Senix BL4QL-L User manual

4-Cycle 1.62 cu in. (26.5 cc) Engine
Handheld Blower
For customer support, please call 1-800-261-3981 or send email to:
[email protected]
SAVE THIS MANUAL FOR FUTURE REFERENCE.
Operator’s manual
BL4QL-L
Model:
8458-9502014-001

2 WWW.SENIXTOOLS.COM
CONTENTS/TECHNICAL DATA
The purpose of safety symbols is to attract your
attention to possible dangers. The safety symbols,
and their explanations, deserve your careful attention
and understanding. The safety warnings do not by
themselves eliminate any danger. The instructions or
warnings they give are not substitutes for proper accident
prevention measures.
DANGER: Signals an EXTREME
hazard. Failure to obey a safety DANGER symbol WILL
result in serious injury or death to yourself or to others.
WARNING: Crude oil, gasoline, diesel
fuel and other petroleum products can expose you to
chemicals including toluene and benzene, which are
known to the State of California to cause cancer and birth
defects or other reproductive harm. These exposures can
occur in and around oil elds, reneries, chemical plants,
transport and storage operations such as pipelines,
marine terminals, tank trucks and other facilities and
equipment. For more information go to:
www.P65Warnings.ca.gov/petroleum.
WARNING: Signals a SERIOUS
hazard. Failure to obey a safety WARNING symbol CAN
result in serious injury to yourself or to others.
TECHNICAL DATA
Model Number: BL4QL-L
Engine Type: Air-Cooled, 4-Cycle
Displacement: 1.62 cu in. (26.5 cc)
Spark Plug Gap: 0.025 in. - 0.31 in. (0.6 - 0.8 mm)
Lubrication: SAE 30 Oil
Crankcase
Lubrication
Capacity:
2.03 oz. (60 ml)
Fuel Tank Capacity: 9.47 oz. (280 ml)
Approximate unit
weight (no fuel): 9.26 lbs. (4.2 kg)
Air Blowing Speed: 125 MPH (55 m/s)
Volume of Air
Moved: 410 CFM (697 m3/h)
CAUTION: Signals a MODERATE
hazard. Failure to obey a safety CAUTION symbol MAY
result in property damage or injury to yourself or to
others.
Note: Advises you of information or instructions vital to the
operation or maintenance of the equipment.
SPARK ARRESTOR NOTE
NOTE: For users on U.S. Forest Land and in the states
of California, Maine, Oregon and Washington. All U.S.
Forest Land and the state of California (Public Resources
Codes 4442 and 4443), Oregon and Washington require,
by law that certain internal combustion engines operated
on forest brush and/or grass-covered areas be equipped
with a spark arrestor, maintained in e󰀨ective working order,
or the engine be constructed, equipped and maintained
for the prevention of re. Check with your state or local
authorities for regulations pertaining to these requirements.
Failure to follow these requirements could subject you to
liability or a ne. This unit is factory equipped with a spark
arrestor. If it requires replacement, contact a Sears Parts
& Repair Service Center to install the appropriate mu󰀪er
assembly. For location and purchase information call
1-888-331-4569.
CALIFORNIA PROPOSITION 65
WARNING: This product contains
a chemical known to the state of California to cause
cancer, birth defects or other reproductive harm.
Read the operator’s manual and follow all warnings
and safety instructions. Failure to do so can result in
serious injury to the operator and/or bystanders.
CONTENTS
TECHNICAL DATA��������������������������������������������������������������������������������������������� 2
IMPORTANT SAFETY INSTRUCTIONS ����������������������������������������������������������� 3
SAFETY & INTERNATIONAL SYMBOLS���������������������������������������������������������� 5
USING THE RIGHT OIL ������������������������������������������������������������������������������������ 8
USING THE RIGHT FUEL ��������������������������������������������������������������������������������� 8
FUELING THE UNIT������������������������������������������������������������������������������������������ 9
STARTING AND STOPPING ��������������������������������������������������������������������������� 10
HOLDING THE UNIT��������������������������������������������������������������������������������������� 11
TIPS FOR BEST RESULTS����������������������������������������������������������������������������� 11
CHECKING THE OIL LEVEL��������������������������������������������������������������������������� 12
MAINTENANCE SCHEDULE �������������������������������������������������������������������������� 12
CHANGING THE OIL��������������������������������������������������������������������������������������� 13
MAINTAINING THE AIR FILTER ��������������������������������������������������������������������� 13
ADJUSTING THE IDLE SPEED ���������������������������������������������������������������������� 14
MAINTAINING THE SPARK PLUG������������������������������������������������������������������ 14
CLEANING AND STORAGE ��������������������������������������������������������������������������� 15
TROUBLESHOOTING������������������������������������������������������������������������������������� 16
PARTS ������������������������������������������������������������������������������������������������������������� 17
WARRANTY ���������������������������������������������������������������������������������������������������� 19

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SAFETY
IMPORTANT SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE OPERATING
WARNING: When using the unit, all
safety instructions must be followed. Please read these
instructions before operating the unit in order to ensure
the safety of the operator and any bystanders. Please
keep these instructions for later use.
• Read the instructions carefully. Be familiar with the
controls and proper use of the unit.
• Do not operate this unit when tired, ill or under the
inuence of alcohol, drugs or medication.
• Never allow children to operate the unit. Teens must
be trained, accompanied and supervised by an adult.
Never allow adults to operate the unit without proper
instruction.
• All guards and safety attachments must be installed
properly before operating the unit.
• Inspect the unit before use. Replace damaged parts.
Check for fuel leaks. Make sure all fasteners are in
place and secure. Replace parts that are cracked,
chipped, or damaged in any way. Do not operate the
unit with loose or damaged parts.
• Be aware of risk of injury to the head, hands and feet.
• Carefully inspect the area before starting the unit.
Remove rocks, broken glass, nails, wire, string and
other objects that may be thrown or become entangled
with the unit.
• Clear the area of children, bystanders and pets; keep
them outside a 50-foot (15 m) radius, at a minimum.
Even then, they are still at risk from thrown objects.
Encourage bystanders to wear eye protection. If you are
approached, stop the unit immediately.
• Squeeze the throttle control and check that it returns
automatically to the idle position. Make all adjustments
or repairs before using the unit.
• Do not change the engine governor settings or
overspeed the engine.
• This unit is intended for occasional, household
use only.
SAFETY WARNINGS FOR GAS UNITS
WARNING: Gasoline is highly
ammable and its vapors can explode if ignited. Take the
following precautions:
• Store fuel only in containers specically designed and
approved for the storage of such materials.
• Always stop the engine and allow it to cool before lling
the tank. Never remove the fuel tank cap or add fuel
when the engine is hot. Always loosen the fuel tank cap
slowly to relieve any pressure in the tank
before fueling.
• Always add fuel in a clean, well-ventilated outdoor area
where there are no sparks or ames. DO NOT smoke.
• Never operate the unit without the fuel cap securely
in place.
• Avoid creating a source of ignition for spilled fuel. Wipe
up any spilled fuel from the unit immediately, before
starting the unit. Move the unit at least 30 ft. (9.1 m)
from the fueling source and site before starting the
engine. DO NOT smoke.
• Never start or run the unit inside a closed room or
building. Breathing exhaust fumes can kill. Operate this
unit only in a wellventilated outdoor area.
WHILE OPERATING
• Wear safety glasses or goggles that meet current ANSI
/ ISEA Z87.1 standards and are marked as such. Wear
ear/hearing protection when operating this unit. Wear a
face mask or dust mask if the operation is dusty.
• Wear heavy long pants, boots, gloves and a long sleeve
shirt. Do not wear loose clothing, jewelry, short pants,
sandals or go barefoot. Secure hair above shoulder
level.
• Use the unit only in daylight or good articial light.
• Avoid accidental starting. Be in the starting position
whenever pulling the starter rope. The operator and
unit must be in a stable position while starting. Refer to
Starting and Stopping.
• Use the right tool. Only use this tool for its
intended purpose.
• Always hold the unit with both hands when operating.
Keep a rm grip on both handles or grips.
• Do not overreach. Always keep proper footing and
balance. Take extra care when working on stairs,
steep slopes or inclines. To avoid serious injury, do not
operate the unit while on a ladder or a roof.
• Keep hands, face, and feet away from all moving parts.
Do not touch or try to stop moving parts.
• Do not touch the engine or mu󰀪er. These parts get
extremely hot from operation, even after the unit is
turned o󰀨.
• Do not operate the unit faster than the speed needed to

4 WWW.SENIXTOOLS.COM
SAFETY
do the job. Do not run the unit at high speed when not in
use.
• Do not force the unit. It will do a better, safer job when
used at the intended rate.
• Always stop the unit when operation is delayed or when
walking from one location to another.
• Before setting the unit down, always make sure the
engine is o󰀨 and all moving parts have stopped.
• If you strike or become entangled with a foreign object,
stop the unit immediately and check for damage. Do
not operate the unit before repairing damage. Do not
operate the unit with loose or damaged parts.
• Turn the engine o󰀨 and disconnect the spark plug for
maintenance or repair.
• Use only original equipment manufacturer (OEM)
replacement parts and accessories for this unit. Use
of any other parts or accessories could lead to serious
injury to the user, or damage to the unit, and void the
warranty.
• Keep the unit clean. Carefully remove vegetation and
other debris that could block moving parts.
• To reduce re hazard, replace a faulty mu󰀪er and spark
arrestor. Keep the engine and mu󰀪er free from grass,
leaves, excessive grease or carbon build up.
• If the unit starts to vibrate abnormally, stop the
unit immediately. Inspect the unit for the cause of the
vibration. Vibration is generally an indicator of trouble.
BLOWER SAFETY
• Do not insert anything into the air openings, blower
tube or nozzle. Do not operate the unit if any of the air
openings or tubes are blocked. Keep the air openings
free from dust, lint, hair and anything else that may
reduce airow.
• Do not operate the unit without the blower tube securely
attached.
• Do not use the unit to spray liquids, especially
ammable or combustible liquids, such as gasoline. Do
not use the unit in areas where such liquids are present.
• Do not use the unit for spreading chemicals, fertilizer or
any other substance that may contain toxic materials.
• Do not set the unit down on any surface while the unit is
running. Debris can be picked up by the air intake and
thrown out the discharge opening, resulting in damage
to the unit or property or causing serious injury to
bystanders or the operator.
• During operation, never point the unit in the direction of
people, animals, windows or automobiles. Always direct
blowing debris away from people, animals, windows or
automobiles.
• Use extra caution when blowing debris near solid
objects, such as trees, walls, fences, etc. When
possible, blow away from such objects, not toward them.
• Take care when working near valuable plants. The force
of the blown air could damage tender plants.
• Never attempt to clear a clogged air intake opening
while the unit is running.
• Keep hair, ngers and all other body parts away from
moving parts and openings.
OTHER SAFETY WARNINGS
• Maintain the unit with care.
• All service, other than the maintenance procedures
described in this manual, should be performed by a
Sears or other qualied service dealer.
• Never remove, modify or make inoperative any safety
device furnished with the unit.
• Before inspecting, servicing, cleaning, storing,
transporting or replacing any parts on the unit:
1. Stop the unit.
2. Make sure all moving parts have stopped.
3. Allow the unit to cool.
4. Disconnect the spark plug wire.
• Secure the unit while transporting.
• Never store the unit with fuel in the tank, inside a
building where fumes may reach an open ame (pilot
lights, etc.) or sparks (switches, electrical motors, etc.).
• Store the unit in a dry place, secured or at a height to
prevent unauthorized use or damage. Keep the unit out
of the reach of children.
• Never douse or squirt the unit with water or any
other liquid.
• Keep handles dry and clean (free from debris, oil and
grease).
• Clean the unit after each use. Refer to Cleaning and
Storage. Do not use solvents or strong detergents.
• Keep these instructions. Refer to them often and use
them to instruct other users. If you loan this unit to
others, also loan them these instructions.
SAVE THESE INSTRUCTIONS

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SAFETY
SAFETY & INTERNATIONAL SYMBOLS
This operator’s manual describes safety and international symbols and pictographs that may appear on this product. Read
the operator’s manual for complete safety, assembly, operating and maintenance and repair information.
SAFETY ALERT SYMBOL
Indicates danger, warning or caution. May
be used in conjunction with other symbols
or pictographs.
READ OPERATOR’S MANUAL
WARNING: Read the
operator’s manual(s) and follow all
warnings and safety instructions. Failure
to do so can result in serious injury to the
operator and/or bystanders.
WEAR EYE AND HEARING
PROTECTION
WARNING:Thrown objects
and loud noise can cause severe eye
injury and hearing loss. Wear eye
protection meeting current ANSI / ISEA
Z87.1 standards and ear protection when
operating this unit. Use a full face shield
when needed.
WEAR HAND PROTECTION
Wear heavy duty work gloves to protect
hands.
WEAR FOOT PROTECTION
Wear boots with slip-resistant and
puncture-resistant soles.
UNLEADED FUEL
Always use clean, fresh unleaded fuel.
OIL
Refer to operator’s manual for the proper
type of oil.
DO NOT USE E85 FUEL IN THIS UNIT
WARNING: It has been
proven that fuel containing greater than
10% ethanol will likely damage this
engine and void the warranty.
ON/OFF STOP CONTROL
ON / START / RUN
ON/OFF STOP CONTROL
OFF or STOP
PRIMER BULB
Push primer bulb, fully and slowly,
10 times.
CHOKE CONTROL
1. • RUN choke position
2. • PARTIAL choke position
3. • FULL choke position
THROWN OBJECTS CAN CAUSE
SEVERE INJURY
WARNING: Small objects
can be propelled at high speed, causing
injury.
KEEP BYSTANDERS AWAY
WARNING: Keep all
bystanders, especially children and pets,
at least 50 feet (15 m) from the
operating area.
HOT SURFACE
WARNING:Do not touch
a hot mu󰀪er or cylinder. You may get
burned. These parts get extremely hot
from operation. When turned o󰀨, they
remain hot for a short time.
BLOWERS – ROTATING IMPELLER
BLADES CAN CAUSE SEVERE
INJURY
WARNING:Stop the unit
and allow the impeller to stop before
changing tubes, cleaning or performing
any maintenance. Keep hands and feet
away from moving parts.

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COMPONENT LOCATION
COMPONENT LOCATION
APPLICATIONS
• Cleaning yards, garages, driveways, porches, patios,
around walls, fences and more
On/Off Switch
Throttle Control
Starter Rope Grip
Air Filter Cover
Primer Bulb
Fuel Cap Lower Blower Tube
Upper Blower Tube
Oil Fill Plug
Handle
Muffler
Choke Lever
Spark
Plug Cover
INCLUDED PARTS
Quantity Item Quantity Item
1 Operator’s Manual 1 60 ml bottle
1 Torx wrench 1 Warranty statement
1 Spark plug wrench 1 EPA warrantly letter

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ASSEMBLY
ASSEMBLY
WARNING: To avoid serious personal
injury and damage to the unit, shut the unit o󰀨 before
removing or installing blower tubes or nozzles.
WARNING: To prevent serious
personal injury, never operate the unit without the upper
blower tube rmly installed.
INSTALLING THE BLOWER TUBE(S)
Always install the upper blower tube. The lower blower
tube
is optional.
Installing the Upper Blower Tube
1. Align the slots on the upper end of the upper blower tube
with the bumps on the blower outlet (Fig. 1).
2. Insert the upper blower tube into the blower outlet
(Fig. 1).
3. While holding the handle, twist the upper blower tube
clockwise until it locks into place (Fig. 1).
Installing the Lower Blower Tube
1. Align the slots on the lower blower tube with the bumps
on the lower end of the upper blower tube (Fig. 2).
2. Install the lower blower tube onto the upper blower
tube (Fig. 2).
3. While holding the upper blower tube, twist the lower
blower tube clockwise until it locks into place (Fig. 2).
REMOVING THE BLOWER TUBE(S)
Removing the Upper Blower Tube
1. Twist the upper blower tube counterclockwise until it
unlocks from the blower outlet (Fig. 3).
2. Remove the upper blower tube from the blower outlet.
Removing the Lower Blower Tube
1. While holding the upper blower tube, twist the lower
blower tube counterclockwise until it unlocks from the
blower tube.
2. Remove the lower blower tube from the upper blower
tube.
Blower
Outlet
Upper
Blower Tube
Handle
Slot
Bumps
Fig. 1
Upper
Blower Tube
Lower Blower Tube
Bump
Slot
Fig. 2
Upper
Blower Tube
Slot
Fig. 3

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OIL AND FUEL
USING THE RIGHT OIL
Use a high-quality SAE 30 weight oil. DO NOT use dirty
oil. Failure to use clean oil of the correct type can cause
premature engine wear and failure.
ADDING OIL: INITIAL USE
WARNING: OVERFILLING THE
CRANKCASE MAY CAUSE SERIOUS PERSONAL
INJURY. Check the oil level before each use. The
importance of maintaining the proper oil level cannot
be overemphasized. Change the oil according to the
Maintenance Schedule.
Note: This unit was shipped without oil in the crankcase.
Oil must be added before starting the unit.
Note: This unit comes with a 2.03 uid oz. (60 ml)
container
of oil.
1. Set the unit on a at, level surface.
2. Unscrew the oil ll plug (Fig. 4).
3. Pour the entire container of oil into the oil ll hole (Fig.
4).
DO NOT overll. Refer to Checking the Oil Level.
Note: Never add oil to the fuel tank. This unit has a four-
cycle engine. DO NOT mix oil with gasoline.
4. Wipe up any oil that may have spilled.
5. Reinstall the oil ll plug.
Note: Make sure the O-ring is in place on the oil ll plug
(Fig. 4).
USING THE RIGHT FUEL
The use of old fuel is the most common cause of
performance problems. Use only fresh, clean unleaded
gasoline.
Note: This unit has a four-cycle engine. DO NOT mix oil
with gasoline.
Denition of Blended Fuels
Today’s fuels are often a blend of gasoline and oxygenates
such as ethanol, methanol or MTBE (ether). Alcohol-
blended fuel absorbs water. As little as 1% water in the fuel
can make fuel and oil separate, forming acids when stored.
ALWAYS use fresh fuel (less than 30 days old).
Note: Dispose of old fuel according to federal, state and
local regulations.
Using Blended Fuels
If using a blended fuel:
• Always use fresh unleaded gasoline
• Use the fuel additive STA-BIL®or an equivalent
WARNING: DO NOT USE E85 FUEL
IN THIS UNIT. It has been proven that fuel containing
greater than 10% ethanol will likely damage this engine
and void the warranty.
Using Fuel Additives
Use a fuel additive, such as STA-BIL Fuel Stabilizer or an
equivalent, to inhibit corrosion and minimize gum deposits.
Add 0.8 oz. (23 ml) of fuel additive per gallon of fuel,
according to the instructions on the container. NEVER add
fuel additives directly to the unit’s fuel tank.
O-Ring
Oil Fill Plug
Oil Fill Hole
Fig. 4

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OIL AND FUEL
FUELING THE UNIT
WARNING: Gasoline is extremely
ammable. Ignited vapors may explode. Always stop the
engine and allow it to cool before lling the fuel tank. Do
not smoke while lling the tank. Keep sparks and open
ames at a distance from the area.
WARNING: Remove the fuel cap
slowly to avoid injury from fuel spray. Never operate the
unit without the fuel cap securely in place.
WARNING: Add fuel in a clean,
well ventilated outdoor area. Wipe up any spilled fuel
immediately. Avoid creating a source of ignition for spilled
fuel. Do not start the engine until fuel vapors dissipate.
1. Position the unit with the fuel cap facing up.
2. Slowly remove the fuel cap.
3. Place the fuel container spout into the fuel tank ll hole
and ll the tank.
Note: Do not overll the tank.
4. Wipe up any fuel that may have spilled.
5. Reinstall the fuel cap.
6. Move the unit at least 30 ft. (9.1 m) from the fuel
container and the fueling site before starting the engine.

10 WWW.SENIXTOOLS.COM
STARTING AND STOPPING
STARTING AND STOPPING
WARNING: Operate this unit only in a
well-ventilated outdoor area. Carbon monoxide exhaust
fumes can be lethal in a conned area.
WARNING: Avoid accidentally starting
the unit. To avoid serious injury, the operator and the unit
must be in a stable position when pulling the starter rope
(Fig. 7).
WARNING: When starting the unit,
make sure it is not directed toward people, animals,
windows, automobiles or loose debris.
WARNING: Be sure to read the fuel
information in the safety rules before you begin. If you
do not understand the safety rules, do not attempt to fuel
your unit.
STARTING INSTRUCTIONS
1. Check the oil level. Refer to Checking the Oil Level.
2. Fill the fuel tank. Refer to Fueling the Unit.
Note: There is no need to turn the unit on. The On/O󰀨
switch is in the ON ( I ) position at all times (Fig. 5).
3. Slowly press and release the primer bulb 10 times
(Fig. 6).
4. Move the choke lever to the Full Choke position (Fig. 6).
5. DO NOT squeeze the throttle control. Crouch in the
starting position (Fig. 7).
6. DO NOT squeeze the throttle control. Pull the starter
rope with a controlled and steady motion 3 to 5 times to
start the engine (Fig. 7).
7. Allow the engine to warm up less than 10 seconds, then
squeeze the throttle control to return the choke to the
Choke O󰀨 position and operate the blower.
IF... the engine does not start, begin the starting procedure
with step 3.
IF... the engine fails to start after a few attempts, squeeze
the throttle control to return move the choke to the Choke
O󰀨 position. Pull the starter rope with a controlled and
steady motion 3 to 8 times. The engine should start. If it
does not, repeat this instruction.
IF THE UNIT WAS RUN FOR 10-15 MINUTES AND THE
ENGINE IS HOT... perform steps 3, 5, 6, 7 to restart the
engine. Squeeze and hold the throttle control. Run the unit
for 2-5 minutes, or as needed. The unit may be used during
this time.
If the engine speed uctuates, move the the choke lever to
the Full Choke position and run the unit for 2-5 minutes, or
as needed. The unit may be used during this
time. Then squeeze and hold the throttle control to operate
the blower.
Throttle Control
Handle
On (I) Off (=STOP)
Fig. 5
Primer Bulb
Full Choke
Choke Off
Fig. 6
Starting
Position
Starter Rope Grip
Fig. 7

11WWW.SENIXTOOLS.COM
OPERATION
STOPPING INSTRUCTIONS
1. Release the throttle control and allow the engine to idle.
2. Press and hold the On/O󰀨 switch in the OFF (STOP)
position untilthe engine comes to a complete stop
(Fig. 5).
OPERATION
WARNING: Clear the area of children,
bystanders, and pets. At a minimum, keep all children,
bystanders, and pets outside a 15 m (50 ft) radius;
outside the 15 m (50 ft) zone,
there is still a risk of injury from thrown objects.
Bystanders should be encouraged to wear eye
protection. If you are approached, stop the engine.
WARNING: To prevent serious
personal injury, never operate the unit without the upper
blower tube rmly installed.
WARNING: Always wear eye, hearing,
hand, foot and body protection to reduce the risk of injury
when operating this unit. Wear a face mask or dust mask
if the operation is dusty.
WARNING: To reduce the risk of
injury associated with contacting rotating parts, stop the
engine before installing or removing attachments. Do not
operate without guards in place. Always disconnect the
spark plug before performing maintenance or accessing
movable parts.
OPERATING TIPS
• While vacuuming or blowing debris, hold the unit with
the mu󰀪er side facing away from your body and clothes.
• To reduce the risk of hearing loss associated with sound
level(s), hearing protection is required.
• To reduce the risk of injury associated with contacting
rotating parts, stop the engine before installing or
removing attachments. Do not operate without guard(s)
in place.
• Operate power equipment only at reasonable hours-
not early in the morning or late at night when people
might be disturbed. Comply with times listed in local
ordinances. Usual recommendations are 9:00 a.m. to
5:00 p.m., Monday though Saturday.
• To reduce noise levels, limit the number of pieces of
equipment used at any one time.
• To reduce noise levels, operate power blowers at the
lowest possible throttle speed to do the job.
• Use rakes and brooms to loosen debris before blowing.
• In dusty conditions, slightly dampen surfaces when
water is available.
• Conserve water by using power blowers instead of
hoses for many lawn and garden applications, including
areas such as gutters, screens, patios, grills, porches,
and gardens.
• Watch out for children, pets, open windows, or freshly
washed cars. Blow debris away safely.
• Use the full blower nozzle extension so the air stream
can work close to the ground.
• After using blowers and other equipment, CLEAN UP!
Dispose of debris in trash receptacles.
HOLDING THE UNIT
• Stand in the operating position (Fig. 8). Stand up
straight. Do not bend over.
• Keep feet apart and rmly planted.
• Hold the unit in front of, and away from, your body
(Fig. 8).
WARNING: To prevent serious
personal injury or damage to the unit, DO NOT hold the
unit at your side (Fig. 8). The engine may be extremely
hot. DO NOT block the air intake.
Handle
Air Intake
Fig. 8

12 WWW.SENIXTOOLS.COM
MAINTENANCE
MAINTENANCE
GENERAL RECOMMENDATIONS
The warranty on this unit does not cover items that have
been subjected to operator abuse or negligence. To receive
full value from the warranty, the operator must maintain unit
as instructed in this manual. Various adjustments will need
to be made periodically to properly maintain your unit.
WARNING: To avoid serious personal
injury, always stop the engine and allow it to cool before
cleaning or maintaining the unit. Never perform cleaning
or maintenance while the unit is running. Disconnect
the spark plug wire to prevent the unit from starting
accidentally.
WARNING: Wear protective clothing
and observe all safety instructions to prevent serious
personal injury.
CHECKING THE OIL LEVEL
WARNING:OVERFILLING THE
CRANKCASE MAY CAUSE SERIOUS PERSONAL
INJURY. Check the oil level before each use. The
importance of maintaining the proper oil level cannot be
overemphasized.
1. Stop the engine and allow it to cool.
2. Set the unit on a at, level surface, such as a
workbench or table.
Note: Failure to keep the engine level may result in oil
overll.
3. Clean the area around the oil ll plug (Fig. 11) to prevent
debris from entering the oil ll hole.
4. Unscrew the oil ll plug.
5. Look into the oil ll hole; use a ashlight if necessary.
Add oil to the oil ll hole until the oil level is visible
on the rst thread of the oil reservoir (Fig.10). If the
oil level is too low, add oil to the oil ll hole until the oil
level touches the bottom thread of the oil ll hole.
Note: DO NOT overll the crankcase.
6. Wipe up any oil that may have spilled.
7. Reinstall the oil ll plug.
Note: Make sure the O-ring is in place on the oil ll plug
(Fig. 9).
MAINTENANCE SCHEDULE
Perform these required maintenance procedures at the
frequency stated in the table. These procedures should
also be a part of any seasonal tune-up. Some maintenance
procedures may require special tools or skills. If unsure
about these procedures, take the unit to a Sears or other
qualied service dealer. Call 1-800-261-3981 for more
information.
Note: Maintenance, replacement, or repair of the emission
control devices and system may be performed by a
qualied service dealer.
Call 1-800-261-3981 for more information.
Note: Please read the California/EPA statement that came
with the unit for a complete listing of terms and
coverage for the emissions control devices, such as
the spark arrestor, mu󰀪er, carburetor, etc.
FREQUENCY MAINTENANCE REQUIRED
Every 10 hours • Clean and re-oil the air lter. Refer to
Maintaining the Air Filter.
After the rst
10 hours and
at 38 hours
• Change the oil. Refer to Changing
the Oil.
• Have the rocker arm clearance
checked by a Sears or other
qualied service dealer.
• Check the spark plug condition and
gap. Refer to Maintaining the Spark
Plug.
O-Ring
Oil Fill Plug
Oil Fill Hole
Fig. 9
Oil Fill Line Oil Visible on
First Thread
Fig. 10

13WWW.SENIXTOOLS.COM
MAINTENANCE
CHANGING THE OIL
Change the oil while the engine is still warm. The oil will
ow freely and carry away more impurities.
1. Clean the area around the oil ll plug (Fig. 9) to prevent
debris from entering the oil ll hole.
2. Unscrew the oil ll plug.
3. Tip the unit vertically to pour the oil out of the oil ll
hole and into a container (Fig. 11). Allow ample time for
complete drainage.
Note: Dispose of the old oil according to federal, state and
local regulations.
4. Wipe up any oil that may have spilled.
5. Pour 2.03 .oz. (60 ml) of SAE 30 oil into the oil ll hole.
Note: DO NOT overll. Refer to Checking the Oil Level.
6. Wipe up any oil that may have spilled.
7. Reinstall the oil ll plug.
Note: Make sure the O-ring is in place on the oil ll plug
(Fig. 9).
MAINTAINING THE AIR FILTER
Failure to maintain the air lter can result in poor
performance or can cause permanent damage to
the engine. Engine failure due to improper air lter
maintenance is not covered by the product warranty.
Cleaning the Air Filter
1. Open the air lter cover: press in the lock tab and swing
the air lter cover to the right (Fig. 12).
2. Remove the air lter (Fig. 12).
3. Wash the air lter in detergent and water. Rinse the air
lter thoroughly and allow it to dry.
4. Lightly coat the air lter with clean SAE 30 oil.
5. Squeeze the air lter to spread and remove excess oil.
6. Reinstall the air lter (Fig. 12).
Note: Operating the unit without the air lter and air lter
cover will VOID the warranty.
7. Close the air lter cover: insert the tabs on the air lter
cover into the slots on the backplate. Swing the air lter
cover to the left and press it closed until the lock tab
snaps into place
(Fig. 12).
Fig. 11
Air Filter
Air Filter Cover
Lock Tab
Tabs/Slots
Backplate
Fig. 12

14 WWW.SENIXTOOLS.COM
MAINTENANCE
ADJUSTING THE IDLE SPEED
If the engine will not idle properly:
1. Start the engine. Refer to Starting and Stopping.
2. Let the engine idle. If the engine stops, increase the idle
speed. Use a small Phillips screwdriver to turn the idle
speed screw clockwise, 1/8 of a turn at a time, until the
engine idles smoothly (Fig. 13).
MAINTAINING THE SPARK PLUG
1. Stop the engine and allow it to cool.
2. Grasp the spark plug boot rmly and pull it from the
spark plug (Fig. 14).
3. Clean around the spark plug. Remove the spark plug
from the cylinder head with a 5/8-inch socket, turning
counterclockwise.
WARNING: Do not sand blast, scrape
or clean spark plug electrodes. Grit in the engine could
damage the cylinder.
4. Inspect the spark plug. If the spark plug is cracked,
fouled or dirty, replace it with replacement part Newstar
AM5C, or a NGK CMR5H, or an equivalent spark plug.
5. Use a feeler gauge to set the air gap at
0.025 - 0.31 in. (0.6 mm - 0.8 mm) (Fig. 15).
6. Install the spark plug in the cylinder head. Tighten the
spark plug with a 5/8-inch socket, turning it clockwise
until snug.
Note: If using a torque wrench, torque to:
159 in.•lb. (18 N•m). Do not over tighten.
7. Reattach the spark plug boot.
Idle Speed Screw
Fig. 13
Spark Plug Boot
Fig. 14
0.025 in. - 0.31 in.
(0.6 mm - 0.8 mm)
Fig. 15

15WWW.SENIXTOOLS.COM
MAINTENANCE
CLEANING AND STORAGE
CLEANING
WARNING: To avoid serious personal
injury, always stop the engine and allow it to cool before
cleaning or maintaining the unit.
Use a small brush to clean the outside of the unit. Do not
use strong detergents. Household cleaners that contain
aromatic oils such as pine and lemon, and solvents such
as kerosene, can damage plastic. Wipe o󰀨 any moisture
with a soft cloth.
STORAGE
• Never store a fueled unit where fumes may reach an
open ame or spark.
• Allow the engine to cool before storing.
• Lock up the unit to prevent unauthorized use or
damage.
• Store the unit in a dry, well-ventilated area.
• Store the unit out of the reach of children.
Long-term Storage
1. Remove the fuel cap, tip the unit and drain the fuel into
an approved container. Reinstall the fuel cap.
2. Start the engine and allow it to run until it stalls.
This ensures that all fuel has been drained from the
carburetor.
3. Allow the engine to cool. Remove the spark plug and put
5 drops of any high-quality motor oil into the cylinder.
Pull the starter rope slowly to distribute the oil. Reinstall
the spark plug.
4. Thoroughly clean the unit and inspect it for any loose or
damaged parts. Repair or replace damaged parts and
tighten loose screws, nuts or bolts.
Preparing the Unit for Use after Long-term Storage
1. Remove the spark plug. Tip the unit and drain all of the
oil from the cylinder into an approved container. Reinstall
the spark plug.
2. Change the oil. Refer to Changing the Oil.
Note: Do not use fuel that has been stored for more than
30 days. Dispose of old fuel and oil according to
federal, state and local regulations.
FUEL SYSTEM
Empty the fuel system before storage for 30 days or longer.
Drain the gas tank, start the engine and let it run until the
fuel lines and carburetor are empty. Use fresh fuel next
season. Under OIL AND FUEL section of this manual,
see message labeled IMPORTANT regarding the use of
blended and E85 fuel in your engine.
Fuel stabilizer is an acceptable alternative in minimizing
the formation of fuel gum deposits during storage. Add
stabilizer to gasoline in fuel tank or fuel storage container.
Follow the mix instructions found on stabilizer container.
Run engine at least 3 minutes after adding stabilizer.
ENGINE
• Remove spark plug and pour 1 teaspoon of engine oil
through the spark plug opening.
Slowly pull the starter rope 8 to 10 times to distribute oil.
• Replace spark plug with new one of recommended type
and heat range.
• Clean air lter.
• Check entire unit for loose screws, nuts, and bolts.
Replace any damaged, broken, or worn parts.
• At the beginning of the next season, use only fresh fuel.
OTHER
• Do not store gasoline from one season to another.
• Replace your gasoline can if it starts to rust.

16 WWW.SENIXTOOLS.COM
TROUBLESHOOTING
TROUBLESHOOTING
PROBLEM SOLUTION
THE ENGINE WILL NOT START
The fuel tank is empty Fill the fuel tank with fresh fuel
The primer bulb was not pressed enough Press the primer bulb 10 times
The fuel is old (over 30 days) Drain the fuel tank and add fresh fuel
The spark plug is fouled Replace the spark plug
The engine is hot Refer to the IF... THE ENGINE IS HOT instructions in the
Starting and Stopping section
THE ENGINE WILL NOT IDLE
The air lter is dirty Clean or replace the air lter
The fuel is old (over 30 days) Drain the fuel tank and add fresh fuel
The idle speed is incorrect Adjust the idle speed
THE ENGINE WILL NOT ACCELERATE
The fuel is old (over 30 days) Drain the fuel tank and add fresh fuel
The air lter is dirty Clean or replace the air lter
THE ENGINE LACKS POWER OR STALLS
The fuel is old (over 30 days) Drain the fuel tank and add fresh fuel
The air lter is dirty Clean or replace the air lter
The spark plug is fouled Replace the spark plug
If further assistance is required, take the unit to a qualied service dealer.

17WWW.SENIXTOOLS.COM
PARTS
PARTS
EXPLODED VIEW

18 WWW.SENIXTOOLS.COM
PARTS
No. Part # Description Qty. No. Part # Description Qty.
1 202030001505 Fan hood 1 37-10 201999001385 Choke button 1
2 207019900465 Spring 1 38 199064000051 Carburetor 1
3 207310100310 Screw 17 39 299999000246 Enter air washer 2
4 202016003554 Left housing 1 40 299999000412 Enter air washer 1
5 207320100023 Nut 1 41 202094000235 Inlet air pipe 1
6 207059900192 Big washer 1 42 199999001376 Cylinder components 1
7 207109900127 Fan blade 1 43 199999001285 Oil dipstick components 1
8 207310100739 Screw 4 44 207269900052 Piston pin check ring 2
9 202024002261 Hand shank 1 45 201999001277 Piston pin 1
10 202016003560 Right housing 1 46 201109000039 Piston 1
11 202015000306 Spindle cover 1 47 201110000044 Piston ring 1
12 201088000018 Flywheel 1 48 299999000244 Cylinder pad 1
13 201026000354 Pin roll 1 49 201999000685 Low Arm 2
14 207059900215 Washer 2 50 207199900092 Pin roll 1
15 202002000046 Timing gears 1 51 207310100610 Screw 2
16 202999001063 Oil seal 1 52 199037000036 Igniter 1
17 201126000054 Crank case 1 53 201999001212 Wind screen 1
18 207310100736 Screw 3 54 207310100734 Screw 2
19 299999000404 Crankcase washer 1 55 199999001084 Stopping wire 1
20 202030001470 Crankcase cover 1 56 207310101122 Screw 1
21 201038000006 Bent axle 1 57 202024002262 Right The handle 1
22 202017000036 Shock pad 2 58 199081000092 Power wire 1
23 207350100042 Cylindrical pin 4 59 202037000006 Fender bracket 1
24 207390200006 Bearing 6001 1 60 207019900460 Torsional spring 2
25 201126000054 Crank case 1 61 202024002263 Left The handle 1
26 199124000183 Oil box assembly 1 62 202017000055 Shock pad 1
27 202999001495 Oil seal 1 63 207180200023 The rocker switch 1
28 201999000919 Grinding pad 1 64 202094000239 Blowpipe 1 1
29 199999001067 Starter bowl assembly 1 65 202094000240 Blowpipe 2 1
30 207320100024 Hexagon nut 1 66 202004000880 Throttle trigger 1
31 201999001246 Insulating lm 1 67 207310100740 Screw 2
32 199096000077 Start assembly 1 68 199113000045 Mu󰀨er assembly 1
33 207310100310 Screw 13 69 299999000367 Mu󰀪er pad 1
34 202083001017 Filter cover 1 70 201091000024 Tappet 2
35 299999000359 Air lter screen 1 71 199999000116 Rocker assembly 2
36 207310100741 Screw 2 72 207199900091 pin roll 1
37 207019900457 Air lter 1 73 207310100738 Screw 4
37-1 202999001771 Choke valve board 1 74 299999000364 Head gasket 1
37-2 202099000015 Slide block 1 75 201058000226 Cylinder head 1
37-3 207310100322 Flange tapping screw 2 76 202030001508 Cover shell 1
37-4 207289900150 Axle sleeve 1 77 201999001165 Washer 1
37-5 207310100179 Self tapping screw 1 78 202023000084 Rubber stopper 1
37-6 202090000200 Air lter holder 1 79 202094000222 Breather pipe 1
37-7 207019900457 Torsional spring 1 80 199999001291 Sparking plug 1
37-8 201999000762 Spring 1 81 202165000585 Fuel tank cap 1
37-9 202004000879 Dial button 1 For replacement parts, email: [email protected].

19WWW.SENIXTOOLS.COM
WARRANTY
WARRANTY
LIMITED TWO-YEAR WARRANTY
3-year limited warranty on all Senix X5 series outdoor battery powered equipment and charger. 3-year limited warranty on
all Senix X5 batteries.*
FOR THREE YEARS from the original date of retail purchase this Senix product is warranted against defects in materials
or workmanship on power tools and chargers. Defective product will receive free repair.*
FOR THREE YEARS from the original date of retail purchase this Senix product is warranted against defects in materials
or workmanship on batteries. Defective product will receive free repair.*
This warranty does not cover normal wear of parts and components such as cutting chain, line or blades nor does this
warranty cover product transportation cost for warranty or service.
Warranty is subject to the following conditions:
• Warranty applies to the original purchaser at retail and is not transferrable*
• Warranty Registration at www.senixtools.com
• The tool has not been misused, abused, neglected, altered, modied or repaired by anyone other than an authorized
service center
• Only genuine Senix accessories have been used with or on this product
• The tool has been subjected to normal wear and tear
• The tool has not been used for trade or professional purposes
• The tool has not been used for rental purposes
• This warranty only covers defects arising under normal usage and does not cover any malfunction, failure or defect
resulting from misuse, abuse (including overloading the product, exposure to water or rain) accidents, neglect or lack of
proper installation and improper maintenance or storage.
To locate your nearest Senix service provider call toll free at 800-261-3981 or email us at [email protected].
Additional Limitations
Any implied warranty granted under state law, including warranties of merchantability or tness for a particular purpose,
are limited to three years from the date of purchase on power tools and chargers and seven years on batteries. The
manufacturer is not responsible for direct, indirect, incidental or consequential damages. Some states and provinces do
not allow limitations on how long an implied warranty lasts and/or do not allow the exclusion or limitation of incidental
damages, so the above limitations and exclusions may not apply to you. This warranty gives you specic legal rights, and
you may also have other rights which vary from state to state or province to province.
The YAT USA declines any responsibility in regard to civil liability arising from abusive use or not in conformity with proper
use and maintenance of the machine as described in the operator’s manual.
YAT USA is not responsible for direct, indirect, incidental or consequential damages.
After the purchase, the manufacturer recommends proper maintenance of the machine and to read the operator’s manual
before using the machine.
*Original purchase receipt may be required for proof of purchase
For customer service contact us toll free at 1-800-261-3981 or Senixtools.com.
YAT USA, Inc. 9048 E Bahia Dr, suite 105, Scottsdale, AZ 85260

20 WWW.SENIXTOOLS.COM
GENERAL INFO