READ THIS FIRST!
For your safety, read this Owner's Manual and understand it thoroughly
before operating this POWER BLOWER.
General
A power blower is a high-speed power tool, not a toy. For your own safety
and the safety of others, read and be sure you understand all of the safety
precautions contained in the Owner's Manual before operating the power
blower. Retain the Owner's Manual, and make it available to all persons
who will be using the power blower. Periodically, review the manual to
refresh your understanding of the safety instructions contained in it.
Careless or improper use can cause serious injury. Obey the safety
instructions contained in this manual as well as all applicable
governmental and workplace safety standards, regulations and
ordinances. Your authorized Kawasaki dealer can show you how to
operate your power blower properly.
High pressure air flow or small blown objects could injure eyes. Do not
direct air blast towards people or animals.
Do not allow children to operate the power blower. Operators must have
sufficient size, strength and maturity to be able to lift and operate the
power blower correctly for extended periods of use. They must also be
able to read, understand and follow the safety instructions in this manual.
Exhaust fumes contain poisonous carbon monoxide gas. Operate your
power blower only outdoors in a well-ventilated area. Stop the engine
immediately if exhaust fumes cause you to experience symptoms of
headache or nausea.
Gasoline is highly flammable and can be explosive under certain
conditions. Before refueling, stop engine and allow it to cool. Do not
smoke. Make sure area is well ventilated and free from any source of
flame or sparks, including appliances with a pilot light. Wipe up fuel spills
immediately. Check for and repair any fuel leaks immediately. Check for
and repair any fuel leaks before starting power blower.
Operator
Inattention or fatigue can lead to serious injury. Never operate the power
blower under the influence of drugs or alcohol. Do not use the power
blower if you are sick or taking medication that causes drowsiness. If you
get tired while using the power blower, take a break.
Always wear appropriate protective gear to avoid injury. Eye protection in
the form of goggles or properly fitted safety glasses must be worn.
Hearing protection, such as earplugs, should also be used. Have your
hearing checked regularly. protect your hands and feet by always
wearing heavy-duty boots and non-slip gloves when operating the power
blower.
Loose clothing or hair can lead to injury. Unconfined hair and loose
articles of clothing such as scarves, neckties, jewelry, and so forth, can
be drawn into the intake of the power blower. Always wear sturdy close-
fitting long-sleeve shirts and long pants that still allow freedom of
movement.Secure hair to keep away from blower intake.
Stop the engine and make sure that the fan for blowing air is stopped
when cleaning, checking, maintenance or working on the power blower.
Gasoline is highly flammable and can burn or irritate skin. Change
clothing immediately if fuel is spilled on it. Never remove fuel cap while
the engine is running.
Be alert for signs of repetitive stress injury. Using a power blower or any
vibrating machinery over a period of time may cause numbness, burning
sensations, or other indications of injury. If you experience any such
symptoms, discontinue use of the power blower and consult your doctor.
Power Blower
Modifying the power blower may make it unsafe. Never modify your
power blower, except as advised by Kawasaki in writing. Use only
Kawasaki supplied or approved attachments and repair parts.
Recoil starter rope can injure you if released suddenly. When starting the
engine, grasp the recoil starter firmly by the grip. Do not grasp the starter
rope itself. Always control the rope during rewind into the housing.
Releasing the starter rope suddenly may allow the rope to ship around
and injure you or damage the recoil starter mechanism.
Proper maintenance is essential for safety. A well-maintained power
blower is safer and operates more efficiently. Regularly check power
blower adjustments and replace worn or damaged parts. A worn out or
damaged muffler can emit sparks and cause a fire. Increased noise
levels can lead to hearing loss. Observe the maintenance schedule in
the Owner's Manual.
Store the power blower safely to prevent fire or equipment damage. To
avoid fuel leakage and fire hazard, always empty the fuel tank and run
the carburetor dry before storing your power blower. Old fuel can clog the
carburetor and lead to hard starting or poor running conditions. Store
the power blower in a dry, secure location out of the reach of children.
When transporting the power blower in a vehicle, take precautions to
secure it against damage from falling over and fuel spillage.
EMISSION CONTROL INFORMATION
Fuel Information
THIS ENGINE IS CERTIFIED TO OPERATE ON UNLEADED REGULAR
GRADE GASOLINE ONLY.
A minimum of 87 octane of the antiknock index is recommended. The
antiknock index is posted on service station pumps in the U.S.A.
Emission Control Information
To protect the environment in which we all live, Kawasaki has incorporated
an exhaust emission control system in compliance with applicable
regulations of the United States Environmental Protection Agency, and the
California Air Resources Board. Also, depending on when your engine was
produced, it may have an assigned emissions durability period. See below
for the engine emissions durability period that may apply to your engine.
Exhaust Emission Control System
This system reduces the amount of pollutants discharged into the
atmosphere by the exhaust of this engine. The fuel, ignition and exhaust
systems of this engine have been carefully designed and constructed to
ensure an efficient engine with low exhaust pollutant levels.
Engine Emissions Compliance Period
California
Model Year - 2000 and later
Durability Period - 300 hours
All Other States
Engines less than 50 cc
Model Year - 2002 and later
Durability Period - 300 hours (Category A)
Engines 50 cc and more
Model Year 2004 and later
Durability Period - 300 hours (Category A)
If your engine has an assigned emissions durability period, it will be located on the
certification label attached to the engine (IMPORTANT ENGINE INFORMATION).
Maintenance and Warranty
Proper maintenance is necessary to ensure that your engine will continue
to have low emission levels. This Owner's Manual contains those
maintenance recommendations for your engine. Those items identified by
the Periodic Maintenance Chart are necessary to ensure compliance with
the applicable standards.
As the owner of the power blower, you have the responsibility to make
sure that the recommended maintenance is carried out according to the
instructions in this Owner's Manual at your own expense.
The Kawasaki Limited Emission Control System Warranty requires that
you return your engine to an authorized Kawasaki dealer for remedy under
warranty. Please read the warranty carefully, and keep it valid by
complying with the owner's obligations it contains.
Tampering with Emission Control System Prohibited
Federal law and California state law prohibits the following acts or the
causing thereof: (1) the removal or rendering inoperative by any person
other than for purposes of maintenance, repair, or replacement, repair, or
replacement. of any device or element of design incorporated into any new
engine for the purposes of emission control prior to its sale or delivery to
the ultimate purchaser or while it is in use, or (2) the use of the engine after
such device or element of design has been removed or rendered
inoperative by any person.
Among those acts presumed to constitute tampering are the acts listed
below:
Do not tamper with the original emission related parts.
Carburetor and internal parts
Spark plug
Magneto or electronic ignition system
Fuel Filter
Air cleaner element
1
TABLE OF CONTENTS
Specifications
Assembly and Preparation
Dealer/Owner Assembly Parts
Assembly
Fuel and Oil
Type
Mixing
Operating Instructions
Starting the Engine
Warming up
Operation
Stopping the Engine
Maintenance and Adjustment
Periodic Mainenance Chart
Air Filter Service
Fuel Filter Service
Spark Plug Service
Spark Arrester Cleaning Service
Storage
Troubleshooting Guide
Environmental Protection
ITEM Specification
Valve clearance Not applicable
Ignition Timing Unadjustable
Idle Speed 3000 r/min (rpm)
Idle Mixture Screw Unadjustable
High Mixture Screw Unadjustable
Spark Plug Gap 0.6 0.7 mm (0.024 0.028 in.)
Other specifications NO OTHER SPECIFICATION
FOREWORD
Congratulations on your purchase of a new Kawasaki Power Blower.
Please read this Owner's Manual carefully before starting your
new Power Blower so that you will be thoroughly familiar with the
proper operation of our power Blower's control, its features,
capabilities, and limitations.
To ensure a long, trouble-free life for your Power Blower, give it the
proper care and maintenance described in this manual.
For those who would like more detailed information on their Power
Blower, a Service Manual is available for purchase from any
authorized Kawasaki dealer. The Service Manual contains detailed
disassembly and maintenance information. Those who plan to do their
own work should, of course,be competent mechanics and possess the
special tools described in the Service Manual.
Keep this manual at your fingertip at all times so that you can refer to
it whenever you need information.
This manual should be considered a permanent part of the Power
Blower and should remain with the Power Blower when it is sold.
All rights reserved. No part of this publication may be reproduced
without prior written permission from Kawasaki Motors Corp., U.S.A.
This publication includes the latest information available at the time of
printing. However, there may be minor differences between the actual
product and illustrations and texts in this manual.
All products are subject to change without prior notice or obligation.
Model KRB300A
Type Backpack type
Max. air volume cfm 295
Max. air speed mph 150
Dimension L W H mm 320 350 370
(in.) (12.6 13.8 14.6)
Weight kg(lbs) 6.0(13.2)
Engine Type Forced air cooled 2-stroke, horizontal shaft, gasoline engine
Displacement mL(cu.in) 26.3(1.6)
Carburetor Diaphragm type
Ignition Solid state ignition
Spark plug NGK BPMR6A
Starter Recoil starter
Fuel Mixing ratio 50 parts of regular unleaded gasoline to 1 part of
2-stroke engine oil by volume
Tank capacity L (US qt) 0.6(0.6)
Specifications
2
2
3
3
3
4
4
4
4
4
5
5
5
6
6
6
7
7
7
7
8
8
Index No.Parts name Qty's
1 Hose Band 2
2 Flexible Pipe 1
3 Base Pipe 1
4 Middle Pipe 1
5 Pipe 1
6 Clamp 1
Assembly and Preparation
Dealer/Owner Assembly Parts
Assembly
Loosen the screw on the trigger lever assembly (A).
Fit the trigger lever assembly (A) onto the outer circumference of the
base pipe (B).
Fit the hose band (C) to each end of the flexible pipe (D).
Connect the flexible pipe (D) to the elbow pipe (E), and then tighten the
screw firmly to fix the flexible pipe (D) to the elbow pipe (E).
Connect the base pipe (B) to the flexible pipe (D), and then tighten the
screw firmly.
Clamp the corrugate tube assembly to the outside of the flexible pipe
(D) with the clamp (F) by pressing it over the flexible pipe.
Firmly tighten the screw to install the trigger lever assembly on the
base pipe (B).
Install the middle pipe (G) into the base pipe (B) and the pipe (H) in the
middle pipe (G).
1
2
3
4
5
6
A
B
C
D
E
F
G
H
3
Operating Instructions
Starting the Engine
Place the power blower on the firm ground.
Turn the engine switch (A) to the "ON" position.
Be sure the throttle lever (B) is in the fully closed (engine idle speed) position.
Slowly push the priming pump (C) several times until fuel comes out of the overflow tube (D).
The fuel that overflows by pushing the priming pump is designed to return to the fuel tank.
It is not possible to flood the engine, so push the priming pump enough times to get the engine
started
Firmly push the starter button (E) to the "Starting" position.
NOTE
A "click" can be heard when the button is firmly pushed in.
When the engine is already warm or on hot days, set the choke lever halfway or in the fully open
position.
A
B
C
D
E
Fuel and Oil
Type:
The fuel is mixture of gasoline and oil. A 50 to 1 mixture is recommended (50 parts
gasoline to 1 part oil). Mix it thoroughly before pouring it into the power blower fuel tank.
The octane rating of gasoline is a measure of its resistance to detonation or
"knocking". Use a gasoline with an octane equal to or higher than that shown in the
table below. The Antiknock Index is an average of the Research Octane No. (RON) and
the Motor Octane No. (MON). The Antiknock Index is posted on service station pumps
in the U.S.A. If the Antiknock Index is not posted, be sure the Research Octane No. is
adequate.
Recommended engine oil: High quality 2-stroke air
cooled engine oil
JASO service Clasification: FC class
Pour the measured amount of 2-stroke oil into an approval gasoline container and add
gasoline to the specified container amount.
NOTE
Do not use gasoline that has been stored longer than two months.
To ensure proper starting at low ambient temperatures, fresh winter grade fuel must
be used.
Filling the Tank:
Level the engine before fueling.
Open the fuel tank cap and fill the tank with 50:1 gas/oil pre-mixed fuel.
Pour slowly to avoid "spit back" and allow air to escape from the tank.
Mixing:
Recommended Mixing Ratio (50:1)
4
Operation
This power blower is designed to allow the operator to control the engine speed and air flow direction
using only the right hand at the trigger lever assembly.
The power blower is designed to be carried on the operator's back.
Adjust length of the straps to a comfortable operation.
NOTE
Proper use of the shoulder harness is important for effective power blower operation.
Stopping the Engine
Ordinary Stop
Return the throttle lever (D) to the idling position, and keep the engine running at idling speed for a few
seconds.
Turn the engine switch (E) to the "STOP" position.
Emergency stop
Turn the engine switch to the "STOP" position.
Return the throttle lever with the set lever to the idling position.
D
E
After allowing a few minutes warm-up period, run the engine at idling speed.
Idling speed is about 3,000 rpm
NOTE
Turn the idle screw (C) counter-clockwise for the engine speed to decrease when idling speed is
higher than 3,000 rpm.
Turn the idle screw clockwise to increase the engine idle speed to idle specification if needed.
Pull the recoil starter grip (A) slowly to engage the starter, then give a short, quick pull.
Press in the starter button (B) to the "Running" (Engine idle speed) position. If the engine fires,
but does not run continuously, repeat the starting procedure with the starter button to the "Running"
position.
NOTE
Should the engine fail to start, do not try to pull the recoil starter grip too many times with the starter
button to the "Starting" position. This will cause the fuel to flood into the cylinder and make starting
even more difficult. In this case, set the starter button to the "Running" position and repeat the
starting procedure.
After starting, vary the engine speed a few times, to draw out the remaining air from the carburetor.
Warming Up
B
C
A
5
High-pressure air will come out the
nozzle when the engine speed is not at
idle when carrying the power blower on
your back.
Air Filter Service
Clean the element every 50 hours.
Remove the screw holding the air filter cap (A), and remove the element (B).
Clean the element in a bath of kerosene or high flash-point solvent.
Soak the element in new 2-stroke engine oil, and squeeze it to remove excess oil.
Fit the element into the air cleaner base and reinstall the air filter cap screw firmly.
NOTE
Operating dusty condition may require more frequent maintenance than above.
A
B
Maintenance and Adjustment
Periodic Maintenance Chart
6
Sperage
Blower to be stored 30 days should be completely drained of fuel to prevent gum deposits forming
on essential carburetor parts, fuel filter, and fuel tank.
Clean the engine and the machine.
Remove all the fuel from the fuel tank and run the engine at idle to use up the fuel in the
carburetor.
Remove the spark plug, pour in 0.5 ml of new 2-stroke engine oil through the plug hole (H), pull the
recoil starter several times, and reinstall the spark plug.
Slowly pull the recoil starter grip until you feel resistance. This brings the piston onto the
compression stroke, closing both intake and exhaust ports by the piston.
Store the blower in a clean and dry place.
H
Lubricator
Fuel Filter Service
Clean the fuel filter element every 20 hours.
Take out the fuel filter (A) out of the fuel tank (B), and then remove the fuel filter assembly (C) from
the fuel tube (D) to keep dust from entering into the fuel filter.
Clean the fuel filter assembly in a bath of high flash-point solvent.
Dry the fuel filter assembly before installing.
NOTE
If fuel does not flow better with the fuel filter cleaned, replace the fuel filter assembly with a new
one.
Spark Plug Service
Clean or replace spark plug and reset gap (E) every 50 hours of operation.
Disconnect the spark plug cap from the spark plug and remove the spark plug.
Clean the electrodes (F) by scraping or with a wire brush to remove carbon deposits and wetness.
Inspect for cracked porcelain or other wear and damage. Replace the spark plug if necessary.
Check the spark plug gap and reset it if necessary. The gap must be between 0.6 mm (0.024 in)
and 0.7 mm (0.028 in). To change the gap, bend only side-electrode, using a spark plug tool.
Install and tighten the spark plug to 12 17 N m (1.2 1.7 kg m), then connect the spark plug
cap.
RECOMMENDED SPARK PLUG: NGK BPMR6A
Spark Arrester Cleaning Service
Clean spark arrester every 50 hours.
Remove the engine cover and the muffler by unscrewing the screws from the engine.
Take out the spark arrester (G) from the muffler, and then clean by brushing it.
Reinstall the spark arrester, muffler, and engine cover onto the engine firmly.
A
B
C
D
E
F
G
G
7
Troubleshooting Guide
Environmental Protection
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