Certa 6.5HP Petrol High Pressure Washer - (CTPSGWSHA) - Manual

INSERTING A NOZZLE(Fig 12):
To insert a nozzle, pull back the locking collar at the end of the lance, insert nozzleand release the collar. This will lock the nozzle in place. Ensure the nozzle is inserted correctly. If not it can fly out and injure personnel or damage property.

 

CONNECTING THE HOSE (Fig 13):
Connect the hose to the water inlet connector (MAX.20PSI, max. Temperature 40°C) and turn the water on completely.

 

Operation & Use

PRE-OPERATION INSPECTION

CAUTION:

Engine oil is a key factor in deciding the engine's performance. Do not use engine oil with additives or 2-stroke gasoline engine oil, as they do not have enough lubricating properties, which may shorten the engine's service life.

Filling the Oil

1. Check the engine is on level ground.
2. 15W-30 oil is recommended for general all temperature use.
3. Remove the dipstick and clean it.
4. Reinsert the dipstick into the oil filler without screwing it in and check the oil level.
5. If the oil level is too low add the required amount of engine oil to the oil filler mark.
6. Replace the dipstick securely.

CAUTION:

Running with insufficient engine oil may damage the engine severely.

Fig.28

FUEL AND FUEL TANK:

Only use unleaded petrol or fuel with an octane number over 86. Using unleaded petrol or fuel will decrease the possibility of producing carbon deposit and prolong the engines service life. Never use old or polluted petrol or fuel or a mixture of petrol and engine oil. Make sure the fuel is free of dirt and water.

CAUTION:

Handle fuel with care because it can damage plastic and painted surfaces. Remove the fuel filler cap and check the fuel level. If the fuel lever is too low, refuel the tank. Remember when adding fuel do not fill over the fuel filter shoulder.

WARNING:

Petrol is extremely flammable and is explosive under certain conditions. Refuel in a well ventilated area with the engine stopped. Do not smoke or allow flames and sparks in the area where petrol is stored or where the fuel tank is refueled. After refueling make sure the fuel cap is returned securely. Be careful not to spill fuel when refuel ling. Spilled fuel or fuel vapor may ignite. If any fuel is spilled make sure the area is dry before starting the engine.

OIL LEVEL SWITCH:

The engine oil alarm is designed to prevent the operator starting the engine when the oil in the crankcase is insufficient. Running with insufficient oil will damage the engine. Once the oil level in the crankcase is too low, the engine oil alarm will stall the engine automatically to avoid damage while the engine switch is still ON.

Fig. 29                                                     Fig. 30

       

WARNING: The engine is not filled with oil. It is necessary to fill the unit before starting the engine. The engine will fail to start and damage itself without oil.

CAUTION:

• Do not run the engine with high or low oil level as this can cause engine damage.
• Only use unleaded gasoline.
• Avoid damaging your hose by ensuring it does not touch the hot exhaust during and after use.
• Avoid damaging your pump by ensuring the water supply is clean and free of any foreign objects.
• Inlet water temperature must not exceed 40 C and 20PSI.
• Never let the appliance operate for more than 2 minutes with the spray gun in the closed position.
• Never operate the pressure washer with repeated and rapid on and off movements of the trigger.

WATER SUPPLY FROM THE WATER MAIN

• Connect a water supply hose (not supplied) to the water inlet connection of the pressure washer.
• Turn on the water supply and pull the trigger until water is continually flowing out of the nozzle.

WATER SUPPLIER FROM A CONTAINER

• Unscrew the coupling part for the water inlet.
• Screw the suction hose with filter (not included) onto the water connection of the unit.
• Hang the filter in the container.
• Vent the unit before operation.
• Unscrew the high pressure line at the high pressure outlet of the unit.
• Switch on the unit and let it run until water is free of air bubbles at the high pressure outlet.
• Switch off the unit and screw on the high pressure hose again.
• Pull the trigger to eliminate trapped air and wait for a steady flow of water to emerge from the spray nozzle.

NOTE: In order to assist the first start-up it is recommended to press the trigger during the pulling of the starter handle.

 

To prevent accidental operation the trigger is fitted with a safety lock mechanism. Enable the lock when not operating the pressure washer.

Fig.17

STARTING THE ENGINE (FIG. 17-20):
Push the fuel lever A to the right (On position).

Fig.18

Push the choke lever B to the left; closing the choke for initial start-up.
NOTE: Do not use the choke if the engine or air temperature is warm.

Fig.19

Turn the engine switch clockwise to the ON position.

Fig. 20

Pull the black starting rope handle gradually until you feel resistance; then make a rapid pull.
NOTE: Return the starting rope handle gently to prevent damage to the starter assembly. Do not pull the rope all the way out as this can damage the starter assembly.

Fig. 21

Let the engine idle for a short while to preheat before pushing the choke lever C to the right.

Fig. 22

When the appliance is in operation, the speed can be adjusted by moving the throttle D control lever to the high position (indicated by a hare).
NOTE: There is a stop bracket on the throttle control lever, do not force this bracket as it can damage the engine.

Fig. 23

STOPPING THE ENGINE (Fig 23-24):
In an emergency turn the engine switch anticlockwise to the OFF position to stall the engine. To stop the appliance normally, use the following sequence.

Fig .24

Turn the engine switch anticlockwise to the OFF position. Then slide the fuel lever E to the right; OFF position.
CAUTION: When you have finished working turn off the engine. When the machine is switched off, discharge the pressure by pressing the trigger.

Adjusting The Spray Pattern

You have the choice of 5 different color coded nozzles giving you different spray patterns to choose from:

0°nozzle (Red): This nozzle delivers a pinpoint stream and is extremely powerful. It covers a very small area of cleaning. This nozzle should only be used on surface that can withstand this high pressure such as metal or concrete. Do not use on wood.

15°nozzle (Yellow): This nozzle delivers a powerful 15 degree spray pattern for intense cleaning of small areas. This nozzle should only be used on areas that can withstand the high pressure from this nozzle.

25°nozzle (Green): This nozzle delivers a 25 degree spray pattern for intense cleaning of larger areas. This nozzle should only be used on areas that can withstand pressure from this nozzle.

40°nozzle (White): This nozzle delivers a 40 degree spray pattern and a less powerful stream of water. It covers a wide area of cleaning. This nozzle should be used for most general cleaning jobs.

Low pressure nozzle (Black): This nozzle is used to apply chemicals or cleaning solutions. It has the least power stream.

NOTE: Before using the pressure washer to clean patio paving slabs it is advisable to test a small area first, some paving slabs are manufactured from inferior materials and the use of a pressure washer could damage the surface.

USING THE DETERGENT FACILITY (Fig. 26)

Fill the soap tank with pressure water detergent. Do not use washing up liquid as it contains salt. Please follow the instructions on the container. Most automobile detergents are a combination of a detergent and a wax solution. The viscosity (thickness) of the detergent will increase in cold weather. It is recommended that this type of detergent is diluted with water before filling the container. When using combination wash and wax solutions we recommend that they are diluted before use. As a general guide we would recommend a dilution rate of 50/50. However a trial and error process would determine the ideal dilution rate for a particular detergent.

NOTES: A thick viscous detergent would not flow freely from the soap tank and the residue would cause a blockage flow system. After using the detergent facility it should be flushed thoroughly using copious amount of water. To activate detergent delivery, fit the Black LOW PRESSURE nozzle to the end of the lance. Submerge the end of the detergent pick up pipe into your container of pressure water detergent. Suction and mixing will occur automatically as the water flows though the pump.

Fig. 26

Fig. 27

CLEARING A BLOCKAGE (Fig. 27)       

If at any time the flow rate stutters or is inconsistent, release the trigger and switch OFF the machine. Squeeze the trigger to relieve any pressure and check the jet in the end of the lance for any blockage. If a blockage is suspected use some wire to clean the inside of the nozzle.

Maintenance

MAINTENANCE SCHEDULE

Item		Each time	First month or 20 hours	Each month or 50 hours	Each month or 100 hours	Each year or 300 hours
Engine oil	Oil level check
	Replace
Reduction gear oil	Oil level check
	Replace
Clean	Check
	Air cleaner			1	1*
	Replace					**
Deposit cup	Clean
Spark plug	Clean, adjust
	Replace
Spark eliminator	Clean
Idling	Clean, adjust					2
Valve clearance	Clean, adjust					2
Fuel tank & fuel filter	Clean					2
Fuel supply line	Check

Note:

* Only for inside ventilating double-core carburettors.

** Only for paper core air cleaners.

1. More often than in schedule if used in dusty conditions
2. Items to be done by dealer unless you are fully trained and equipped to do so.

FUEL TANK FILTER

After 150 hours of run time or every three months, the fuel tank filter should be removed and cleaned. Remove the fuel tank filler cap and the filter, clean the filter thoroughly using environmentally friendly water based decreasing agent and re-fit.

AIR FILTER

After every 100 hours of run time or every month, the air filter should be removed and examined for deterioration and cleaned. Clean the air filter thoroughly using environmentally friendly water based decreasing agent. Allow to dry fully then replace the air filter. Never run the engine without the air filter fitted.

WATER SUCTION FILTER CHECKING

Check periodically in order to avoid deposits clogging it.

SPARK PLUG MAINTENANCE

After every 50 hours clean the spark plug with a brush. If the insulator on the spark plug is damaged replace it immediately. Check the spark plug gap with a feeler gauge, the gap should be 0.7 - 0.8mm. If adjustment is necessary bend the side electrode carefully. Check the spark plug gasket is in good condition or replace with a new one. Screw in the spark plug to the bottom first by hand and then tighten by using a spark plug wrench. If a new spark plug is used, twist a 1/2 more turn after impacting the gasket. If using the original one twist 1/8 -1/4 more turn.

WARNING:

• The muffler is very hot during running the engine and for a prolonged period after stopping. Only service after the engine cools down completely.
• Unscrew two nuts and remove the exhaust elbow from the engine body.
• Unscrew five screws from the muffler guard and take it out.
• Unscrew from the spark plug eliminator and separate from the muffler.
• Clean the spark eliminator mesh with a wire brush.
• Reinstall the spark eliminator in reverse order of removal.

CAUTION:

Be careful not to damage the spark eliminator. Never use a damaged spark eliminator.

 CARBURETOR IDLING ADJUSTMENT:

Start and pre-heat the engine until it reaches normal working temperature. Obtain standard idling by adjusting the throttle fixing screw under the engine, Standard idling: 3400±300rpm.

1. Unscrew the drain plug and drain out the fuel in the carburettor.
2. Turn off the engine switch first, disconnect the deposit cup and empty it.

NOTE:

Do not dump oil containers or discarded engine oil into the ground. For environmental protection take discarded engine oil in a closed container to a recycling station.

WARNING:

Fuel is extremely flammable and explosive under certain conditions. Keep cigarettes, naked flames and sparks away from operating site.

To keep the engine in sound condition, the user should maintain it according to the table below.

CAUTION:

Use parts that are supplied by the manufacturer, otherwise damage to the engine may occur.

WARNING:

Stop the engine before servicing. If servicing is required with the engine running ensure there is good ventilation in the area. Exhaust emissions contain toxic carbon monoxide which may cause injury or be fatal if inhaled.

ENGINE OIL REPLACEMENT

• Place the machine on a level surface and warm up the engine for several minutes. Then stop the engine.
• Remove the oil filler cap
• Place an oil pan under the engine. Remove the oil drain plug so that the oil can be completely drained. You will need to use a tube or other similar device to prevent the oil leaking onto the frame of the pressure washer. Check the oil drain plug, gasket oil filler cap and O-ring and if damaged replace.
• Reinstall the oil drain plug.
• Add engine oil up to the upper level of the dipstick.

NOTE:

Do not dump oil containers or discard engine oil into rubbish boxes or into the ground. For environmental protection take discarded engine oil in a closed container to a recycling station.

Troubleshooting

Engine Troubleshooting

FAULT		PROBABLE CAUSE				REPAIR
Engine won't start	Insufficient compression	Loose spark plug				Tighten plug
		Loose cylinder head bolt				Tighten bolt
		Damaged gasket				Replace gasket
	Sufficient compression	FUEL SYSTEM PROBLEMS
		No fuel supplied to combustion chamber		Insufficient pulling speed for starting rope		Pull rope sharply
				Foreign matter in fuel tank		Clean tank
Low engine output				Clogged fuel line		Clean fuel line with dealer’s advice
				No fuel in tank		Supply fuel
				Fuel tap not open		Open tap
		FUEL SYSTEM PROBLEMS
		Combustion chamber supplied with fuel	Poor spark		Spark plug dirty with carbon or wet with fuel	Remove carbon or dry spark plug
					Damaged spark plug	Replace spark plug
Engine runs erratically					Faulty magneto	Consult dealer
			Good spark		Improper adjustment of carburetor
					Insufficient pulling speed for starting rope	Pull rope sharply
		Wrong grade of fuel used				Check grade of fuel
		Overloaded				Check the working conditions
		Overheating

Pump Troubleshooting

TROUBLE	PROBABLE CAUSE	REMEDY
Fluctuating pressure	Pump sucking in air	Check connection are tight
	Valves dirty, worn out or seized	Contact customer helpline
	Blocked jet	Remove blockage using jet cleaning tool
Water leakage from pump	Seals worn out	Contact customer helpline
The pump does not reach the required pressure	Pump sucking in air from connections or hose	Check tightness of all connections
	Suction/delivery valves are clogged	Clear or replace valves. Have machine checked by Service Centre
	Unload valves are stuck	Loosen and re-tighten regulating screw
	Lance or nozzle worn out	Check and/or replace
Pump is running but no water delivery	Kinked inlet and or pressure hose	Check, straighten and replace if required
	Blocked inlet filter	Remove and clean filter
	Blocked jet	Remove blockage using the jet cleaning tool

Storage

If the pressure washer is not to be used or is to be stored for more than one month the following storage procedure should be carried out.

1. Drain all the fuel from the fuel tank and the carburetor ensure that all the fuel has been removed.
2. Remove the spark plug and pour approximately one tablespoon full of clean engine oil into the spark plug hole.
3. With the ignition turned OFF gently pull on the recoil starter cord several times.
4. Re-fit the spark plug and continue to pull the recoil starter cord until the piston is on the compression stroke (when resistance is felt) then stop pulling.
5. Store the pressure washer in a dry well ventilated place under a cover to prevent any dust or debris from accumulating on the pressure washer.

WINTER AND LONG TERM STORAGE:

If the pressure washer is not to be used for more than 3 months or if there is a danger of ice or frost during winter months the pump unit will require protection to prevent seizing and damage caused by freezing.

REMOVAL FROM STORAGE

Before re-using, service the engine in accordance with the instructions in the following table.

STORAGE TIME	SERVICE ITEM
Within one month	No service needed
One - Two months	Drain out original fuel of the fuel tank and refuel
Two months - One year	Drain out original fuel of the fuel tank and refuel
	Drain out the fuel in the carburettor 1
	Empty the deposit cup 2
Above One year	Drain out original fuel of the fuel tank and refuel
	Drain out the fuel in the carburettor 1
	Empty the deposit cup 2
	Move the engine from the storage place, and start up

 

TRANSPORT

Transport with the fuel switch in the off position. Ensure the engine is cooled so as to avoid the risk of burns or fire.