Kubota KBL31 Owner'S/Operator'S Manual Download Page 10

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 9 

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FUEL; MIXING PETROL AND OIL

IMPORTANT: 

The engine used on this Handheld Blower is of a two-stroke design. The internal 

moving parts of the engine, i.e., crankshaft bearings, piston pin bearings and piston to cylinder wall 

contact surfaces, require oil mixed with the petrol for lubrication. Failure to add oil to the petrol or 

failure to mix oil with the petrol at the appropriate ratio will cause major engine damage which will 

void your warranty. For your fuel premix, only use a quality oil designed for two-stroke air-cooled 

engine.

FUEL MIXTURE:  

Always use a good quality two-stroke, air-cooled engine oil mixed at a ratio of 25

50:1.

MIXING INSTRUCTIONS: 

Always mix fuel and oil in a clean container approved for petrol. Mark 

the container to identify it as fuel mix for the Handheld Blower. Use regular unleaded petrol and fill 

the container with half the required amount of petrol. Pour the correct amount of oil into the con-

tainer then add the remaining amount of petrol. Close the container tightly and shake it momentarily 

to evenly mix the oil and the petrol before filling the fuel tank on the Handheld Blower. 

NOTE: 

1.  Never mix petrol and oil directly in the Handheld Blower fuel tank.

2.  Do not use National Marine Manufacturer’s Association (NMMA) or BIA certified oils.  This type 

of two-stroke engine oil does not have the proper additives for air-cooled, two-stroke engines 

and can cause engine damages.

3.  Do not use automotive motor oil. This type of oil does not have the proper additives for air- 

cooled, two-stroke engines and can cause engine damage.

When refilling the Handheld Blower fuel tank, clean around the fuel tank cap to prevent dirt and 

debris for entering the tank during cap removal.  Always shake the premix fuel container momen-

tarily before filling the fuel tank. 

Always use a spout or funnel when fueling to reduce fuel spillage.  Only fill the tank to within 6 ~ 13 

mm (1/4 ~ 1/2 inch) from the top of the tank. Avoid filling to the top of the tank filler neck.

Fuel Mixture Chart

Petrol

Two-stroke oil

50:1

25:1

ISO-L-EGC/ EGD ,JASO class FC/ FD,

or equivalent two-stroke oil 

ISO-L-EGB , JASO class FB,

or equivalent two-stroke oil

1 litre  

20 mL

40 mL

2 litres

40 mL

80 mL

5 litres

100 mL

200 mL

PETROL

HALF

PETROL

ADD REMAINING 

PETROL

SHAKE

(MIX OIL AND PETROL)

ADD OIL

FILL

OIL

PETROL

Summary of Contents for KBL31

Page 1: ...KBL31 Owner s Operator s Manual Completely read and understand this manual before using this product...

Page 2: ...ge You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure Failure to comply with the instructions...

Page 3: ...KBL31 PRODUCT DESCRIPTION PIPE B PIPE A STOP SWITCH HANDLE FAN COVER AIR INTAKE SCREEN AIR CLEANER ENGINE RECOIL STARTER SERIAL NUMBER ON THE TOP OF CRANKCASE FUEL TANK THROTTLE SETTING LEVER THROTTLE...

Page 4: ...mes can cause death Never start or run the engine inside a close room or building Hot Surface Warning Contact may cause burns During use and for some time after stopping the engine the engine is very...

Page 5: ...gs or medication 9 Never start or run the engine inside a closed room or building Breathing exhaust fumes can cause death 10 Keep handles clean of oil fuel and dirt The warning system in This manual i...

Page 6: ...ighly flammable and must be handled and stored carefully Use a container approved for storing petrol and or fuel oil mixture 2 Mix and pour fuel outdoors and where there are no sparks or flames 3 Do n...

Page 7: ...p the machine quickly in an emergency For information on how to stop the engine refer to the Starting and Stopping Procedures on page 10 12 Do not point the Handheld Blower nozzle in the direction of...

Page 8: ...s BLOWER PIPES INSTALLATION 1 Align groove in pipe A with pegs on blower housing and slide pipe A on to housing 2 Rotate pipes A clock wise to lock it into place 3 Align groove in pipe B with pegs on...

Page 9: ...moke when handling petrol and stay away from an open flame or where petrol fumes may be ignited by a spark Store petrol in an approved container and keep it out of the reach of children Never buy more...

Page 10: ...l and the petrol before filling the fuel tank on the Handheld Blower NOTE 1 Never mix petrol and oil directly in the Handheld Blower fuel tank 2 Do not use National Marine Manufacturer s Association N...

Page 11: ...nd animals away from the working area 1 Pump the primer bulb at the bottom of the carburetor until fuel can be seen flowing through the fuel return line to the fuel tank Flowing fuel should be almost...

Page 12: ...gine starts HOT RESTART To start the engine that is already warmed up hot restart or if the ambient temperature exceeds 20 C 1 Pump the primer bulb at the bottom of the carburetor until fuel can be se...

Page 13: ...the engine idle speed Turn the screw out counterclockwise to decrease the engine idle speed If idle speed adjustment is necessary and after adjustment the engine stalls stop using the Handheld Blower...

Page 14: ...he lowest throttle setting to do the job Maintenance replacement or repair of emission control devices and systems may be performed by any repair establishment or individual however war ranty repairs...

Page 15: ...of the fuel pick up hose inside the tank To replace the fuel filter 1 Make sure the fuel tank is empty 2 Loosen the fuel tank cap and pull up and remove the cap holder 3 Using a wire hook gently pull...

Page 16: ...uple of times to loosen the boot then pull the boot off of the spark plug 2 Remove the spark plug 3 Clean the electrodes with a stiff brush 4 Adjust the electrode air gap to 0 6 0 7 mm 024 028 in 5 Re...

Page 17: ...ould cause a burn HOW TO AVOID THE HAZARD Make sure the muffler is cool before inspecting and cleaning the spark arrester Spark Arrester Maintenance 1 With the engine at ambient room temperature loose...

Page 18: ...leaner cover see cooling fin cleaning 2 Twist the high tension lead boot on spark plug back and forth a couple of times to loosen the boot then pull the boot of the spark plug 3 Remove the four screws...

Page 19: ...into a suitable fuel storage container approved for petrol 2 Pump the primer bulb on the carburetor until all fuel is discharged through the clear fuel return hose 3 Run the engine to remove any fuel...

Page 20: ...Every 100 hours Check and replenish fuel Check for fuel leakage Check bolts nuts and screws for tightness or missing Check engine idle speed adjustment Clean air filter element Remove dust and dirt f...

Page 21: ...MEMO...

Page 22: ...MEMO...

Page 23: ...MEMO...

Page 24: ...lia Pty Ltd 25 29 Permas Way Truganina Vic 3029 Australia REGARDING EXHAUST GAS REGULATION This engine is certified US EPA Regulatory authority Emission standard Certificate Number United States Envir...

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