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909 52371 User Manual

Made by: 909
Type: User Manual
Category: Lawn Mower
Pages: 18
Size: 0.60 MB

 

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140CC 4 STROKE

PETROL  

LAWN MOWER

User Manual

www.909.com

Read all safety warnings and all instructions 

thoroughly before operating this product.

 


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Contents

Pack contents /parts  

2

Intended use of the 140cc Petrol Lawn Mower  

2

Description of Symbols  

3

General safety instructions  

4

Safety rules for Petrol Lawn Mowers  

6

Additional Safety Warnings for Petrol Lawn Mowers     

11

Parts List  

12

Assembly  

14

Attaching the Lower Handles  

14

Attaching the Upper Handles  

15

Assembly of the 60L Hard Catcher  

16

Attaching the 60L Hard Catcher  

16

Adding and Checking the oil  

17

Fuelling  

18

Adjusting the Cutting Height  

19

Starting the engine  

19

Stopping the engine / Emergency Stopping   

21

Engine tipping/ Poor Engine Performance  

22

Maintenance / Replacing the Blades  

23

Air cleaner Maintenance  

25

Spark plug  

26

Storage and Transporting  

27

Service Support / Accessories and after Sales Parts  

29

Troubleshooting  

30

Specifications  

31

 


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Pack contents / parts

Congratulations on the purchase of your 909® 140cc 4 Stroke  
Petrol Lawn Mower.  When you open your packaging, first remove all 
items and check there are no parts damaged or missing. If you find  
anything wrong, do not operate the product until the parts have been 
replaced or the fault has been rectified. Failure to do so could result in  
serious personal injury.
Intended use of the 140cc Petrol Lawn Mower
NOTE:
 This product is for private domestic DIY use only.
It is not suitable for commercial, industrial or trade use.
This product is suitable for private home use i.e for use in home and  
gardening environments, for the application of mowing.
IMPORTANT INFORMATION.
NOTE:
  This is a 4 stroke Lawn Mower.  
The engine MUST be filled with 470ml of SAE 10W-30  
BEFORE starting. Fresh unleaded fuel must be used in this unit.  
Do NOT use Ethanol based fuels.  Do NOT mix oil with fuel.
NOTE: First time users or inexperienced operators pay particular  
attention to the operation of the Lawn Mower, including details of  
starting and stopping and correct use of the Lawn Mower on pages  
20-21, as well as the maintenance instructions on pages 23 - 26.
Contents of carton

2

3

Description of symbols

The rating plate on your lawn mower may show symbols. These represent 
important information about the product or instructions on its use.

 Conforms to relevant standards for electrical safety  

and electromagnetic compatibility.
Wear hearing protection.  Wear eye protection. 

Wear breathing protection.

Wear safety footwear.

Wear safety gloves.

Warning.

Read these instructions for use carefully. 

Use at a distance of at least 15m from other people.

Thrown objects can cause severe injury. 

 Explosive material.

  Extremely hot surface. Do not touch a hot muffler, gear box or  

cylinder, you may get burned. These parts get extremely hot from 

operation and remain hot for a short time after the unit is turned off.

 Before carrying out any operation stop the engine  
and disconnect the spark plug

  

    Risk of hand and feet injuries

  Noise label rating 69dbBA (taken at 7.5 metres)  

You must wear ear protection at all times.

NOISE dBA

69

1 x Lawn Mower
1 x 60L Hard Catcher
1 x Spark Plug Wrench

1 x Cable Clip
1 x Instruction Manual

 


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General safety warnings 

Safety instructions

 

WARNING   Read and understand all instructions. Failure to follow 

all instructions listed below may result in electric shock, fire and/or 

serious injury. The term “power tool” in all of the warnings below refers  

 to your mains-operated (corded) power tool, garden power tool,  

battery-operated (cordless) power tool or your petrol operated  

garden tool.

 Save these instructions 
 Work area 

•   Ensure the area to be mowed is clear and free of debris, rocks, gravel, 

garden furniture etc.

•   Keep work area clean and well lit. Cluttered and dark areas invite 

accidents.

•   Do not operate power tools in explosive atmospheres, such as in the 

presence of flammable liquids, gases, or dust. Power tools create sparks 

which may ignite the dust or fumes. 

•   Ensure all animals, children and bystanders are at least 20m away while 

operating this lawn mower. Distractions can cause you to lose control.

 Personal safety 

•   Stay alert, watch what you are doing and use common sense when 

operating a power tool. Do not use a power tool while you are tired 

or under the influence of drugs, alcohol, or medication. A moment of 

inattention while operating power tools may result in serious personal 

injury.

•   Use safety equipment. Always wear eye protection. Safety equipment 

such as a dust mask, non-skid safety shoes, hard hat, or hearing 

protection used for appropriate conditions will reduce personal injuries.

•   Remove any adjusting key or wrench before turning the tool on.  

A wrench or a key that is left attached to a rotating part of the power 

tool may result in personal injury.

•   Do not overreach. Keep proper footing and balance at all times.  

This enables better control of the power tool in unexpected situations.

•   Dress properly.  Do not wear loose clothing or jewellery. Keep your hair, 

clothing and gloves away from moving parts. Loose clothes, jewellery or 

long hair can be caught in moving parts.

•   If devices are provided for the connection of dust extraction and 

collection facilities ensure that these are connected and properly used. 

Use of these devices can reduce dust-related hazards.

 Power tool use and care 

•   Do not force the power tool. Use the correct power tool for your 

application.  The correct power tool will do the job better and safer at 

the rate for which it was designed.

•    Do not use the power tool if the switch does not turn it on and off. Any 

power tool that cannot be controlled with the switch is dangerous and 

must be repaired.

•   Turn tool off completely before making any adjustments, changing 

accessories, or storing power tools. Such preventive safety measures 

reduce the risk of starting the power tool accidentally.

•   Store idle power tools out of the reach of children and do not allow 

persons unfamiliar with the power tool or these instructions to operate 

the power tool. Power tools are dangerous in the hands of untrained 

users.

•   Maintain power tools. Check for misalignment or binding of moving 

parts, breakage of parts and any other condition that may affect the 

power tool’s operation. If damaged, have the power tool repaired before 

use. Many accidents are caused by poorly maintained power tools.

•   Keep cutting tools sharp and clean. Properly maintained cutting tools 

with sharp cutting edges are less likely to bind and are easier to control.

•   Use the power tool, accessories and tool bits etc., in accordance with 

these instructions and in the manner intended for the particular type  

of power tool, taking into account the working conditions and the work 

to be performed. Use of the power tool for operations different from 

intended could result in a hazardous situation.

 Service 

•   Have your power tool serviced by a qualified repair personnel using 

only identical replacement parts. This will ensure that the safety of the 

power tool is maintained.

4

5

 


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General safety warnings 

Safety rules for Petrol Lawn Mowers
 Training  

•   Read the instructions carefully. Get familiar with the controls and proper 

use of the equipment. 

•   Only use the lawn mower for the purpose for which it was designed,  

i.e. for cutting and collecting grass. Any other use can be hazardous,  

causing damage to the machine.

•   Never allow children or people unfamiliar with these instructions to use 

the lawn mower. Local regulations may restrict the age of the operator.

•  Never use the lawn mower:
–   When people, especially children, or pets are nearby.
–    If the operator has taken medicine or substances that can affect his 

ability to react and concentrate.

•   Remember that the operator or user is responsible for accidents or 

hazards occurring to other people or their property.

 Preparation 

•   While mowing, always wear sturdy footwear and long trousers. Do not 

operate the equipment when barefoot or wearing open sandals.

•   Thoroughly inspect the area where the equipment is to be used and 

remove all objects which may be thrown by the machine or damage the 

cutter assembly and the engine (stones, sticks, metal wire, bones, etc.)

WARNING:  DANGER!  

Engine fuel is highly flammable:

–  Store fuel in containers specifically designed for this purpose.
–    Refuel using a funnel and outdoors only. Do not smoke while refuelling 

or whenever handling the fuel.

–    Add fuel before starting the engine. Never remove the cap of the fuel 

tank or add fuel while the engine is running or when the engine is hot.

–    If fuel is spilled, do not attempt to start the engine but move the 

machine away from the area of spillage and avoid creating any source  

of ignition until the fuel has evaporated and the vapour dispersed.

–   Replace all fuel tanks and containers caps securely.
•  Substitute faulty silencers.
•   Before use, always inspect the machine, especially the condition of the 

blades, and check that the screws and cutting assembly are not worn 

or damaged. Replace worn or damaged blades and screws in sets to 

preserve balance.

•   Discharge openings must be guarded at all times. Do not remove the 

discharge guard or hold it up while mowing. 

•   It is advisable to wear suitable eye protection when operating the 

mower.

Operation 

•   Do not operate the engine in a confined space where dangerous  

carbon monoxide fumes can collect.

•  Mow only in daylight or good artificial light.
•  If possible, avoid operating the equipment in wet grass.
•  Always be sure of your footing on slopes.
•   Walk, never run and do not allow yourself to be pulled along by the  

lawn mower.

•  Mow across the face of slopes, never up and down.
•  Exercise extreme caution when changing direction on slopes.
•  Do not mow on slopes of more than 20°.
•  Exercise extreme caution when pulling the lawn mower towards you.
•   Stop the blade if the lawn mower has to be tilted for transportation 

when crossing surfaces other than grass, and when transporting the 

lawn mower to and from the area to be mowed.

•   Never operate the lawn mower with defective guards, or without safety 

devices, such as the stoneguard and/or grass-catcher, in place.  

Replace if damaged.

•  Do not change the engine governor settings or over speed the engine.
•   On power-driven models, disengage the drive clutch before starting  

the engine.

6

7

 


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•   Start the engine carefully, following the instructions and keeping feet 

well away from the blade.

•    Do not tilt the lawn mower when starting the engine. 
  Start the engine on a flat surface that is free of obstacles and tall grass.
•   Do not put hands or feet near or under rotating parts. Keep clear of the 

discharge opening at all times.

•  Never pick up or carry a lawn mower while the engine is running.
•  Stop the engine and disconnect the spark plug wire:
–   Before carrying out any work underneath the cutting deck or before 

unclogging the chute;

–  Before checking, cleaning or working on lawn mower;
–   After striking a foreign object. Inspect the lawn mower for damage and 

make repairs before restarting and operating the lawn mower;

–   If the lawn mower starts to vibrate abnormally (find and remove the 

cause of the vibration immediately).

•  Stop the engine:
–  Whenever you leave the lawn mower unattended. 
–  Before refuelling.
–  Every time you remove or replace the grass-catcher.
•   When mowing, always keep to a safe distance from the rotating blade. 

This distance is the length of the handle.

•  Never cut grass while walking backwards. 
•   Stop the engine before pushing mower across gravel drives, walks or 

roads.

•   This machine is to be used exclusively for cutting natural grass.  

Never use the mower for other purposes. Any other utilization can 

involve danger for your safety and can involve damage to the mower.

•   The user is responsible for the safety of other people, animals and 

objects in the working area. Keep children and domestic animals at a 

safe distance while the mower is in use.

Maintenance and Storage

•   Keep all nuts, bolts and screws tight to be sure the equipment is in safe 

working condition. Regular maintenance is essential for safety and 

performance.

•   Never store the equipment with fuel in the tank inside a building where 

vapour may reach a flame or a spark or a source of extreme heat.

•  Allow the engine to cool before storing in an enclosed space.
•   To reduce the fire hazard, keep the engine, exhaust silencer, battery 

compartment and fuel storage area free of grass, leaves, or excessive 

grease. Do not leave containers with grass cuttings in rooms.

•   Check the stone-guard and grass-catcher frequently for wear and 

deterioration and replace if damaged.

•   If the fuel tank has to be drained, this should be done outdoors and 

when the engine is cool.

•  Wear strong work gloves when removing and reassembling the blade.
•  Check the blade’s balance after sharpening.
•   For reasons of safety, do not use the equipment with worn or damaged 

parts. Parts are to be replaced and not repaired. Parts that are not of the 

same quality can damage the equipment and be dangerous for your 

safety.

•  Whenever the machine is to be handled, transported or tilted you must:
–  wear strong working gloves;
–   grasp the machine at the points that offer a safe grip, taking account of 

the weight and its distribution.

•  Damaged blades and worn bolts are major hazards. 
•   Fuel goes off in about 3 - 4 months. If you find your mower does not 

start, try changing the fuel in the tank with newly purchased fresh 

unleaded fuel.  Do not use ethanol based fuels.

8

9

 


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Operation Safety Instructions

 WARNING:  Stop the engine and unplug the spark plug before any 

repairs or maintenance operations.

•  Check that all nuts, bolts and screws are well tightened before every use.
•   Before mowing ensure that the blade and the blade fixing screw are 

securely fastened. When the blade edges require re-sharpening,  

this must be done evenly on both sides to prevent any imbalance.  

If the blades are damaged, it must be replaced.

•  When mowing always wear long trousers and strong, covered footwear.
•   Do not run the engine in an enclosed and/or poorly ventilated area.  

The gas of the engine contains carbon monoxide, which is dangerous to 

your health.

•  Work only when there is sufficient light.
•  Do not use the lawn mower when it is raining or when the grass is wet.
•   Caution must be taken while mowing on slopes. Mow across the face of 

slopes, never down or up.

•  Turn off the engine if you must leave the lawn mower unattended.
•   Never lift the rear of the mower while starting the engine and never 

place your hands and feet underneath the deck while the engine is 

running.

•   If working on high grass, adjust the mowing height to reduce the friction 

and prevent over loading. The optimal mowing height should be 1/3 the 

height of the grass. It would affect the work efficiency of lawn mower if 

too much higher or lower.

•  Never change the rated speed of the engine in any way.
•  Never lift or carry the mower while the engine is running.
•  Stop the engine and remove the spark plug cover in these cases:
-   Before any operation under the deck.
-   Before any maintenance, repairing or checking operations.
-   Before carrying, lifting or removing the mower.
-   If you leave the mower unattended or change the cutting height.
-    After hitting a foreign object, stop the engine and check thoroughly the 

mower in order to see if it is damaged. Take the mower to an authorised 

service centre to carry out any repairs if necessary. 

-    If the mower vibrates in an abnormal way, take the mower to an 

authorised service centre. 

10

11

-    Check the bolts and nuts regularly. Bolts and nuts may vibrate loose  

over time. 

WARNING:   

Fuel is highly flammable. 

•  Keep fuel in a jerry can specially made for this purpose.
•   Fill the fuel tank with a funnel and outside. Do not smoke or use a mobile 

phone during this process. 

•   Fill with fuel and oil before starting the engine. Never open the cap of 

the fuel tank to add fuel while the engine is running or still hot.

•   Do not start the engine if there is spilt fuel on the mower or in the area 

surrounding. Take the mower away from the zone where fuel has been 

split and avoid any contact from a hot source as long as the split fuel is 

completely evaporated.

•  Tighten the fuel tank cap and jerry can cap tightly.

Additional Safety Warnings for Petrol Lawn Mowers

•    Never allow young children to operate power tools or equipment. 
•   Make sure children and pets stay indoors while you’re working.
•    Before starting up the lawn mower, walk the area. Relocate toys, hoses, 

rocks and sticks. Debris such as stones, wood chips and pieces of aged 

blades can be propelled at high speeds, which can cause a fatal accident.

•    Check lawn mower blades regularly. Look for damage, bends and 

dullness. Blades should be replaced every year or two, depending on 

usage.

•    Slow down and take care when mowing around corners, trees, 

shrubbery or other obstacles.

•    Leave the mower deflector chute in the manufacturer-set position.
•    Don’t modify equipment – it may affect your warranty as well as make 

the product unsafe.

•    When operating any power tools or equipment (no matter the size), 

wear closed-toe, slip-resistant shoes, safety glasses, strong gloves, a hat 

and ear protection. Cover your skin as much as possible.

•    Never underestimate the power of handheld equipment, especially 

chainsaws. Use the same amount of caution as you do for larger 

equipment.

•    Wait until the equipment has cooled completely before filling with fuel 

or attempting any repair or maintenance.

 


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                140cc 4 Stroke Petrol Lawn Mower 

AFTER SALES SUPPORT

e-mail: info@909.com

1800 909 909

MODEL: №. 52371 

(toll free)

AFTER SALES SUPPORT

(toll free)

140cc 4 Stroke Petrol Lawn Mower 

e-mail: info@909.com

1800 909 909

MODEL: №. 52371

12

13

30

29

Parts List

1.   Upper handle bar and handles
2.   Engine throttle control
3.   Engine throttle control cable
4.   Recoil Starter handle holder
5.   Upper handle locking lever (x 2)
6.   Lower handles
7.   60L hard catcher
8.   Lower handle locking knob (x 2)
9.   Cable holder clip (x 1)
10.   Lower handle mounting plate 

(with 3 height position)

11.  Catcher attachment tabs
12.  Rear discharge guard
13.  8 Height adjustment lever
14.  Rear wheels
15.  Recoil starter
16.  Fuel tank
17.  Fuel tank cap
18.  Engine
19.  Oil filler cap/dipstick
20.   Spark plug cover / Spark Plug 

(located under cover)

21.  Air filter
22.  Air filter cover
23.  2 x swing Blades
24. Blade mounting plate
25.  Blade bolt
26.  Outer flange

27.  Front wheels
28.  Nudge Bar
29.  Priming Bulb
30.  Spark Plug Wrench

27

19

15

10

13

14

6

7

5

4

11

21

24

25
26

23

23

2

3

9

5

8

28

20

22

18

17

12

1

16

 


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                140cc 4 Stroke Petrol Lawn Mower 

AFTER SALES SUPPORT

e-mail: info@909.com

1800 909 909

MODEL: №. 52371 

(toll free)

AFTER SALES SUPPORT

(toll free)

140cc 4 Stroke Petrol Lawn Mower 

e-mail: info@909.com

1800 909 909

MODEL: №. 52371

14

15

Assembly 

WARNING: Stop the engine and unplug the spark plug before any 

repairs or maintenance operations.
WARNING: DO NOT attempt to start this mower without first adding 

0.6L of SAE 10W-30 engine oil to the Engine. Refer to the oil chart on 

page 16 to confirm the correct oil for various conditions.
WARNING: Do Not attempt to start this mower without the mower 

first being FULLY assembled.
It is necessary to fit the lower handles (6), upper handle and bar (1), 

and the 60L hard catcher (7) to the mower before use.

Attaching the Lower Handles

NOTE:  When preparing for this assembly, slowly and carefully raise the 

handles without pulling or putting any strain on the cable. Ensure the cable 

is not tangled or crossing over.
1.   Remove the lower handle locking knobs (8) from the lower handle 

mounting plates (10). (Fig A)

2.   Position each of the lower handles (6) on the inside of the lower handle 

mounting plate (10),  and locate the circle hole on each end of the lower 

handles (6) onto the large locating pins (one each side) on the lower 

handle mounting plates (10) on each side. (Fig B)

3.   This mower has a 3 height adjustment for the positioning of the handles, 

with the lowest notch positioning the handle bars closer to the ground, 

and the highest notch raising the handle bars up towards the user. (Fig C)

4.   Once you have decided the positioning of the 

handles to suit your mowing height, locate the 

square hole up from the bottom of the lower 

handles (6), and position so they match the 

square notch on the lower handle mounting 

plates (10). (Fig D)

5.   Insert the screw through the lower handle 

square hole, then through the mounting plate 

(10), and secure into position by then screwing 

the lower handle locking knob (8) onto the 

screw on the external side of the  lower handle 

mounting plate (10). (Fig E)

6.   Secure the lower handle locking knob (8)  

until finger tight.

7.   Repeat on the opposite side ensuring both of 

the handle locking knobs are firm and secure.

Attaching the Upper Handles

With the lower handles in position, the upper 

handles and bar (1) can now be secured  

in position.
1.   When the upper handles (1) are in line with 

the lower handles (6) secure them in position 

by pulling the upper handle locking lever (5) 

towards the upper handle bar (1) and locking 

the handle in position (repeat other side). (Fig F)

  

NOTE: Tension on the upper handle locking 

levers can be adjusted by rotating the lever 

knob.

D.

C.

B.

A.

E.

F.

 


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                140cc 4 Stroke Petrol Lawn Mower 

AFTER SALES SUPPORT

e-mail: info@909.com

1800 909 909

MODEL: №. 52371 

(toll free)

AFTER SALES SUPPORT

(toll free)

140cc 4 Stroke Petrol Lawn Mower 

e-mail: info@909.com

1800 909 909

MODEL: №. 52371

16

17

2.   Using the cable holder clip (9) supplied, secure 

the engine throttle cable (3) to the lower handle 

(6) to ensure it is secure. (Fig G)

Assembly of the 60L Hard Catcher

The 60L hard catcher (7) is supplied in 2 sections.  

Locate the top half of the catcher on top of the 

bottom half. Interlock the upper and lower sections 

together in the matching slots - there are 3 slots on 

each side, and 3 slots at the rear of both the upper 

and lower halves of the 60L hard catcher (7). When 

correctly aligned, they will click into place. (Fig H)

Attaching the 60L Hard Catcher

   NOTE: Ensure the lawn mower engine is turned 

OFF when fitting or removing the catcher.

1.   Lift the rear discharge guard (12) in order to 

position the assembled 60L hard catcher (7).

   NOTE:  Do NOT ever start the lawn mower if the 

rear discharge guard does not fully return to the 

close position if the catcher is not fitted.

2.   With the rear discharge guard (12) raised,  align 

the 2 hooks (one on each side) onto the rear 

discharge chute with the 2 tabs (one on each 

side) on the 60L hard catcher (7).  

3.   When these are aligned, push the 60L hard 

catcher (7) in a downwards direction to secure 

the tabs onto the  hooks (Fig I).

4.   Release the rear discharge guard (12) to secure 

the 60L hard catcher (7) into place. (Fig J)

   NOTE: Always empty the catcher before it has 

reached maximum capacity, otherwise it will 

decrease the performance of the lawn mower.

   TIP:  Do not leave grass clippings in the catcher 

for extended periods of time.

G.

H.

I.

J.

Adding and Checking the oil

IMPORTANT: This lawn mower is packed with NO OIL in the engine. Prior to 

starting the engine, Oil MUST be added to the sump of the engine.
Failure to add sufficient oil will result in damage to the engine which is  

NOT covered under the warranty of the lawn mower.
On a new lawn mower, the engine needs to be filled with 470ml of SAE 10W-30 

engine oil. 
Each time the lawn mower is used, the oil level should be checked and if low, 

add sufficient oil to ensure the oil level is to the full mark on the dipstick.
1.   Position the lawn mower on a flat and level surface. Clean the area 

directly around the oil filler cap (19).

2.   Remove the oil filler cap / dipstick (19) by 

turning approximately half a turn in an anti 

clockwise direction and lift the cap outwards. 

Clean the oil dipstick (19) with a clean cloth, 

cleaning away any visual oil (Fig K).

3.  FOR A NEW LAWN MOWER, add 470ml of SAE 

10W-30 engine oil.

4.   Re-insert the oil dipstick and secure the oil filler 

cap (19) by turning approximately half a turn in 

a clockwise direction. 

5.  Again remove the oil dipstick (19) and check 

the oil level.  It should be at the top of the full 

indicator on the dipstick (Fig L).

6.  If low, add oil slowly into the engine oil fill.   

Do not overfill.  After adding oil, wait one  

minute and then recheck the oil level.

7.  Replace and tighten the oil filler cap / dipstick 

(19).  Always ensure the oil filler cap is firmly locked in place before the 

engine is started.

  

NOTE: Do not over fill with oil above the full indicator mark.

K.

L.

 


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                140cc 4 Stroke Petrol Lawn Mower 

AFTER SALES SUPPORT

e-mail: info@909.com

1800 909 909

MODEL: №. 52371 

(toll free)

AFTER SALES SUPPORT

(toll free)

140cc 4 Stroke Petrol Lawn Mower 

e-mail: info@909.com

1800 909 909

MODEL: №. 52371

18

19

Fuelling

IMPORTANT: Fuel goes off after about 3-4 months. If you find your lawn 

mower does not start, first change the fuel in the tank with newly purchased 

fresh unleaded fuel. Do not use ethanol based fuels.

WARNING. Do not refill fuel tank while engine is running  

or is hot.

•    Be careful not to admit dust, dirt, water or other foreign objects into the fuel.
•    Wipe off spilt fuel thoroughly before starting engine.
•    Ensure you DO NOT fuel the lawn mower in close proximity to any open 

flames, lit cigarettes, or hot objects.

1.   Unscrew the fuel tank cap (19) and pour fresh unleaded fuel into the tank 

with the aid of a funnel. (Fig M )

2.   Fill the tank to approximately 2.5 cm below 

the lowest portion of the neck to allow for fuel 

expansion. Be careful not to over fill or spill any 

fuel.   If this happens, wipe the spill with a  

clean rag.

3.   Start the engine at least 3 metres away from the 

area where the fuel tank has been filled in order 

to avoid the risk of fire.

M.

Adjusting the Cutting Height

WARNING:  Stop the engine and unplug the spark plug before any repairs 

or maintenance operations.
The mower has one lever to easily adjust the cutting height.  

There are 8 height settings.
NOTE: Always try to adjust the cutting height of the lawn mower while 

positioned on the area of grass you plan to mow.
It is recommended to start on a higher setting and mow a trial area of lawn 

before deciding on the final cutting height position.
1.    Stop the engine of the lawn mower before making a height adjustment. 

To increase the cutting height pull the height adjustment lever (13) 

outward towards the wheel, and move it up a notch, towards the rear  

of the lawn mower. (Fig N)

2.   To decrease the cutting height pull the height adjustment lever (13) 

outward towards the 

wheel,  and move it 

down a notch, towards 

the engine. (Fig O)

3.   After adjustment, 

ensure the lever is fully 

located in the selected 

notch.

Starting the engine

Take note of the following warnings before starting your lawn mower:
•    Never allow young children to operate power tools or equipment. 
•   Make sure children and pets stay indoors while you’re working.
•    Before starting up the lawn mower, walk the area. Relocate toys, hoses, 

rocks and sticks. Debris such as stones, wood chips and pieces of aged 

blades can be propelled at high speeds, which can cause a fatal accident.

•    Slow down and take care when mowing around corners, trees, shrubbery 

or other obstacles.

O.

N.

 


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                140cc 4 Stroke Petrol Lawn Mower 

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21

•    Wear closed-toe, slip-resistant shoes, safety glasses, strong gloves, a hat 

and ear protection. Cover your skin as much as possible. 

NOTE: Before starting the mower check the oil and fuel levels. The engine 

MUST be filled with 470ml of SAE 10W-30 BEFORE starting. Fresh unleaded 

fuel must be used in this unit. Do NOT use Ethanol based fuels. Do NOT mix 

oil with fuel.
Warranty will be void if the engine becomes faulty due to insufficient oil and 

fuel levels.
For starting, ensure the mower is set to the height setting so the blades are 

not resting deep into the grass.   

1.   Move  the  engine throttle control (2) to the “START “ position. (Fig P)
2. Depress the priming bulb (29) fully 3 times.
3.   Firmly hold the recoil starter (15) & pull slowly 

until resistance is felt, then pull rapidly. (Fig Q)

4.   Once the lawn mower has started and warmed 

up (approximately 20-30 seconds) move the 

throttle control (2) to the “RUN” position to 

increase the engine speed. (Fig R)

START

RUN

OFF

Move the engine 
throttle control 
(2) to the rabbit 
position for all full 
power mowing

Always have the 
engine throttle 
control (2) in this 
position when 
starting a cold 
engine.

P.

Q.

R.

Stopping the engine

1.  To stop the engine, move the engine throttle 

control (2) to the “OFF” position. (Fig S).

EMERGENCY STOPPING

In the event the lawn mower does not stop, remove 

the spark plug cover from the spark plug (20).
IMPORTANT: if the spark plug (20) method is used 

it is recommended to wear a rubber glove when 

grasping the spark plug cap. (20)
CAUTION: The spark plug may be hot.
Persons with heart conditions or any medical condition which can be affected 

by electric shock should not attempt this method.
When the engine has stopped, the fuel should be drained from the fuel tank 

(16), spark plug cap (20) removed (if not already removed), and the mower must 

NOT be restarted until the problem has been fixed by an authorised Service 

Agent.
If the above method cannot be used, wheel the lawn mower to a safe area and 

allow the lawn mower to continue to run until the fuel has been all used up.
Do NOT lift the lawn mower.  Do NOT tilt the lawn mower.
Do NOT leave the running lawn mower unattended.
Do NOT put hands under the running lawn mower under any circumstances.

Mowing advice

1.   Before mowing always check and clear the grassed area for all foreign 

objects, especially solid ones semi concealed in the ground such as rocks, 

stumps and garden stakes.

2.   Sharp blades cut cleanly and efficiently, if the blades are dull it will tear the 

grass.  This will result in the ends turning brown. When the blades no longer 

cut cleanly either sharpen them or replace them.

3.   To safely operate the mower ensure all four wheels are on the ground and be 

careful not to lose your footing or control of the mower. Be very careful when 

mowing uneven or rough ground. Keep a firm grip on the handle bar at all 

times, always walk, never run with the lawn mower.

S.

 


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140cc 4 Stroke Petrol Lawn Mower 

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4.   For healthy growth, grass should not be cut too short. The grass will 

remain healthier, greener and require less watering.

5.   Vary your cutting pattern from week to week, this will help to prevent 

matting and graining of the grass.

Engine tipping

NOTE: Always ensure the engine is switched off and 

the spark plug cap is removed before undertaking 

this task.
When cleaning, or performing any maintenance  

such as replacing the blades, it is very important  

that the lawn mower is ONLY tipped backwards.  

(Fig T). Failing to do so will result in the engine 

damage. Should this occur, the mower should be 

taken to a lawn mower repair shop which is not  

covered under warranty.

Poor engine performance

Should the engine idle or run rough at full speed with excessive bluey/black 

smoke emanating from the muffler, it is possible that either the engine was 

slightly tipped incorrectly (refer above). If the mower had previously been 

tipped, allow the engine to run for a few minutes and the excess oil will burn 

out.
If the engine is not running at full speed, check the fuel is fresh, check the oil 

level, and also inspect under the deck to ensure there is no build up of grass.
Check the spark plug. If the mower continues to underperform, take the 

mower to your nearest an authorised Service Agent.

T.

Maintenance
Replacing the Blades

Note. Before making any adjustment or 

maintenance procedures to the lawn mower ensure 

it is turned off and the spark plug lead is removed.
Note. Wear heavy gloves to protect your hands.
1.   With the engine switched off, remove the 60L 

hard catcher (7) and lift the front of the lawn 

mower upwards so the upper handles (1) sit on 

the ground and the spark plug faces upwards. 

2.   Remove the blade bolt (25) using a 17mm spanner (not supplied) by 

turning in an anti-clockwise direction (Fig U), then remove the outer flange 

(26) (Fig V).  This allows you to be able to remove the blade mounting plate 

(24) from the lawn mower. 

3.   To remove a single blade from the blade mounting plate (24), again use 

a 17mm spanner (not supplied) to loosen and remove the nut, screw and 

washers. (Fig W/X)

NOTE: There is 1 washer located under the screw 

on the outer side of the blade mounting plate (24), 

and one on the underside of the blade mounting 

plate in between the blade and blade mounting 

plate (24).  Be careful not to lose these.
4.   Repeat the process to remove the other blade. 
5.   Clean the dirt and grass from around the  

blade mounting area. 

U.

X.

W.

V.

Y.

 


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6.   Replace the 2 blades to ensure a smooth even cut and re-fit them on the 

mower in the reverse direction they were removed. (Fig Y)

7.   Lastly, secure the nuts firmly, (20-25Nm) repeating this for the other blade. 
8.   Replace the blade mounting plate (24) with new blades attached, then 

the outer flange (26), followed by the blade bolt (25). Retighten the blade 

bolt tightly (50 – 59Nm).

   NOTE:  Use a wooden block to stop the blade from turning. The 2 blades 

should be tightened fully but check to ensure they can still swing back 

if they were to hit a solid object. Where required tighten the bolts with a 

torque wrench, the centre disc blade bolt torque: 50 – 59Nm and the four 

blades torque: 20-25Nm. If you do not have a torque wrench ask a mower 

service dealer to tighten the blade bolts before you use the mower.

   Check lawn mower blades regularly. Look for damage, bends and 

dullness.  Blades should be replaced every year or two depending on 

usage, or when they become worn and no longer cut the grass cleanly.

   The performance of grass catching can also reduce if the blade becomes 

worn.  Replacement blade sets are available for purchase from www.

extrabattery.com.au, or by calling 1800 909 909.

Air Cleaner Maintenance

The air cleaner system uses a pleated filter.
IMPORTANT A dirty air filter (21) will restrict air flow to the carburettor.
To prevent carburettor malfunction, service the air filter (21) regularly.   

Check that the air filter (21) is clean and dry of dirt.
Filters thick with debris will not allow the engine to breathe and result in 

difficult starting and poor engine performance.
The air filter (21) should be checked after approximately 25 hours of use,  

or annually.
1. Undo the top clip that holds the filter cover (22). ( Fig Z)
2.  Open the air filter cover (22) and remove the air filter (21). ( Fig AA)
3.  To loosen debris, gently tap the air filter (21) on a hard surface.  If the filter 

is excessively dirty, replace with a new filter.

4.  Wash the filter in liquid detergent and water.  Then allow it to thoroughly 

air dry.  Do not oil the filter.

5.  Re-install the air filter (21).
6.  Close the air filter cover (22) and secure the fastener.
NOTE: Refer to engine manual for further information.
 CAUTION.  Never use fuel or low burning paint solvents to clean the filter.  

A fire or explosion could result.
CAUTION. Clean the filter in a solution of household detergent and warm 

water. Ensure the filter is dry before re fitting. 
 Replacement air filters 

are available from Briggs 

and Stratton via www.

briggsandstratton.com 

or calling their 

Customer Service  

on (03) 9796 4900

AA .

Z.

 


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                140cc 4 Stroke Petrol Lawn Mower 

AFTER SALES SUPPORT

e-mail: info@909.com

1800 909 909

MODEL: №. 52371 

(toll free)

AFTER SALES SUPPORT

(toll free)

140cc 4 Stroke Petrol Lawn Mower 

e-mail: info@909.com

1800 909 909

MODEL: №. 52371

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Spark plug

To ensure the engine is operating correctly, the spark plug (20) must be 

properly gapped and free of carbon deposits. Always check the spark plug 

cable is firmly fitted to the top of the spark plug. The spark plug should be 

changed after approximately 25 hours of use, or annually.
CAUTION. If the engine has been running, the muffler will be very hot.   

Be careful not to touch the muffler.
1.   Remove the spark plug cap (20) (Fig AB). Using the supplied spark plug 

wrench (30) remove the spark plug (Fig AC), and clean any deposits from 

the spark plug (20) with a rag or damp cloth.

2.   Visually inspect the spark plug (20). Discard the spark plug (20) if there is 

apparent wear, or if the insulator is cracked or chipped.

3.   Check that the end of the spark plug (20) is not blackened by carbon build 

up. Clean with a soft wire brush if necessary.

4.   Measure the plug gap with a feeler gauge. Correct as necessary by 

bending the side electrode. The gap should be 0.7 - 0.8mm.

5.   Thread the spark plug (20) in by hand to prevent cross-threading.
6.   Once the spark plug (20) is seated, tighten with the supplied spark plug 

wrench (30) to compress the washer.

 NOTE. When installing a new spark plug, tighten 1/2 turn after the spark 

plug seats to compress the washer.        
CAUTION. The spark plug must be securely tightened. An improperly 

tightened spark plug can become very hot and may damage the engine.
Replacement spark plugs are available from purchase from lawn mower 

or small engine repair 

shops

AC.

AB.

Storage and Transporting
Transporting

WARNING: Ensure the engine is not running and has cooled before 

transporting.
WARNING: If the engine must be tipped to transport equipment or to 

inspect or remove grass, keep the spark plug upwards.

Transporting or tipping the engine spark plug down may cause:
•   Smoking
•   Difficulty starting
•   Spark plug fouling
•   Oil saturation of the air filter
Ensure the storage area is free from excessive humidity and dust.
Drain the fuel tank and carburettor.

WARNING. Fuel is extremely flammable and explosive under  

certain conditions.

Do not smoke or allow flames or sparks in the area.
Note. Be aware to not hit or cut the fuel tank while you are transporting.

Storage

•    When you finish working, clean the engine completely, making sure there is 

no grass or dirt on the engine.

•   Store the engine away from direct sunlight.
•    At the end of the season, give the engine an overall cleaning and a thorough 

check.

•    Whenever the machine is not used for a long period of time, proceed  

as follows:

•   Empty the fuel tank completely.
•    Empty the Carburettor bowl of all fuel by starting the lawn mower and 

letting it stop when the fuel is all used in the bowl.

•   Protect all metal engine parts from corrosion by coating them with oil.
•    Completely change the engine oil.
•    Coat areas that may rust with a light film of oil. Cover the engine and store it 

on a level surface in a dry, dust free area.

 


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                140cc 4 Stroke Petrol Lawn Mower 

AFTER SALES SUPPORT

e-mail: info@909.com

1800 909 909

MODEL: №. 52371 

(toll free)

AFTER SALES SUPPORT

(toll free)

140cc 4 Stroke Petrol Lawn Mower 

e-mail: info@909.com

1800 909 909

MODEL: №. 52371

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29

Environmental protection

Recycle unwanted materials instead of disposing of them as waste.
All tools, hoses and packaging should be sorted, taken to the local  
recycling centre and disposed of in an environmentally safe way.

Dispose of used 

engine

 oil in a manner that is compatible with the environment.

We suggest you take it in a sealed container to your local service station for 
reclamation. Do not throw it in the trash or pour it into the earth.

Service Support

If you have any issues with the operation of your product, please take it with a
copy of your receipt to one of our National Service Agents for repair. A listing
of our Service Agents is included with your product, however, you can also find
our most updated listing by visiting powertoolsupport.com, and clicking on the
Service Agent link.  Alternately call us on our Customer Support line, 1800 909 

909, for advice or support.

Accessories and After Sales Parts

Should you find the following accessories are worn or past their user life,
replacements can be purchased online via our website  

www.extrabattery.com.au

1.  Replacement 2 x swing blades 52371-BL
If you have any queries regarding these accessories,  

please call us on our Customer Support Line - 1800 909 909.

 


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                140cc 4 Stroke Petrol Lawn Mower 

AFTER SALES SUPPORT

e-mail: info@909.com

1800 909 909

MODEL: №. 52371 

(toll free)

AFTER SALES SUPPORT

(toll free)

140cc 4 Stroke Petrol Lawn Mower 

e-mail: info@909.com

1800 909 909

MODEL: №. 52371

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31

Troubleshooting 

Problem

Possible Cause

Solution

Engine does  

not start

Fuel tank (16) is empty 

Oil tank is empty 

Engine throttle control (2)  

is not in correct starting position
Spark plug (20)
Blades hitting the grass to be cut

Check the fuel tank (16), and refuel if 

required.
Check the level of the oil dipstick (19),  

and if low or empty, add oil
Move the engine throttle control (2)  

to the correct “START” position
Clean or replace if dirty or worn
Increase the cutting height of the mower 

so the blades do not make contact with  

the grass on start up

Cutting / Engine 

performance 

decreases

Cutting height
 

2 x swing blades (23) are dull  

or blunt
60L hard catcher (7) is full 

Increase the cutting height using the  

8 height adjustment lever (13)
Replace the blades with new / sharp 

blades.
Empty 60L hard catcher (7)

 60L hard catcher 

is not filling up to 

optimum level

Cutting height too low 

Grass is wet
2 x swing blades (23) are dull  

or blunt
Rear discharge chute (12) 

 is blocked

Increase the cutting height using the  

8 height adjustment lever (13)
Allow the grass to dry before mowing
Sharpen or replace the 4 x swing blades 

(23)
Stop mower and clear the rear discharge 

chute (12)

For issues relating specifically to the Briggs and Stratton engine, please contact  

Briggs and Stratton via www.briggsandstratton.com or calling Customer Service  

on (03) 9796 4900.  For all other issues, please contact Customer Service on 1800 909 909  

or email info@909.com

Specifications

Engine:  

140cc, Four Stroke

Engine Capacity:  

140cc

Bore:    

63.4 mm

Stroke:  

44.45 mm

Speed:  

2900 RPM/min -1

Fuel Type:  

Unleaded petrol

Oil Type:  

4 Stroke Engine Oil SAE 10W-30

Fuel Tank Capacity:  

0.8L/800ml

Oil Tank Capacity:  

0.47L/470ml

Width of cut:  

48cm/480mm/(19”)

Blades:  

2 x Swing Blades

Height adjustment:  

8 Levels, 20 – 65mm

Spark Plug Type:  

Champion RC12YC

Catcher Capacity:  

60 Litres

Weight (GW):  

32 kg

Noise label rating:  

69dBA (taken at 7.5 metres) 

 

 

You must wear ear protection at all times.

Product Dimensions:  

 1430 X 1030 X 540mm +/- 10% (L x W x H)

This product complies with:    Safety Report AS 2657:1985 

EMC EN ISO 14982:2009

 


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