use with a cloth and brush.
3. Remove stubborn dirt with high pressure air (max. 3 bar).
NOTE: Do not use chemical, alkaline, abrasive or other aggressive detergents
or disinfectants to clean this product as they might be harmful to its surfaces.
4. Check for worn or damaged parts. Replace worn parts as necessary or contact an
authorised service centre for repair before using the product again.
Maintenance
Before and after each use, check the product and accessories (such as application
tools) for wear and damage. If required, exchange them for new ones as described in
this instruction manual. Observe the technical requirements.
Underbody and cutting device
WARNING! Wear protective gloves when working on the cutting device and
close to it! Use proper tools to remove debris, e. g. a wooden stick! Never
use your bare hands!
Always use original spare parts for replacement. The cutting device must be
DAYE 26300100401. Do not attach
any other type of cutting device!
The replacement of the cutting device should be done by an experienced user!
Rework or sharpening blades is not recommended unless it is done by a repair
NOTE: We strongly recommend jacking the product up when performing
inspection and work on the cutting device.Avoid tilting the product in order to
prevent fuel and oil leakages.
1. Keep the underbody and cutting device (23) clean and free of debris. Remove
clippings from the discharge chute (24).
2. Check all nuts and bolts periodically for tightness before operation.After prolonged
use, especially in sandy soil conditions, the cutting device will become worn and lose
device should be replaced.
3. Keep the cutting device (23) sharp to ensure a good cutting performance. Replace a
worn or damaged cutting device with a new one of the same type or have it sharpened
4. Loosen the hex bolt (23f) anti-clockwise using a suitable wrench and remove it
(23e), cutting device (23), support (23d), ring (23c)
and pin (23b) (Fig. 21).
5. Replace the cutting device with a new one of the same type. Slide the pin (23b)
into the slot on the spindle (23a) (23c), support (23d), locking
(23e) and hex bolt (23f). Tighten the hex bolt clockwise with 40 N m min,
50 N m max. to ensure safe operation of your product.
Care and maintenanceCare and maintenance

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NOTE: Replace this cutting device after 50 hours mowing or2years whichever
is sooner regardless of condition. If the cutting device is cracked or damaged,
you must immediately replace it with a new one.
6.
Lubricate the cutting device (23) after each use to prolong the life span of cutting device
and product. Apply light machine oil along the edge of the cutting device (Fig. 21).
23a
23b 23c
23d 23
23e 23f
Fig. 21
Grass catcher
1. Inspect the grass catcher (20)
2. Clean the grass catcher (20) after operation using water and mild soap.
3. Let the grass catcher dry thoroughly before storing to avoid mildew.
Wires
Check the performance of the wires (4)
adjust it if necessary.
WARNING! Do not use the product with defective or loose wires!
Engine
NOTE:An instruction manual of the engine is provided with your product. Follow
the engine handbook for maintenance and care for of engine.
Care and maintenance
Refer to the B&S operator’s manual for maintaining below parts:
>> Spark plug
> Fuel
> Engine oil
> Carburettor
>> Valve play
Spare parts/Replacement parts
The following parts of this product may be replaced by the consumer. Spare parts are
available at an authorised dealer or through our customer service.
Description
Blade DAYE 26300100401
Repair
This product does not contain any parts that can be repaired by the consumer. Contact an
Storage
1. Switch the product off and disconnect the spark plug connector.
2. Clean the product as described above.
3. Store the product and its accessories in a dry, frost-free place.
4. Always store the product in a place that is inaccessible to children. The ideal storage
temperature is between 10 °C and 30 °C.
5. We recommend using the original package for storage or covering the product with
a suitable cloth or enclosure to protect it against dust.
6. Empty the tank if you are not going to use the product for an extended period of time
(more than 30 days) and before storing it for the winter.
Transportation
1. Switch the product off and disconnect the spark plug connector.
2. Adjust the height to the highest position as described above.
3. Attach transportation guards, if applicable.
4. Always transport the product by its handle (1).
5. Protect the product from any heavy impact or strong vibrations which may occur
during transportation in vehicles.
6. Secure the product to prevent it from slipping or falling over, loss of fuel, damage
and injury.
Care and maintenance