Certa 17" 146CC 2 In 1 Petrol Lawn Mower - (CTMWR17PTA) - Manual

 

Safety & Warnings

 

Intended use

The petrol lawnmower is for private use in a household garden environment. The mower may only be used for the maintenance of grass or lawns in the home and for garden hobbies. Any application that is not listed in this guide is prohibited. The above use and safety instructions must be strictly followed. The manufacturer assumes no liability for any damage caused by improper operation, improper use, misuse, unauthorised repairs or alterations performed.

To ensure that you get the best results from your petrol lawnmower, please read all of the safety and operating instructions carefully before using this product.

 

Important Notes

• Read the instructions carefully: Be familiar with the controls and the proper use of the equipment.
• Never allow children or people unfamiliar with these instructions to use the lawnmower. Local regulations can restrict the age of the operator.
• Never mow while people, especially children or pets are nearby.
• Keep in mind that the operator or user is responsible for accidents or hazards occurring to other people or their property.

 

Preparation

• While mowing, always wear substantial 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 can be thrown by the machine.
• 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 tanks and container caps securely.
• Replace faulty silencers.
• Before using, always visually inspect to see that the blades, blade bolts and cutter assembly are not worn or damaged. Replace worn or damaged blades and bolts in sets to preserve balance.

 

Operation

• Do not operate the engine in a confined space where dangerous carbon monoxide fumes can collect.
• Mow only in daylight or in good artificial light.
• Avoid operating the equipment in wet grass, where feasible.
• Always be sure of your footing on slopes.
• Walk, never run.
• For wheeled rotary machines, mow across the face of slopes, never up and down.
• Exercise extreme caution when changing direction on slopes.
• Do not mow excessively on steep slopes.
• Use extreme caution when reversing or pulling the lawnmower towards you.
• Stop the blades if the lawnmower has to be tilted for transportation when crossing surfaces other than grass and when transporting the lawnmower to and from the area to be mowed.
• Never operate the lawnmower with defective guards or without safety devices, for example, deflectors and/or grass catchers, in place.
• Do not change the engine governor settings or over-speed the engine.
• Disengage all blades and drive clutches before starting the engine.
  Start the engine or switch on the motor carefully according to instructions and with feet well away from the blades.
• Do not tilt the lawnmower when starting the engine or switching on the motor, except if the lawnmower has to be tilted for starting. In this case, do not tilt it more than absolutely necessary and lift only the part which is away from the operator.
• Do not start the engine when standing in front of the discharge chute.
• 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 lawnmower while the engine is running.
• Stop the engine and disconnect the spark plug wire,
• Before clearing blockages or unclogging chute;
  • Before checking, cleaning or working on the lawnmower;
  • After striking a foreign object inspect the lawnmower for damage and make repairs before restarting and operating the lawnmower;
  • If lawnmower starts to vibrate abnormally (check immediately).
• Stop the engine:
  • Whenever you leave the lawnmower;
  • Before refuelling.
• Reduce the throttle setting during engine shut down and if the engine is provided with a shutoff valve, turn the fuel off at the conclusion of mowing.

 

Maintenance and Storage

• Keep all nuts, bolts and screws tight to ensure that the equipment is in safe working condition.
• Never store the equipment with petrol in the tank inside a building where fumes can reach an open flame or spark.
• Allow the engine to cool before storing in any enclosure.
• To reduce the fire hazard, keep the engine, silencer, battery compartment and petrol storage area free of grass, leaves or excessive grease.
• Replace worn or damaged parts for safety.
• If the fuel tank has to be drained, this should be done outdoors.

 

General Operation and Safety Rules

• Read the instructions carefully. Be familiar with the controls and the proper use of the equipment.
• Do not put hands or feet near or under rotating parts. Keep clear of the discharge opening at all times.
• Only allow responsible individuals, who are familiar with the instructions, to operate the machine.
• Thoroughly inspect the area where equipment is to be used and remove all objects which can be thrown by the machine.
• Never mow while people, especially children or pets are nearby.
• While mowing, always wear substantial footwear and long trousers. Do not operate the equipment when barefoot or wearing open sandals.
• Do not pull mower backwards unless absolutely necessary. Always look down and behind before and while mowing backwards.
• Never operate the lawnmower with defective guards or without safety devices, for example, deflectors and/or grass catchers, in place.
• Only use accessories approved by the manufacturer.
• Stop the blade(s) when crossing gravel drives, walks or roads.
• Stop the engine and disconnect the spark plug
  • Before clearing blockages or unclogging chute
  • Before checking, cleaning or working on the lawnmower
  • After striking a foreign object – inspect the lawnmower for damage and make repairs before restarting and operating the lawnmower
  • If lawnmower starts to vibrate abnormally (check immediately)
• Shut the engine off and wait until the blade stops completely before removing grass catcher.
• Mow only in daylight or good artificial light.
• Do not operate the machine while under the influence of alcohol or drugs.
• Never operate the machine in wet grass. Reduced footing could cause slipping, keep a firm hold on the handle and walk, never run.
• Disengage the self-propelled mechanism before starting the engine.
• Replace faulty silencers.
• Always wear safety goggles or safety glasses with side shields when operating mower.
• Remove obstacles such as rocks, tree limbs, etc.
• Watch for holes, ruts or bumps. Tallgrass can hide obstacles.
• Do not trim near drop-offs, ditches or embankments. The operator could lose footing or balance.
• Do not mow excessively on steep slopes.
• Keep in mind that the operator or user is responsible for accidents or hazards occurring to other people or their property.
• Be alert and turn the machine off if children enter the area.
• For wheeled rotary machines, mow across the face of slopes, never up and down.
• Never allow children or people unfamiliar with these instructions to use the lawnmower. Local regulations can restrict the age of the operator.
• Warning - Petrol is highly flammable.
  • Store fuel in containers specifically designed for this purpose.
  • Refuel at 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 tanks and container caps securely.
• Before using, always visually inspect to see that the blades, blade bolts and cutter assembly are not worn or damaged. Replace worn or damaged blades and bolts in sets to preserve balance.
• Never tamper with safety devices. Check their proper operation regularly.
• Keep machine free of grass, leaves or other debris build-ups. Clean oil or fuel spillage. Allow machine to cool before storing.
• Exercise extreme caution when changing direction on slopes.
• Never attempt to make wheel height adjustments while the engine (motor) is running.
• Grass catcher components are subject to wear, damage and deterioration, which could expose moving parts or allow objects to be thrown. Frequently check components and replace with manufacturer’s recommended parts, when necessary.
• Mower blades are sharp and can cut. Wrap the blades or wear gloves and use extra caution when servicing them.
• Do not change the engine governor setting or over-speed the engine.
• Use extreme caution when reversing or pulling the lawnmower towards you.
• Stop the blade(s) if the lawnmower must be tilted for transportation when crossing surfaces other than grass and when transporting the lawnmower to and from the area to be mowed.
• Disengage all blades and drive clutches before starting the engine.
• Start the engine or switch on the motor carefully according to instructions and with feet well away from the blade(s).
• Do not tilt the lawnmower when starting the engine or switching on the motor, unless the lawnmower must be tilted for starting. In this case, do not tilt it more than absolutely necessary and lift only the part which is away from the operator.
• Do not start the engine when standing in front of the discharge chute.
• Never pick up or carry a lawnmower while the engine is running.
• Reduce the brake setting during engine shut down and, if the engine is provided with a shut-off valve, turn the fuel off at the conclusion of mowing. Go slow when using a trailing seat.

 

Overview

 

 

Symbols

The following symbols can be found on the machine to remind you of the care and attention that are required during use. The symbols mean: 

 

	Read the Operator’s Manual.		Before you work on the cutting equipment remove the spark plug socket.
	DANGER - Rotating blades. Keep hands and feet out of opening while the machine is running.		Warning! Before starting any repair work, remove the spark plug cable from the spark cable.
	Warning! Keep hands and feet clear of the cutting deck when the machine is running.		Remove objects that could be thrown by the blade.
	Keep bystanders away		Warning! Keep other people at a safe distance when using the lawnmower.

 

Important: This cutting machine is capable of amputating hands and feet and throwing objects. Failure to observe the following safety instructions could result in serious injury or death.

Warning: In order to prevent accidental starting when setting up, transporting, adjusting or making repairs, always disconnect spark plug wire.

Warning: Engine exhaust, some of its constituents and certain vehicle components contain or emit chemicals known to cause cancer and birth defects or other reproductive harm.

Caution: Muffler and other engine parts become extremely hot during operation and remain hot after the engine has stopped. To avoid severe burns on contact, stay away from these areas.

 

Assembly Instructions

Read this instruction and this manual entirely before you attempt to assemble and to operate your new lawnmower.

 

Important: The lawnmower is shipped without oil or petrol in the engine. Your new lawnmower has been assembled and tested at the factory.

 

Remove Lawn Mower from Carton

Roll the lawnmower out of the carton and check carton thoroughly for additional loose parts.

 

Install Attachments

Your lawnmower was shipped ready to be used as rear bag mower.

 

Set Up Your Mower

1. Raise handles until lower handle section locks into place at mowing position.
2. Remove protective padding, raise upper handle section into place on the lower handle and tighten both handle knobs.
3. Remove handle padding holding operator presence control bar to upper handle.

 

 

Important: Unfold handle carefully so as not to pinch or damage control cables.

 

Operation

 

 

Brake level must be held down to the handle to start the engine. Release it to stop the engine.

• Starter handle-used for starting engine.

• Use Your Lawnmower Engine Speed-The engine speed was set at the factory for optimum performance. Speed is not adjustable.

 

Adjust Cutting Height

Raise wheels for low cut and lower wheels for a deeper cut. Adjust the cutting height to suit your requirements. Medium position is best for most lawns.

 

Before Starting Engine Add Oil

Before each subsequent use, the oil level must be checked and if necessary, top up with 500ml SAE30 engine oil.

 

 

Your lawnmower is shipped without oil in the engine. For type and grade of oil to use, see “Change Oil” in the Maintenance section of this manual.

 Caution: DO NOT overfill the engine with oil or it will smoke heavily from the muffler on start-up.

1. Be sure that the lawnmower is level.
2. Remove oil dipstick from oil fill spout.
3. Insert and tighten dipstick.

 

Important: Check oil level before each use. Add oil if needed. Fill to the full line on the dipstick. Change the oil after every 25 hours of operation or each season. You may need to change the oil more often under dusty, dirty conditions. See “CHANGE OIL” in the Maintenance section of this manual.

 

Add Petrol

• Fill fuel tank up to the bottom of the tank filler neck. Do not overfill. Use fresh, clean, regular unleaded petrol. Do not mix oil with petrol. Purchase fuel in quantities that can be used within 30 days to assure fuel freshness.

 

 

Caution: Wipe off any spilled oil or fuel. Do not store, spill or use petrol near an open flame.

 

Caution: Alcohol blended fuels (called gasohol or using ethanol or methane can attract moisture which leads to separation and formation of acids during storage. Acidic gas can damage the fuel system of an engine while in storage. To avoid engine problems, the fuel system should be emptied before storage of 30 days or longer. Empty the gas tank, start the engine and let it run until the fuel lines and carburettor are empty. Use fresh fuel next season. See Storage Instructions for additional information.

Never use engine or carburettor cleaner products in the fuel tank or permanent damage may occur.

 

Start Engine

To start the engine, first, make sure that the spark plug and the machine is filled with sufficient oil and petrol.

Note: Due to the protective coating on the engine, a small amount of smoke may be present during the initial use of the product and should be considered normal.

Hold operator presence control bar down to the handle and pull starter handle quickly.

Do not allow starter rope to snap back.

Note: In cold condition, it’s necessary to push the prime button on the air filter before pulling the starter coil, (Please see form 1). Also should put more fuel to mix with air for easy start-up. When you push the prime button, it will pump the fuel directly from carburettor to burning housing.

 

Primer only for cool engine use
Temperature	Push time
<0°C	2-3
0°C-10°C	1-2
10°C-20°C	0-1
>20°C	0

 

Form 1

Note: In cold conditions, it may be necessary to repeat the priming steps.

 

Stop Engine

• To stop the engine, release operator presence control bar.

 Warning! The blade will continue to rotate for a few seconds after the engine has stopped. Disconnect the spark plug cap if the lawnmower is to be left unattended.

 

Mowing Tips

• Under certain conditions, such as very tall grass, it may be necessary to raise the height of cut to reduce pushing effort and to prevent from overloading the engine and leaving clumps of grass clippings. It may also be necessary to reduce ground speed and/or run the lawnmower over the area a second time.
• For extremely heavy cutting, reduce the width of cut by overlapping previously cut path and mow slowly.
• Pores in cloth grass catchers can become filled with dirt and dust with use and catchers will collect less grass. To prevent this, regularly clean the catcher with water and let dry before using.
• Keep top of engine around starter clear and clean of grass clippings and chaff.
  This will help to boost airflow and extends engine life.

 

Cleaning & Care

 

Maintenance

Important - Regular, careful maintenance is essential for keeping the safety level and original performance of the machine unchanged in time.

• Keep all nuts, bolts and screws tight to ensure that 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 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.
• For reasons of safety, do not use the equipment with worn or damaged parts. Parts are to be replaced and not repaired. Use genuine spare parts (blades should always bear the symbol). Parts that are not of the same quality can damage the equipment and be dangerous for your safety.
• 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.
• Check the self-closing guard and grass-catcher frequently for wear and deterioration.
• Whenever the machine is to be handled, transported or tilted you must:
  
  • Wear strong working gloves;
  • Grasp the machine at the points that offers a safe grip, taking account of the weight and its distribution.

Cleaning

• Carefully clean the machines with water after each cut; remove the grass debris and mud accumulated inside the chassis to avoid their drying and thus making the next start-up difficult.
• The paintwork on the inside of the chassis may peel off in time due to the abrasive action of the cut grass; in this case, intervene promptly by touching up the paintwork using a rustproof paint to prevent the formation of rust that would lead to corrosion of the metal.
• Remove the transmission casing by removing the screws and clean around the transmission and drive belts with a brush or compressed air once or twice a year.
• Once in every season, the drive wheels should be cleaned internally. Remove both wheels. Clean the gear wheel and the wheel gear rim of grass and dirt using a brush or compressed air.

 

Changing Blades

To replace the blade, undo the screw. Empty the oil tank before removing the blade.

 

 

Reinstall as illustrated. Tighten the screw properly. Tightening torque is 45Nm. When replacing the blade, the blade screw should also be replaced.

 

Warning: Prevent skin contact with used engine oil. Wash your skin with soap and water after oil change.

 

Changing Oil

Caution: Used oil is a hazardous waste product. It is suggested to bring used oil to your local recycling centre with properly sealed containers. Do not discard with household waste.

1. Let engine run out-of-out and wait until engine stops and cooled slightly.
2. Disconnect spark plug wire and keep away the spark plug.
3. When engine is still warm, remove oil drain plug (A). Drain oil into a proper container. (Fig.12)
4. Clean the oil drain plug before restoring it back.
5. Place engine level. Remove dipstick. Add new recommended oil about 0.3L slowly to an upper limit on the dipstick, don’t overfill.
6. Replace dipstick.

 

Spark Plug

Once the engine has cooled, remove the spark plug and clean the plug with a wire brush. Using a feeler gauge set the gap to 0.7-0.8mm (0.028-0.031"). Refit the spark plug taking care not to overtighten.

 

 

Air Filter

Unclip the air filter cover and remove the sponge filter element. To avoid objects falling into the air intake, replace the air filter cover.

 

 

Draining the Fuel Tank and Carburettor

1. Place an approved petrol container below the carburettor and use a funnel to avoid spilling fuel.
2. Remove the drain bolt and then move the fuel valve lever to the ON position.
3. After draining the fuel completely into the container, reinstall the drain bolt and washer. Tighten the drain bolt securely.

 

 

Storage

• The same petrol must not remain in the tank for more than one month.
• Thoroughly clean the mower and store it indoors in a dry place.

 

The Environment

In order to protect the environment, it recommends the following points that should be given special consideration:

• Always use pure unleaded petrol.
• Always use a funnel or petrol can with level control to avoid spillage when refilling the fuel tank.
• Do not fill the fuel tank completely.
• Do not overfill with engine oil.
• When changing the oil, ensure that all the used oil is collected. Avoid spillage . Take the used oil to a recycling unit.
• Do not dispose of used oil filter in a rubbish bin. Take it to a recycling unit.
• Replace the silencer if faulty. When carrying out repairs, always use original spare parts.
• Always seek professional help when the carburettor requires adjustment.
• Clean the air filter according to directions.
• When, after many years of service, your machine needs to be replaced or is no longer required, it is recommended to return the machine to your distributor for recycling.

 

Maintenance Schedule

 

REGULAR SERVICE PERIOD (4)		Before  Each Use	First Month or 5 Hrs	Every 3 Months or 25 Hrs	Every 6 Months or 50 Hrs	Every Year or 100 Hrs	Every 2 Years or 250 Hrs
ITEM Perform at every indicated month or operating hour interval, whichever comes first.
Engine oil	Check	O
	Replace		O		O(2)
Air cleaner	Check	O
	Replace			O
Spark plug	Check-adjust					O
	Replace						O
Flywheel brake pad (A types)	Check				O
Fuel tank and filter	Clean					O(3)
Fuel tube	Check	Every 2 years (Replace if necessary)(3)
Valve clearance	Check-adjust					O(3)
Combustion chamber	Clean	After every 200 hours(3)

 

Specifications

 

Petrol engine	2.6kW
Engine speed	3000/min
Cutting width	420mm
Adjustable cutting height	15-70mm
Grass collection capacity	40L
Sound pressure level	81.5dB (A) （K=3.0）
Sound power level	94.3dB (A) （K=1.92)
Guaranteed sound power level	96dB (A)
Maximum vibration value	6.52m/s2 (K=1.5)

Item	Specification	Maintenance
Spark plug gap	0.028-0.031" (0.7-0.8mm)	Refer to “Spark Plug” section of Cleaning and Care module.
Valve clearance (cold)	IN:0.06±0.02mm EX:0.08±0.02mm	Contact a qualified mechanic.
Other specifications	No other adjustments needed.

 

Troubleshooting

 

The engine does not start	Possible Cause	Correction
1. Check fuel	Out of fuel	Refuel
	Bad fuel; engine stored without treating or draining petrol or refuelled with bad petrol	Drain the fuel tank and carburettor. Refuel with fresh petrol
2. Remove and inspect the spark plug	Spark plug faulty fouled or improperly gapped	Replace the spark plug
	Spark plug wet with fuel (flooded engine)	Dry and reinstall the spark plug
3. Take engine to an authorised servicing dealer or refer to shop manual	Fuel filter clogged, carburettor malfunction, ignition malfunction, valves stuck, etc.	Replace or repair faulty components as necessary
4. Push the prime button	Cold condition	Push the prime button

Engine Lacks Power	Possible Cause	Correction
1. Check air cleaner	Air cleaner elements clogged	Clean or replace air cleaner elements
2. Check fuel	Bad fuel; engine stored without treating or draining petrol, of refuelled with bad petrol	Drain the fuel tank and carburettor. Refuel with fresh petrol
3. Take engine to an authorised servicing dealer or refer to shop manual	Fuel filter clogged, carburettor malfunction, ignition malfunction, valves stuck, etc	Replace or repair faulty components as necessary