Ryobi Lawn Mower M48 Pro User Guide

Operators manual  
M48 Pro M53 S Pro  
Please read the operator’s manual carefully and make sure you  
understand the instructions before using the machine.  
English  
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CONTENTS  
Contents  
KEY TO SYMBOLS  
Key to symbols .............................................................  
Steps before using a new lawn mower ........................  
CONTENTS  
2
2
Contents ......................................................................  
SAFETY INSTRUCTIONS  
3
Personal protection ......................................................  
Machines safety equipment ........................................  
4
4
Checking, maintaining and servicing the machines  
safety equipment ..........................................................  
5
6
8
General safety precautions ..........................................  
General working instructions .......................................  
WHAT IS WHAT?  
What is what on the lawn mower? M48 Pro.................. 10  
What is what on the lawn mower? M53 S Pro .............. 11  
ASSEMBLY  
Fitting the handlebar .................................................... 12  
Dismantling and assembling the cutter ........................ 12  
FUEL HANDLING  
Fuel .............................................................................. 13  
STARTING AND STOPPING  
Starting and stopping ................................................... 14  
MAINTENANCE  
Maintenance ................................................................ 16  
Air filter ......................................................................... 16  
Spark plug .................................................................... 16  
Muffler .......................................................................... 16  
Cutter ........................................................................... 17  
Changing the oil ........................................................... 17  
Lubrication of the cutting height adjustment ................ 17  
Drive and gearbox ........................................................ 18  
Daily maintenance ....................................................... 18  
Weekly maintenance .................................................... 18  
Monthly maintenance ................................................... 18  
TECHNICAL DATA  
Technical data .............................................................. 19  
EC-declaration of conformity ........................................ 20  
English – 3  
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SAFETY INSTRUCTIONS  
Engine brake handle  
Personal protection  
WARNING!You must use personal  
protection whenever you use the machine.  
!
Vibration damping system  
Hearing protection  
Gloves must be worn when required, for example when  
fitting, inspecting or cleaning cutting attachments.  
Muffler  
Always wear heavy, long pants. Do not wear shorts,  
sandals or go barefoot.  
Cutting equipment  
Cutting cover and protective cover  
On lawn mower M53 S Pro there is a protective cover  
mounted over the drive's gearbox.  
Wear sturdy, non-slip boots or shoes.  
The protective cover is designed to reduce the risk of crush  
injuries and to catch a broken drive belt.  
Generally clothes should be close-fitting without restricting  
your freedom of movement.  
The cutting cover is designed to reduce vibration and to  
reduce the risk of cuts.  
Machine s safety equipment  
Engine brake handle  
This section describes the machines safety equipment, its  
purpose, and how checks and maintenance should be carried  
out to ensure that it operates correctly. See the ”What is  
what?” section to locate where this equipment is positioned  
on your machine.  
The engine brake is designed to stop the engine. When the  
grip on the engine brake handle is released the engine should  
stop.  
WARNING! Never use a machine that has  
faulty safety equipment! Carry out the  
inspection, maintenance and service  
routines listed in this section.  
!
On lawn mower M53 S Pro the engine brake handle should  
also disengage the drive.  
Cutting cover and protective cover  
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SAFETY INSTRUCTIONS  
Vibration damping system  
Checking,maintaining and servicing  
Your machine is equipped with a vibration damping system  
that is designed to minimize vibration and make operation  
easier.  
the machine s safety equipment  
The handlebar system's steel tube and the cutting cover are  
designed to minimise the vibrations from the engine.  
This model also has a vibration damper fitted on the  
handlebar unit to further reduce vibrations.  
WARNING! All servicing and repair work on  
the machine requires special training.This is  
!
especially true of the machine s safety  
equipment. If your machine fails any of the  
checks described below you must contact  
your service agent.When you buy any of our  
products we guarantee the availability of  
professional repairs and service. If the  
retailer who sells your machine is not a  
servicing dealer, ask him for the address of  
your nearest service agent.  
The machines vibration damping system reduces the transfer  
of vibration between the engine unit/cutting equipment and  
the machines handle unit.  
Checking the cutting cover and protective  
cover  
WARNING! Overexposure to vibration can  
lead to circulatory damage or nerve damage  
in people who have impaired circulation.  
Contact your doctor if you experience  
symptoms of overexposure to vibration.  
These symptoms include numbness, loss of  
feeling, tingling, pricking, pain, loss of  
strength, changes in skin colour or  
condition.These symptoms normally appear  
in the fingers, hands or wrists.  
!
Make sure the cutting cover is not damaged and that there are  
no visible defects such as cracks.  
Check that the protective cover is undamaged and that it is  
properly secured.  
Muffler  
The muffler is designed to keep noise levels to a minimum  
and to direct exhaust fumes away from the user.  
Checking the brake trigger  
Place the lawn mower on firm, flat surface and start it. Make  
sure that the cutter cannot come into contact with the ground  
or other objects. See the instructions under the heading Start  
and stop.  
Apply full throttle and then release the brake handle.  
WARNING! The exhaust fumes from the  
engine are hot and may contain sparks  
which can start a fire. Never start the  
machine indoors or near combustible  
material!  
!
In areas with a hot, dry climate there is a high risk of fires.  
These areas are sometimes controlled by legislation and  
requirements that among other things the muffler must be  
equipped with an approved type of spark arrestor mesh.  
The engine brake should always be adjusted so that the  
engine stops within 3 seconds.  
On lawn mower M53 S Pro the engine brake handle should  
also disengage the drive. Start the machine and engage the  
drive by moving the clutch lever towards you.  
For mufflers it is very important that you follow the instructions  
on checking, maintaining and servicing your machine.  
Apply full throttle and then release the brake handle. The  
engine should stop and the drive should disengage.  
WARNING! The muffler gets very hot in use  
and remains so for a short time afterwards.  
!
Do not touch the muffler if it is hot!  
English – 5  
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SAFETY INSTRUCTIONS  
The washer and cup spring should always be replaced when  
changing the cutter or cutter bracket.  
Vibration damping system  
Check regularly that the vibration damping element is free  
from cracks.  
WARNING! Never use a machine with faulty  
safety equipment.The machine’s safety  
equipment must be checked and maintained  
as described in this section. If your machine  
fails any of these checks contact your  
service agent to get it repaired.  
!
The handlebar system's steel tube and the cutting cover are  
designed to minimise the vibrations from the engine. Make  
sure the cutting cover is not damaged and that there are no  
visible defects such as cracks.  
General safety precautions  
A lawn mower is only designed to mow lawns. The only  
accessories you can use with this engine unit are the  
cutters we recommend in the Technical data chapter.  
Muffler  
Never use the machine if you are tired, if you have drunk  
alcohol, or if you are taking medication that could affect  
your vision, your judgement or your co-ordination.  
Never use a machine that has a faulty muffler.  
Regularly check that the muffler is securely attached to the  
machine.  
Cutting equipment  
WARNING! Running an engine in a confined  
This section describes how to choose and maintain your  
cutting equipment in order to:  
or badly ventilated area can result in death  
due to asphyxiation or carbon monoxide  
poisoning.  
!
Reduces machine vibration.  
Obtain maximum cutting performance.  
Extend the life of cutting equipment.  
You must use personal protection whenever you use the  
machine.See the instructions under the heading Personal  
protection.  
Make sure the cutter does not hit foreign objects such as  
stones, roots or the like. This can make the cutter dull and  
bend the engine shaft.Always ensure the cutter is well ground  
and balanced correctly. See also instructions under the  
heading Maintenance.  
Never use a machine that has been modified in any way  
from its original specification.  
Never use any accessories other than those recommended in  
this manual. See instructions under the headings Cutting  
equipment and Technical data.  
Check the cutting attachment for damage or cracks. A  
damaged cutting attachment should always be replaced.  
WARNING! A faulty cutting attachment may  
increase the risk of accidents.  
!
Also check that the cutter bolt is undamaged and that the  
engine shaft is not bent.  
Never use a machine that is faulty. Carry out the checks,  
maintenance and service instructions described in this  
manual. Some maintenance and service measures must  
be carried out by trained and qualified specialists. See  
instructions under the heading Maintenance.  
6 – English  
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SAFETY INSTRUCTIONS  
Before use:  
Fuel safety  
(Refuelling/Storage.)  
WARNING! Fuel and fuel vapour are highly  
inflammable.Take care when handling fuel  
and engine oil. Bear in mind the risk of fire,  
explosion and inhaling fumes.  
!
Never refuel the machine while the engine is running.  
Always ensure there is adequate ventilation when  
refuelling and filling oil.  
1
Check that the engine brake works correctly and is  
undamaged. See the instructions under the heading  
Checking the braking effect.  
Move the machine at least 3 m from the refuelling point  
before starting it.  
2
3
4
5
6
7
Check that all handles and controls are undamaged and  
free of oil.  
Check that the anti vibration system works and is not  
damaged.  
Check that the muffler is securely attached and not  
damaged.  
Check that all parts of the lawn mower are tightened  
correctly and that they are not damaged or missing.  
Check that the cutter is undamaged and not cracked.  
Replace the cutter if necessary.  
Never start the machine:  
Clean the air filter. Replace if necessary.  
1
2
3
If you have spilt fuel or engine oil on the machine.Wipe  
off the spill and allow the remaining fuel to evaporate.  
Starting  
If you spill fuel or engine oil on yourself or your clothes.  
Change your clothes.  
WARNING! Long-term inhalation of the  
engine's exhaust fumes can represent a  
health hazard.  
If the machine is leaking fuel.Check regularly for leaks  
from the fuel cap and fuel lines.  
!
Transport and storage  
Never start a lawn mower unless the cutters and all covers  
are fitted correctly.  
The fuel and engine oil tanks should be emptied before  
longer periods of storage or when transporting the lawn  
mower. Ask where you can dispose of surplus fuel and  
engine oil at your local petrol station.  
Never start the machine indoors. Exhaust fumes can be  
dangerous if inhaled.  
Observe your surroundings and make sure that there is no  
risk of people or animals coming into contact with the  
cutting equipment.  
Always store the lawn mower and fuel so that any leakage  
or vapours do not risk coming into contact with sparks or  
naked flames. For example, electrical machines, electric  
motors, relays/switches, boilers, or the like.  
Always store fuel in an approved container designed for  
that purpose.  
Place the lawn mower on firm, flat surface and start it.  
Make sure that the cutter cannot come into contact with  
the ground or other objects.  
Never twist the starter cord around your hand.  
See the instructions under the heading Start and stop.  
English – 7  
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SAFETY INSTRUCTIONS  
The brake handle must never be permanently anchored in  
handle when the machine is running.  
General working instructions  
WARNING! This section describes basic  
safety precautions for working with the lawn  
mower.This information is never a  
!
substitute for professional skills and  
experience. If you get into a situation where  
you feel unsure about how to progress, stop  
and seek expert advice. Contact your dealer,  
service agent or an experienced lawn mower  
user. Avoid all usage which you consider to  
be beyond your capability  
Follow the instructions above, but do not use a lawn mower in  
a situation where you cannot call for help in case of an  
accident.  
Basic mowing technique  
Basic safety rules  
WARNING! Make sure that your hands and  
feet do not come near the cutting  
attachment when the engine is running.  
Look around you:  
!
-
To ensure that people, animals or other things cannot  
affect your control of the machine.  
General  
-
To make sure that none of the above might come into  
contact with the cutting equipment.  
Mowing slopes can be dangerous. Do not use the lawn  
mower on very steep slopes.  
Branches, twigs, stones, etc. should be removed from the  
lawn before you start to mow. Make sure the cutter does  
not hit foreign objects such as stones, roots or the like.  
This can make the cutter dull and bend the engine shaft.  
The lawn mower should not be used on inclines greater  
than 15 degrees. Inclines that are too great can result in  
fuel leakage  
Never lift up the lawn mower or carry it around when the  
engine is running. If you must lift the lawn mower, first  
switch off the engine and disconnect the ignition lead from  
the spark plug.  
On sloping ground you should work along the slope. It is  
much easier to work along a slope than it is to work up and  
down it.  
Branches, twigs, stones, etc. should be removed from the  
lawn before you start to mow.  
Do not use the machine in bad weather, such as dense  
fog, heavy rain, strong wind, intense cold, etc. Working in  
bad weather is tiring and often brings added risks, such as  
icy ground.  
Never lift up the lawn mower or carry it around when the  
engine is running. If you must lift the lawn mower, first  
switch off the engine and disconnect the ignition lead from  
the spark plug.  
Make sure you can move and stand safely.Check the area  
around you for possible obstacles (roots, rocks, branches,  
ditches, etc.) in case you have to move suddenly. Take  
great care when working on sloping ground.  
Make sure the cutter does not hit foreign objects such as  
stones, roots or the like.This can make the cutter dull and  
bend the engine shaft. A bent axle gives imbalance and  
heavy vibration, which results in a great risk of the cutter  
becoming loose.  
The lawn mower should not be used on inclines greater  
than 15 degrees. Inclines that are too great can result in  
fuel leakage  
The engine should be switched off when moving over  
ground that is not to be mowed. For example, gravel  
paths, stone, shingle, asphalt, etc.  
If any foreign object is hit or if vibrations occur stop the  
machine immediately. Disconnect the HT lead from the  
spark plug. Check that the machine is not damaged.  
Repair any damage.  
Never mow more than 1/3 of the length of the grass. This  
especially applies during dry periods. Mow first with the  
cutting height set high.Then check the result and lower to  
an appropriate height. If the grass is really long, drive  
slowly and mow twice if necessary.  
8 – English  
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SAFETY INSTRUCTIONS  
Never run with the machine when it is running.You should  
always walk with the lawn mower.  
To raise the cutting height move the lever to the left and  
then backward.  
Cutting height  
Shut down the engine before changing the cutting height.  
The cutting height adjustment is spring assisted. The cutting  
height can be adjusted in five different steps.  
Do not set the cutting height too low as there is a risk that the  
cutters might hit slopes with unevenness.  
Do not set the cutting height too low as there is a risk that the  
cutters might hit slopes with unevenness.  
Adjusting the cutting height  
Shut down the engine before changing the cutting height.  
Set the cutting height using the cutting height control on the  
right-hand side of the lawn mower.  
On lawn mowers with the type designation M48 Pro, proceed  
as follows:  
To raise the cutting height move the lever to the left and  
then forward.  
To lower the cutting height move the lever to the left and  
then backward.  
On lawn mowers with the type designation M53 S Pro,  
proceed as follows:  
To lower the cutting height move the lever to the left and  
then forward.  
English – 9  
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WHAT IS WHAT?  
What is what on the lawn mower?  
M48 Pro  
10 Lower handlebar  
11 Oil tank  
1
2
3
4
5
6
7
8
9
Handle / handlebar  
12 Fuel tap  
Vibration damper  
Engine brake handle  
Starter handle  
13 Air filter  
14 Cutting cover  
15 Cutter/cutting equipment  
16 Cutter bolt  
Throttle control/choke control  
Cutting height control  
Fuel tank  
17 Cup spring  
18 Cutter bracket  
19 Engine shaft  
20 Operators manual  
Muffler  
Spark plug  
10 – English  
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WHAT IS WHAT?  
2
1
19  
20  
12  
3
13  
4
21  
11  
6
5
23  
22  
14  
15  
16  
18  
7
24  
17  
8
9
10  
What is what on the lawn mower?  
M53 S Pro  
12 Lower handlebar  
13 Oil tank  
1
2
3
4
5
6
7
8
9
Handle / handlebar  
Vibration damper  
Engine brake handle  
Throttle control/choke control  
Starter handle  
14 Fuel tap  
15 Air filter  
16 Cutting cover  
17 Drive belt  
18 Gear housing  
19 Cutter/cutting equipment  
20 Cutter bolt  
Clutch lever  
Cutting height control  
Fuel tank  
21 Cup spring  
Muffler  
22 Cutter bracket  
23 Engine shaft  
24 Operators manual  
10 Protective cover  
11 Spark plug  
English – 11  
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ASSEMBLY  
Always empty the fuel tank before you place the lawn mower  
on its side.  
Fitting the handlebar  
Take care not to damage the cables and wires when you fold  
up the handlebar.  
Dismantling  
Unscrew the bolt holding the cutter.  
M48 Pro  
Lift up the handlebar until the handlebar's upper tubular  
construction comes directly opposite to the handlebar's lower  
section. Tighten the knob correctly.  
Remove bolt, washer and cup spring.  
Remove the cutter.  
Assembly  
M53 S Pro  
Position the cutter so that the cutting edge faces in the  
direction of rotation.  
Fold up the upper section of the handlebar by:  
1
Fold in the engine brake handle towards the handlebar.  
2
Lift up the handlebar until the handlebar's upper tubular  
construction comes directly opposite to the handlebar's  
lower section. Tighten the knob correctly.  
Fit the cup spring, make sure it centres correctly on the  
engine shaft.  
Fit the washer and tighten the bolt correctly. The bolt  
should be tightened with a torque of 45-60 Nm.  
Dismantling and assembling the  
cutter  
WARNING! Always wear heavy-duty gloves  
when servicing and maintaining the cutting  
equipment.The cutters are very sharp and  
cuts can occur very easily.  
!
The ignition lead should always be removed from the spark  
plug before repair, cleaning or maintenance work.  
12 – English  
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FUEL HANDLING  
Only use recommended engine oil. See the Technical data  
section.  
Fuel  
Fuelling  
WARNING! Always ensure there is adequate  
ventilation when handling fuel.  
!
WARNING!Taking the following precautions,  
will lessen the risk of fire:  
Petrol  
!
Use good quality unleaded or leaded petrol.  
Use fuel with a low octane grade.  
Do not smoke or place hot objects near fuel.  
Always shut off the engine before refuelling.  
If the machine is not used for some time the fuel tank  
should be emptied and cleaned.  
When refuelling, open the fuel cap slowly so  
that any excess pressure is released gently.  
Tighten the fuel cap carefully after refuelling.  
Engine oil  
Always move the machine away from the  
refuelling area before starting.  
Check the oil level before starting the lawn mower. A too low  
oil level can cause serious damage to the engine.  
Always remove the ignition lead from the spark plug before  
refuelling.  
For the best result and function use HUSQVARNA four-  
stroke oil.  
If HUSQVARNA four-stroke oil is not available, you may  
use another four-stroke oil of good quality. Contact your  
dealer when selecting oil. In general SAE 30 is  
recommended.  
Never use oil intended for two-stroke engines.  
Check the oil level before starting the lawn mower. A too low  
oil level can cause serious damage to the engine.  
Clean around the fuel cap. Clean the fuel and oil tank  
regularly. The fuel filter should be changed at least once a  
year. Contamination in the tanks causes malfunction.  
Oil level  
Always move the machine about 3 metres from the refuelling  
position before starting.  
The lawn mower should stand on flat ground when you check  
the oil level. Ensure the ignition lead has been removed from  
the spark plug before you open the oil filler cap.  
Unscrew the oil filler cap and check the oil level on the dipstick  
fitted to the cover.  
The oil filler cap must be completely screwed down to give a  
correct picture of the oil level.  
If the oil level is low, fill using engine oil up to the upper level  
on the dipstick.  
English – 13  
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STARTING AND STOPPING  
Starting  
Starting and stopping  
On the M53 S Pro model disengage the drive on the wheel by  
moving the clutch lever forward.  
WARNING! Note the following before  
starting:  
!
Do not start a lawn mower unless the cutter  
and all covers are fitted correctly. Otherwise  
the cutter could come loose and cause  
personal injuries.  
Pull the engine brake handle against the upper handlebar  
with your left hand.  
Always move the machine away from the  
refuelling area before starting.  
Place the machine on a flat surface. Ensure  
the cutting attachment cannot come into  
contact with any object.  
Grip the starter handle, slowly pull out the cord with your right  
hand until you feel some resistance (the starter pawls grip),  
now quickly and powerfully pull the cord.  
On the M53 S Pro model  
disengage the drive on the  
wheel by moving the clutch  
lever forward.  
Never twist the starter cord around your hand.  
Keep people and animals well away from the  
working area.  
Cold engine  
Ensure the ignition lead sits correctly on the spark plug.  
Disengage the choke position with the throttle control when  
the engine is warm.  
Starting: Open the fuel tap.  
CAUTION! Do not pull the starter cord all the way out and do  
not let go of the starter handle when the cord is fully extended.  
This can damage the machine.  
Choke: Set the throttle control in the choke position.  
Warm engine  
Use the same starting procedure as for a cold engine, but do  
not set the throttle control in the choke position.  
14 – English  
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STARTING AND STOPPING  
Drive  
The model M53 S Pro is a self-propelled machine with the  
drive on the front wheels.  
To use the drive on the wheel pull the clutch lever towards  
you.  
Stopping  
Set the throttle control in the idling position.  
Stop the engine by releasing the engine brake handle.  
On model M53 S Pro the drive is also disengaged when you  
release the engine brake handle.  
Close the fuel tap.  
English – 15  
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MAINTENANCE  
When reassembling, make sure that the filter completely  
seals against the filter holder.  
Maintenance  
WARNING! Make sure the cutting  
attachment has stopped before cleaning,  
carrying out repairs or an inspection.  
Disconnect the HT lead from the spark plug.  
!
Spark plug  
Air filter  
WARNING! The muffler gets very hot in use  
and remains so for a short time afterwards.  
Do not touch the muffler if it is hot!  
!
The air filter must be regularly cleaned to remove dust and dirt  
in order to avoid:  
If the machine is low on power, difficult to start or runs poorly  
at idle speed: always check the spark plug first before taking  
any further action. If the spark plug is dirty, clean it and check  
that the electrode gap is 0.7-0.8 mm. The spark plug should  
be replaced after about a month in operation or earlier if  
necessary.  
Carburettor malfunctions  
Starting problems  
Loss of engine power  
Unnecessary wear to engine parts.  
Excessive fuel consumption.  
Clean the air filter daily, or more often in demanding  
conditions.  
The air filter is dismantled once the air filter cover has been  
lifted off. Press in the catches on the top of the air filter cover  
and lower the cover.  
CAUTION! Always use the recommended spark plug type!  
Use of the wrong spark plug can damage the piston/cylinder.  
Muffler  
The muffler is designed to reduce the noise level and to direct  
the exhaust gases away from the operator. The exhaust  
gases are hot and can contain sparks, which may cause fire  
if directed against dry and combustible material.  
Remove the air filter and check that it is undamaged.Replace  
with a new air filter if you believe it to be defective.  
Regularly check that the muffler is securely attached to the  
machine.  
Clean the filter by knocking the filter carefully against a hard  
surface and blowing with compressed air from inside. Never  
brush the dirt away. Replace the air filter if it is very dirty.  
Never use a machine that has a faulty muffler.  
An air filter that has been in use for a long time cannot be  
cleaned completely.The filter must therefore be replaced with  
a new one at regular intervals. A damaged air filter must  
always be replaced.  
16 – English  
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MAINTENANCE  
Unscrew the oil filler cap.  
Cutter  
WARNING! Always wear heavy-duty gloves  
when repairing the cutting attachment.The  
blades are very sharp and can easily cause  
cuts.  
!
Drain the oil by tipping the engine so that the oil runs out  
through the filler pipe.  
It is important to have a sharp and correctly balanced cutter.  
Loosen the bolt holding the cutter and leave the cutter at a  
service workshop at least once a year for grinding and  
balancing. An appropriate time to do this is after the mowing  
season has finished.  
Ask where you can dispose of surplus engine oil at your  
local petrol station.  
Fill with new engine oil of a good quality.See theTechnical  
data section.  
Check the oil level with the dipstick on the oil filler cap.The  
oil filler cap must be completely screwed down to give a  
correct picture of the oil level.  
If the cutter or cutter bracket need to be changed you must  
replace the cutter bolt, washer and cup spring at the same  
time.  
If the oil level is low, fill using engine oil up to the upper  
level on the dipstick.  
The bolt should be tightened with a torque of 45-60 Nm when  
you fit the cutter again. See instructions under the heading  
Assembly.  
If the cutter hits foreign objects such as stones, roots or the  
like the cutter will slip against the cutter bracket. This may  
mean that the contact surface of the cutter bracket appears  
slightly worn, which is completely normal. This is a safety  
device, which reduces the risk of the engine shaft becoming  
bent.  
Screw on the oil filler cap.  
Lubrication of the cutting height  
adjustment  
Changing the oil  
The mechanical parts of the cutting height system should be  
lubricated regularly (once a week). Lubricate the cutting  
height system with a few drops of oil.  
The engine oil should be changed each year and every 25  
working hours.  
When changing the oil proceed as follows::  
Disconnect the HT lead from the spark plug.  
Empty the fuel tank  
Close the fuel tap.  
English – 17  
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MAINTENANCE  
Drive and gearbox  
Weekly maintenance  
1
2
3
4
M53 S Pro  
Ensure the wheels and wheel axles are clean and free from  
leaves, grass, etc. It is also important to keep clean around  
the drive gearbox.  
Remove the protective cover by unscrewing the screws.  
1
2
3
Change the engine oil.  
Lubricate the cutting height system  
Clean the spark plug. Check that the electrode gap is 0.7-  
0.8 mm.  
4
Clean the cooling fins on the cylinder.  
Now guide the protective cover out under the stay and  
over the drive axle.  
Monthly maintenance  
Clean the gearbox with a brush. Also check that the drive  
belt and belt pulley are undamaged, for example, no  
cracks.  
1
Check that drive belt is not damaged and is not visibly  
defective.  
2
3
Clean the gearbox.  
Check the fuel filter and the fuel hose. Replace if  
necessary.  
4
5
Clean the inside of the fuel tank.  
Lubricate the drive control.  
Below you will find some general maintenance  
instructions.  
Daily maintenance  
1
2
3
Check that the engine brake handle works safely.  
Brush leaves, grass and the like off of the lawn mower.  
Clean the air intake on the starter. Check the starter and  
starter cord.  
4
5
6
7
Check the oil level.  
Clean the air filter. Replace if necessary.  
Check that nuts and screws are tight.  
Check the cutting attachment. Never use blades that are  
dull, cracked or damaged.  
18 – English  
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TECHNICAL DATA  
Technical data  
M48 Pro  
M53 S Pro  
Engine  
3
Cylinder displacement, cm  
Cylinder bore, mm  
Stroke, mm  
160  
64  
160  
64  
50  
50  
Power, kW  
4,1  
4,1  
Ignition system  
Type of ignition system  
Spark plug  
Transistor  
Transistor  
NGK - BPR6ES  
0,7 - 0,8  
NGK - BPR6ES  
0,7 - 0,8  
Electrode gap, mm  
Fuel and lubrication system  
Fuel tank capacity, litre  
Oil tank capacity, litre  
1,1  
1,1  
0,55  
0,55  
Service classification SG - SJ; Service classification SG - SJ;  
Engine oil  
SAE 10W -30  
SAE 10W -30  
Weight  
Lawn mower with empty tanks, kg  
Noise emissions  
30,3  
35,4  
(see note 1)  
Sound power level, measured dB(A)  
94  
95  
96  
97  
Sound power level, guaranteed L  
Vibration levels  
dB(A)  
WA  
(see note 2)  
2
Handle left, m/s  
3,6  
3,5  
3,5  
3,8  
2
Handle right, m/s  
Cutting equipment  
Cutting system  
BioClip  
BioClip  
28-65  
53  
The cutting height can be adjusted in five different steps, mm. 28-65  
Cutting width, cm  
Cutter  
48  
Fixed  
Fixed  
Drive  
Speed, km/h  
----  
4,5  
Note 1: Noise emissions in the environment measured as sound power (L ) in conformity with EC directive 2000/14/EC.  
WA  
Note 2: Vibrations measured according to EN836 : 1997/A2:2001  
English – 19  
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TECHNICAL DATA  
EC-declaration of conformity  
(Applies to Europe only)  
Höörs Plåt, Box 76, SE-243 22 Höör, Sweden, tel: +46-413-29600, declares under sole responsibility that the lawn mowers  
Husqvarna M48 Pro and M53 S Pro from the serial numbers 030600001 and onwards comply with the requirements of the  
COUNCILS DIRECTIVE:  
of May 3, 1989 ”relating to electromagnetic compatibility” 89/336/EEC, and applicable supplements.  
of May 8, 2000 ”relating to the noise emissions in the environment” 2000/14/EC.  
of June 22, 1998 ”relating to machinery” 98/37/EC.  
For information relating to noise emissions, see the chapter Technical data.  
The following standards have been applied: EN836:1997  
Notified body:0404, SMP Svensk Maskinprovning AB, Fyrisborgsgatan 3, SE-754 50 Uppsala, Sweden, has compiled confirmity  
assessment Report No. 01/901/020 - M48 Pro, 01/901/022 - M53 S Pro in accordance with Directive 2000/14/EC, Annex VI.  
Höör January 3, 2003  
Lennart Molin, Development manager  
20 – English  
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1140249-26  
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2003-12-17  
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We hope you find the links below useful. For further gardening information visit  
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