Cobra T24C User manual

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MODELS: T24C (SM-WG430-W01)
COBRA CULTIVATOR / TILLER
OWNER’S MANUAL
Cobra Garden Machinery
Henton and Chattell Ltd., London Road, Nottingham NG2 3HW UK
www.cobragarden.co.uk

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CONTENTS
SECTION 1 SAFETY LABELS ……………..………….…………………………. 3
SECTION 2 SAFETY INSTRUCTION…………………………………………….. 4
SECTION 3 COMPONENTS ………………………………………………………. 6
SECTION 4 TECHNICAL DATA………………………………………………….....7
SECTION 5 ASSEMBLY …………………………………………………………….7
SECTION 6 OPERATION……………………………………………………………8
SECTION 7 MAINTENANCE….…………………………………………………….9
SECTION 8 STORAGE…………………….………………………………………. 10
SECTION 9 TROUBLESHOOTING………………………………………………. 11
SECTION 10 WARRANTY …...……………………………………………………. 12
SECTION 11 ENVIRONMENT ……………………………………………………. 12
SECTION 12 EC-DECLARATION OF CONFORMITY………………………….. 13

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1. SAFETY LABELS
The following safety labels appear on the machine. They are there to remind you of the care and attention
required in use. This is what the symbols mean:
Read Operator's Manual
Danger! Rotating work machine.
When repairing, please pick up the spark plug, and then repair it according to the
operational manual.
Keep Bystanders Away
Fuel is flammable, keep fire away. Do not add fuel with running
machine.
Toxic fumes; don’t operate inside house.
When working, please wear the glasses and ear plugs to defend the operator
himself.
Caution: Engine hot.

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2. SAFETY INSTRUCTION
WARNING: When using petrol tools, basic safety precautions, including the following, should always be
followed to reduce the risk of serious personal injury and/or damage to the unit. Read all the instructions
before operating this product and retain these instructions for future reference.
WARNING: This machine 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 physician and the medical implant
manufacturer before operating this machine.
Training
1. Before using the tiller read the instructions carefully. Familiarise yourself with the controls and pay
particular attention in learning how to stop the machine in an emergency.
2. Never allow children or people unfamiliar with these instructions to use the tiller. Local regulations
can restrict the age of the operator.
3. Never operate while people, especially children or pets are nearby.
4. Never use the tiller if the operator is taking medicine or substances that could affect or impair his
ability to react or concentrate.
5. Keep in mind that the operator or user is responsible for accidents or hazards occurring to other
people or their property.
Before you start
1. While operating the tiller, always wear substantial footwear and long trousers. Do not operate the
equipment when barefoot or wearing open toed sandals.
2. Thoroughly inspect the area where the equipment is to be used and remove all objects which can
damage or be thrown by the machine.
3. WARNING - Petrol is highly flammable.
- Store fuel in containers specifically designed for this purpose.
- Refuel outdoors only and do not smoke while refuelling; 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 machine 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 blade, blade bolts and cutter assembly are not
worn or damaged. Replace worn or damaged blades and bolts in sets to preserve balance.
Operation and Caution
1. Do not operate the engine in a confined space where dangerous carbon monoxide fumes can
collect, refuel outdoors only.
2. Operate only in daylight or in good artificial light.
3. Avoid operating the equipment in wet grass, where feasible.
4. Always be sure of your footing on slopes.
5. Walk, never run, always be in control of the tiller and never allow yourself to be pulled along.
6. Exercise extreme caution when changing direction on slopes.
7. Do not operate on excessively steep slopes of more than 20°
8. Use extreme caution when reversing or pulling the tiller towards you.
9. Never operate the tiller with defective guards, covers or without safety devices in place.
10. Do not change the engine governor settings or over speed the engine.
11. Before starting the engine disengage the cultivator blade and drive clutches.
12. Keep your feet well away from the blade when starting the engine and in accordance with the
instructions.
13. Do not tilt the tiller when starting the engine and always start on a flat surface.
14. Never put hands or feet near or under rotating parts.
15. Always ensure the engine is fully switched off before picking up/carrying the tiller.
16. Stop the engine and disconnect the spark plug wire, make sure that all moving parts have come to
a complete stop and, where a key is fitted remove the key, make sure engine has had time to cool.

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- Before clearing the cultivator tines / blades
- Before checking, cleaning or working on the tiller.
- After striking a foreign object. Inspect the tiller for damage and make repairs before restarting.
- If the tiller starts to vibrate abnormally (check immediately).
17. Stop the engine and disconnect the spark plug wire, make sure that all moving parts have come to
a complete stop and, where a key is fitted remove the key, make sure engine is completely cooled.
- Whenever you leave the tiller.
- Before refuelling.
18. Reduce the throttle setting during engine shut down and, if the engine is provided with a shut-off
valve, turn the fuel valve off.
Maintenance and Storage
1. Keep all nuts, bolts and screws tight to be sure the equipment is in safe working condition.
2. Never store the equipment with petrol in the tank inside a building where fuel vapours can reach an
open flame or spark or where the temperature is high.
3. Before storage allow the engine to cool.
4. To reduce the fire hazard, keep the engine, silencer, battery compartment and petrol storage area
free of grass, leaves, or excessive grease.
6. Replace worn or damaged parts for safety. Genuine parts should always be used as parts of inferior
quality can damage the equipment and compromise safety.
7. If the fuel tank has to be drained, this should be done outdoors. Always ensure engine is completely
cooled before starting this task.
8. If the cultivator blades/tines need to be removed, wear strong gloves to prevent injury to hands and
fingers.
9. When transporting the machine make sure you close the fuel cut off. Be careful to ensure weight is
evenly distributed. Wear strong gloves.
10. When tilting the machine never tilt towards the air filter as this may become damaged with fuel.
11. Never crank the engine when the spark plug is removed.
12. Frequently check the fuel lines and fittings for damage and cracks, replace if necessary
13. Never start the engine with the air filter cover removed.
14. Carefully clean the tiller after use to remove debris as this can damage and corrode.
Warning: Do not touch rotating tines/blade.
Warning: Refuel in a well ventilated area with the engine stopped

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3. COMPONENTS
1. Right handle 2. Left handle 3. Stop Switch 4. Throttle lever
5. Clamps 6. Middle handle 7. Lower handle 8. Top cover plate
9. Gearbox 10. Wheel 11. Wheel bracket 12. Tines lock pin
13. Rotating tine 14. Tiller cover 15. Engine 16. Hand wheel nut

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4. TECHNICAL SPECIFICATION
Type
T24C
Motor
1E40F-5A
Engine displacement
42.7 cm3
Rated engine power
1.25 Kw
Blade width
235 mm
Fuel mix, Fuel: 2 Stroke Oil
25:1
Standard engine speed
6500r/min
Net weight
16.2kg
Guaranteed Sound Power
level
(According to 2000/14/EC)
108 dB(A)
Vibration(According to EN
709)
9.85 m/s2, K=1.5m/s2
5. ASSEMBLING AND ADJUSTMENT
1. Assembly of Lower Handles
Attach the lower handles and loosely
tighten the hand wheel bolts.
2. Assembly of Upper Handles
Attach the upper handles and loosely
tighten the hand wheel bolts.
3. Fitting the Cover Plate
Fit the cover plate with the nuts and
bolts supplied. Tighten with spanners.
4. Tighten and secure the hand
wheels and other fixings
Adjust the rear wheel: Select the
working height for the wheels. Place the wheels in the highest position when operating and the middle and
lowest position at other times.

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6. OPERATION
Warning: Only operate with others a safe distance away from the area to be tilled
1. Add oil and fuel mixture
Use the mixture of petrol:2 stroke oil – 25:1 Under no circumstances use petrol without 2 stroke oil. Take
care when fueling to avoid possible igniters. Take care not to spill fuel whilst refueling.
2. Starting procedure
a. Ensure the ‘on/off’ switch is selected to ‘on’
b. Press the carburetor primer 5 to 6 times. Fuel will be pumped through the transparent fuel pipe. Close
the choke lever.
Note: If the engine is warm then adjust the choke position accordingly, i.e. open if warm and closed if cold.
It is possible to vary the position between open and closed.
c. Check the tiller tines are clear and will not make contact with anybody or anything.
d. Smoothly pull the start rope and return the starter to the engine position. Repeat the process as
necessary to start the engine.
e. Once the engine is running and warm then adjust the choke lever to the open position.
f. Engage the throttle on the handles to increase the speed of the engine and to operate the tiller tines.
Gradually increase the speed to a satisfactory tilling speed.
g. Always adjust the tiller operating height as required with the rear height adjustment, with the engine
switched off.
h. When stopping, gradually reduce the speed, let the engine idle a few minutes and then switch the engine
‘off’

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7. MAINTENANCE
Warning: Only maintain the tiller when the tiller is cool and switched off.
a. Ensure that all the bolts and fixings of the tiller are fixed tightly, before operating and periodically after
one or two hours of usage.
b. Every 20 hours of usage add lubrication to the gear case and check the gear wheels conditions. Where
the gears are damaged contact your local Cobra dealer.
c. Engine maintenance:
- Spark plug, periodically clean or replace. Ensure the gap is 0.6 to 0.7mm, adjust as necessary.
-Air filter cleaning, clean or replace frequently to protect the engine:
Air filter and carburettor:
Cleaning the air filter:
- Remove the air cleaner cover by pulling the tab on side and
take out the 3 filter element.
- Use a detergent and warm water to clean the filter elements.
After cleaning, air dry the element completely and moisten with
a small amount of motor oil.
- Place the filter element into the air cleaner housing and press
the cover against the housing until it clicks.
-Idle Speed Adjustment:
Once the engine is warm then it is advised to check and adjust the idle speed. If the engine tends to stop at
idle speed, then increase the idle speed with the idle speed adjustment screw on the carburettor. Turn the
idle speed screw clockwise to increase idling speed.
If the tiller tines rotate even when idling, then slow the engine idle speed by turning the idle screw anti-
clockwise.
-Check the fuel and fuel filter for blockages each season. Contaminated fuel lines or filters will restrict fuel
flow and may prevent starting. Replace blocked fuel lines or filters.
- Check the exhaust condition and tighten fixings – replace the exhaust if damaged.
-Clean the air cooling vents around the engine to ensure the engine operates correctly and does not over
heat and become potentially dangerous.
-Every 100 hours of usage:
Check and clean the exhaust, tighten the screws and check the condition of clutch lining and drum. Ensure
the lining and drum are clean and oil/grease free, clean as necessary.

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Maintenance Schedule:
System or Component
Procedure
Before
Use
Every
25
Hours
Every
50
Hours
Every
100
Hours
Note
Fuel Leaks, Fuel
Spillage
Wipe out and
clean thoroughly
✔
FuelTank,AirFilter, Fuel
Filter
Inspect, clean
✔
✔
Replace if
necessary
Idle Adjusting Screw
See Adjusting
Idling Speed
✔
Replace
carburetor if
necessary
Spark Plug
Clean and
re-adjust plug
gap
✔
GAP: .025"
(0.6 - 0.7
mm)replace
if necessary
Cylinder Fins, Intake Air
Cooling Vent
Clean
✔
Muffler, Spark
Arrester, Cylinder
Exhaust Port
Clean
✔
IMPORTANT: Time intervals shown are maximum. Actual use and your experience will determine the
frequency of required maintenance.
8. STORAGE
- After use ensure that the tiller is stored in a dry and secure location out of the way of children.
- When storing the tiller for 2 weeks or more then complete the following procedure.
Firstly, carefully drain all remaining fuel from the tank. Clear the carburetor of fuel by running the engine
until it stops. This will ensure that the fuel does not produce gum deposits, which will block the flow of fuel
and prevent the engine from operating correctly.
When cool, remove the spark plug and add a teaspoon of clean 2 stroke oil into the spark plug hole.
Slowly pull the starter cord two or three times to oil and protect the internal components of the engine.
Refit the spark plug.
Oil the tines and other exposed parts of the tiller to prevent rusting.

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9. TROUBLESHOOTING GUIDE
Case 1. Starting failure
Check
Probable Causes
Action
Fuel Tank
Incorrect fuel
Drain it and fill with correct
fuel
Fuel Filter
Fuel filter is clogged
Clean
Carburetor Adjustment
Screw
Out of normal range
Adjust to normal range
Sparking (no spark)
Spark plug is fouled/ wet plug gap is
incorrect
Clean/ dry and correct (GAP:
0.6 ～0.7 mm)
Spark Plug
Disconnected
Re-connect and ensure tightly
fitted
Case 2. Engine starts but does not keep running or hard re-starting.
Check
Probable Causes
Action
Fuel Tank
Incorrect fuel
Drain it and fill with correct
fuel
Carburetor Adjustment
Screw
Out of normal range
Adjust to normal range
Muffler,Cylinder(exhaust port)
Carbon is built-up
Wipe away
Air Cleaner
Clogged with dust
Wash
Cylinder Fin, Fan Cover
Clogged with dust
Clean

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10. WARRANTY
This product is warranted in accordance with legal regulations for a 24 month period effective from the date
of purchase by the first user.
This product will not be covered if used in a commercial application.
This warranty covers all material or production failures, it does not include: defects from normal wear and
tear, parts such as, bearings, brushes, cables, air cleaning elements, brake pad, clutch disc, tyre, wheel,
recoil starter rope, belts, cutter blades, plugs, lubricant oils and grease or accessories. Damage or defects
resulting from abuse, accidents or alterations, natural fading of painted or plated surfaces, sheet peeling
and other natural deterioration.
Any damage that occurs from the use of non-genuine Cobra parts will not be covered.
We reserve the right to reject any claim where the purchase cannot be verified or when it is clear that the
product was not maintained properly. (Clean ventilation slots, carbon brushes and serviced regularly)
Expenses incidental to the warranty claim that are not covered;
-Compensation for loss of time, commercial loss or rental costs of substitute product.
-Costs incurred for transportation to and from the dealership.
Any damage that occurs from the following will not be covered; exposure of the product to smoke and soot,
chemical agents, bird droppings or other animal waste, seawater, sea breeze, salt or other environmental
phenomena.
Any damage resulting from operating methods other than those indicated in the owner’s manual will not be
covered.
Your purchase receipt must be kept as proof for date of purchase. Your un-dismantled tiller must be
returned to your dealer in an acceptably clean state, accompanied by your proof of purchase.
Please Register Your Tiller
If your dealer did not collect registration information from you, please take a few minutes and register your
purchase with Cobra.
You can register by completing and mailing the registration card that should be in the box or by going online
to:
www.cobragarden.co.uk and clicking on Product Registration.
Before using the tiller, all operators must read this manual
11. ENVIRONMENT
Should your machine need replacement after extended use, do not put it in the domestic waste but dispose
of it in an environmentally safe way.

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12. EC-DECLARATION OF CONFORMITY
EC Declaration of Conformity
We herewith declare,
Cobra Garden Machinery
Henton & Chattell Ltd, London Road, Nottingham NG2 3HW United
Kingdom
that the following machine complies with the appropriate basic safety and health requirements of the
EC Directive based on its design and type, as brought into circulation by us.
In case of alteration of the machine, not agreed upon by us, this declaration will lose its validity
Machine Description:
Cultivator / Tiller
Machine Type:
T24C (SM-WG430-W01)
Displacement
42.7 cm3
Max, Cutting width
235mm
Measured sound power level:
103dB(A)
Guaranteed sound power
level:
108dB(A)
Notified Body for EC Directive 2000/14/EC:0499
TÜV Rheinland LGA Products GmbH
Tillystrasse 2, 90431 Nürnberg,Germany 0197
Applicable EC Directives
EC Machinery Directive:2006/42/EC
EC Directive of Electromagnetic Compatibility:2004/108/EC
EC Directive of noise emission: 2000/14/EC&2005/88/EC
Applicable Harmonized
Standards
EN 709
EN ISO 14982
Authorized Signature/Date
Peter J. Chaloner 02-12-2016
Title of Signatory
Managing Director
Name and address of the
person authorized to compile
the technical file
Cobra Garden Machinery
Henton & Chattell Ltd, London Road, Nottingham NG2 3HW United
Kingdom