Craftsman 316.79197 User Manual
Operator's Manual
®
4-CycJe
WEEDWACKER® GAS TRIMMER
Model No. 316.791970
INCREDI.PULL TM
RNGEL/EVABLS STARTING E A S E
with MAXFIRE@IGNITION _
CAUTION: Before using
this product, read this
manual and follow all
safety rules and operating
instructions.
Sears, Roebuck and Co., Hoffman Estates, IL 60179, U.S.A.
Visit our website: www.sears.corn/craftsman
,,,SAFETY
* ASSEMBLY
o OPERATION
" MAINTENANCE
PARTS LIST
ESPANOL, R 17
769-03546
CALIFORNIA PROPOSITION 65 WARNING 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
THE ENGINE EXHAUST FROM THIS PRODUCT CONTAINS
CHEMICALS KNOWN TO THE STATE OF CALiFORNiA TO
CAUSE CANCER, BIRTH DEFECTS OR OTHER
REPRODUCTIVE HARM.
TABLE OF CONTENTS
Rules for Safe Operation .......................... 2
Warranty Information ............................. 4
Assembly Instructions ............................ 5
Know Your Unit ................................. 5
Oil and Fuel Information ........................... 6
Starting/Stopping Instructions ...................... 7
Operating Instructions ............................ 8
Maintenance and Repair Instructions ............... 10
Cleaning and Storage ........................... 13
internal combustion engines operated on forest brush and/or
grass-covered areas be equipped with a spark arrestor,
maintained in effective working order, or the engine be
constructed, equipped and maintained for the prevention of
fire. 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 fine. This unit is
factory equipped with a spark arrestor. If it requires
replacement, ask a Sears or other qualified service dealer to
install the Accessory Part #753-05297 Spark Arrestor Kit.
WARNING: When using the unit, you must follow
the safety rules. 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.
Troubleshooting Chart ........................... 14
Specifications ................................. 14
Parts List .................................... E17
Service Numbers ........................ Backcover
All information, illustrations, and specifications in this manual
are based on the latest product information available at the
time of printing. We reserve the right to make changes at any
time without notice.
,, iMPORTANT SAFETY INSTRUCTIONS ,,
READ ALL INSTRUCTIONS BEFORE OPERATING
= 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 influence
of alcohol, drugs, or medication.
Children and teens under the age of 15 must not use the unit,
except for teens guided by an adult.
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.
Use only Hassle-Free TM XRTA QUIET Spiral Line. Never use
metal-reinforced line, wire or rope. These can break off and
become dangerous projectiles.
Be aware of risk of injury to the head, hands and feet.
Clear the area to be cut before each use. Remove rocks,
broken glass, nails, wire, string and other objects which may be
thrown or become entangled in the cutting attachment. 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. Ifyou 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 unit.
FUEL SAFETY WARNINGS FOR GAS UNITS
[_ ARNING: Gasoline is highly flammable, and its
Store fuel only in containers specifically designed and
approved for the storage of such materials.
Avoid creating a source of ignition for spilled fuel. Do not
start the engine until fuel vapors dissipate.
vapors can explode if ignited. Take the following
precautions:
Always stop the engine and allow it to cool before filling the
fuel tank. Never remove the fuel tank cap or add fuel when
the engine is hot. Never operate the unit without the fuel cap
securely in place. Loosen the fuel tank cap slowly to relieve
any pressure in the tank.
Add fuel in a clean, well-ventilated outdoor area where there
are no sparks or flames. Remove the fuel cap slowly, and
only after the engine stops. Do not smoke while fueling. Wipe
up any spilled fuel from the unit immediately.
Move the unit at least 30 feet (9.1 m) from the fueling source
and site before starting the engine. Do not smoke. Keep
sparks and open flames away from the area while adding
fuel or operating the unit.
WHILE OPERATING
Never start or run the unit inside a closed room or building.
Breathing exhaust fumes can be fatal. Operate this unit only
in a well-ventilated outdoor area.
Wear safety glasses or goggles that meet ANSI Z87.1
standards and are marked as such. Wear ear/hearing
protection when operating this unit. Wear a face 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.
The cutting attachment shield must always be in place while
operating the unit as a trimmer. Do not operate unit without
both trimming lines extended, and the proper line installed. Do
not extend the trimming line beyond the length of the shield.
This unit has a clutch. The cutting attachment remains stationary
when the engine is idling. If it does not, take the unit to aSears or
other qualified service dealer for an adjustment.
Adjust the D-handle to your size in order to provide the best grip.
Be sure the cutting attachment is not in contact with anything
before starting the unit.
Use the unit only in daylight or good artificial light.
Avoid accidental starting. Be inthe starting position whenever
pulling the starter rope. The operator and unit must be in a stable
positionwhilestarting.RefertoStarting/Stopping Instructions.
• Use the right tool. Only use this tool for its intended purpose.
Do not overreach. Always keep proper footing and balance.
Always hold the unit with both hands when operating. Keep
a firm grip on both handles or grips.
Keep hands, face, and feet at a distance from all moving parts.
Do not touch or try to stop the cutting attachment when it rotates.
Do not touch the engine, gearhousing or muffler. These parts get
extremely hot from operation, even after the unit is turned off.
Do not operate the engine faster than the speed needed to
cut, trim or edge. Do not run the engine at high speed when
not cutting.
Always stop the engine when cutting is delayed or when
walking from one cutting location to another.
Ifyou strike or become entangled with a foreign object, stop
the engine immediately and check for damage. Do not
operate before repairing damage. Do not operate the unit
with loose or damaged parts.
Stop the unit, switch the engine to off, and disconnect the
spark plug for maintenance or repair.
Use only replacement parts or accessories recommended for
this tool that are distributed by Sears or a Craftsman outlet.
Use of any replacement parts or accessories purchased
elsewhere may be hazardous, and will also void your warranty.
Keep unit clean of vegetation and other materials. They may
become lodged between the cutting attachment and shield.
To reduce fire hazard, replace a faulty muffler and spark
arrestor. Keep the engine and muffler free from grass, leaves,
excessive grease or carbon build up.
OTHER SAFETY WARNINGS
Never store the unit with fuel in the tank, inside a building
where fumes may reach an open flame (pilot lights, etc.) or
sparks (switches, electrical motors, etc.).
Allow the engine to cool before storing or transporting. Be
sure to secure the unit while transporting.
Store the unit in a dry area, locked up or up high to prevent
unauthorized use or damage, out of the reach of children.
Never douse or squirt the unit with water or any other liquid.
Keep handles dry, clean and free from debris. Clean after
each use, see Cleaning and Storage Instructions.
Keep these instructions. Refer to them often and use them to
instruct other users. If you loan someone this unit, also loan
them these instructions.
SAVE THESE INSTRUCTIONS
• SAFETY AND 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.
SYMBOL MEANING SYMBOL MEANING
_, = SAFETY ALERT SYMBOL ! " ON/OFF STOP CONTROL,_ Indicates danger, warning or caution. May ON / START/RUN
be used in conjunction with other symbols or
; WARNING i READ OPERATOR,S MANUAL
t • ON/OFF STOP CONTROL
OFF or STOP
ill I I!11 Readtheoperator'smanual(s)andfollowall
I _L._________Jr warnings and safety instructions. Failureto do
so can result inserious injury t° the operator
and/or bystanders
A • KEEP BYSTANDERS AWAY
,_;;;,,_ WARNING: Keep all bystanders, especially
children and pets, at least 50 feet (15 ml
from the operating area.
WEAREyEANDNEARINGPROTECT O"
Ir_,A1 WARNING: Thrown objects and loud noise
can cause severe eye injury and hearing 10s&
Wear eye protection meeting ANSI Z8711
standards and ear protection when operating
this unit. Use a full face shield when needed.
" UNLADED FUEL
_l AlwaYS use ciean' t[esh unleaded rue!
_"_ O • THROWN OBJECTS AND ROTATING
_/7_1_ CUTTER CAN CAUSE SEVERE INJURY
/ _/--_ WARNING: Do not operate without the
//,in cutting attachment shield in place. Keep
__-_T _ away from the rotating cutting attachment.
o SHARP BLADE
WARNING: Sharp blade on cutting
--___lr attachment shield. To prevent serious injury,
do not touch the line cutting blade.
_ Refer tOoperato r Smanua If°r the proper
type of o.
,, NOT SURFACE WARNING
Do not touch ahot muffler, gear housing or
cylinder. You may get burned. These parts get
extremely hot from operation. They remain hot
for a short time after the unit is turned off.
CRAFTSMAN FULL WARRANTY
If this Craftsman product fails due to a defect in material or workmanship within two years from the date of purchase, return it to any
Sears store, Parts and Repair Service Center, or other Craftsman outlet in the United States for free repair (or replacement if repair
proves impossible).
This warranty applies for only 90 days if this product is ever used for commercial or rental purposes.
This warranty covers ONLY defects in materal and workmanship. Sears will NOT pay for:
• Expendable items which can wear out from normal use within the warranty period, such as cutting line, air cleaner or spark plug.
Repairs necessary because of accident or failure to operate or maintain the product according to all supplied instructions.
Preventive maintenance, product tune-ups, or carburetor cleanings or adjustments.
Repairs necessary due to improper fuel mixture, contaminated or stale fuel.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
Sears, Roebuck and Co., Hoffman Estates, IL 60179
Repair Protection Agreements
Congratulations on making a smart purchase. Your new Craftsman® product is designed and manufactured for years of dependable
operation. But like all products, it may require repair from time to time. That's when having a Repair Protection Agreement can save
you money and aggravation.
Here's what the Repair Protection Agreement* includes:
Expert service by our 10,000 professional repair specialists
Unlimited service and no charge for parts and labor on all covered repairs
Product replacement up to $1500 if your covered product can't be fixed
Discount of 10% from regular price of service and related installed parts not covered by the agreement; also, 10% off regular
price of preventive maintenance check
Fast help by phone - we call it Rapid Resolution - phone support from a Sears representative. Think of us as a "talking owner's
manual."
Once you purchase the Repair Protection Agreement, a simple phone call is all that it takes for you to schedule service. You can call
anytime day or night, or schedule a service appointment online.
The Repair Protection Agreement is a risk-free purchase. If you cancel for any reason during the product warranty period, we will
provide a full refund. Or, a prorated refund any time after the product warranty period expires. Purchase your Repair Protection
Agreement today!
Some limitations and exclusions apply. For prices and additional information in the U.S.A. call 1-800-827-6655.
*Coverage in Canada varies on some items. For full details call Sears Canada at t=800=361 =6665.
Sears Installation Service
For Sears professional installation of home appliances, garage door openers, water heaters, and other major home items, in the U.S.A.
or Canada call 1=800=4=MY=HOME ®.
Line
Cutting
Blade
OilFillPlug
Spark
Muffler Plug
Starter Rope
Grip
Shaft Grip
D=Handle Control
Twist & Edge and
Craftsman
Convertible TM Coupler
Shaft
Housing Air Filter Cover Primer Bulb
On/Off Stop
_l Cap
Cold Weather
Start Lever
Throttle
Control
\
Cutting Attachment
Shield
Hassle-Free TM Plus
!_, ARNING: DO NOT ATTEMPT TO USE THIS
ADJUSTING THE D-HANDLE
1. Loosen the screws on the D-handle (Fig. 1).
2. While holding the unit in the operating position (Fig. 2),
3. Tighten the clamp screws evenly, until the D-handle is
UNIT UNTIL THE D-HANDLE HAS BEEN ROTATED
INTO OPERATING POSITION (Fig. 1).
On/Off Stop Control
Shaft
Housing
Shaft Grip
(4) Screws
Minimum 6
(15.24 crn)
D=Handle_
Fig. t
position the D-handle to the location that provides you the
best grip.
secure.
Bottom Clamp
iNSTALL MNE TRIMMER ATTACHMENT
NOTE: To make installation easier, place the unit on the
ground or on a workbench.
1. Turn knob counterclockwise to
loosen coupler (Fig. 16, p. 9).
2. While firmly holding
attachment, push it straight
into the coupler until the
release button snaps into the
primary hole (Fig. 17, p. 9).
NOTE: Aligning the release button
with the guide recess (Fig.
17, p. 9) will help
installation.
3. Turn the knob clockwise to
tighten.
LINE TRIMMER APPLICATIONS _u_
Cutting grass and light weeds;
edging; and decorative trimming Fig. 2
around trees, fences, etc.
WARNING:OVERFILLINGOILCRANKCASEMAY
CAUSESERIOUSPERSONALINJURY.Checkand
maintaintheproperoillevelinthecrankcase;itis
importantandcannotbeoveremphasized.Check
theoilbeforeeachuseandchangeitasneeded.
See Changinq the Oil.
RECOMMENDED OIL TYPE
Using the proper type and weight of oil in the crankcase is
extremely important. Check the oil before each use and
change the oil regularly. Failure to use the correct oil, or using
dirty oil, can cause premature engine wear and failure.
Use a high-quality SAE 30 weight oil of API (American
Petroleum Institute) service class SF, SG, SH.
ADDING OiL TO CRANKCASE: INITIAL USE
NOTE: This unit is shipped without oil. In order to avoid
Your unit is supplied with one 3.04 _ _
fluid oz. (90 ml.) bottle of SAE 30
SF, SG, SH oil (Fig. 3).
NOTE: Save the empty oil bottle.
1. Unscrew the top of the
2. Tip unit so that the back of Oil Fill
damage to the unit, put oil in the crankcase before you
attempt to start the unit.
It can be used to measure Funneu
the correct amount during Spout
future oil changes. See
Changing the Oil.
bottle of oil and remove the OilFillPlug f_'_
paper seal covering the -_-_ _-_
opening. Replace the top.
Next, cut the tip off the O-Ring __
funnel spout (Fig. 3).
the engine is facing up in a Hole _ _ X'_
vertical position. Fig.4
Fig.3
Using Blended Fuels
If you choose to use a blended fuel, or its use is unavoidable,
follow recommended precautions:
• Always use fresh unleaded gasoline
Use a gas stabilizer fuel additive
Drain tank and run the engine dry before storing unit
Using Fuel Additives
The use of a gas stabilizer will inhibit corrosion and minimize
the formation of gum deposits. Using a fuel additive can keep
fuel from forming harmful deposits in the carburetor for up to
six (6) months. 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 gas tank.
outdoor area. Wipe up any spilled fuel immediately.
[_hb WARNING: Add fuel in a clean, well ventilated
FUELING THE UNIT
1. Remove the fuel cap (Fig. 6).
J,_ WARNING: Rem°ve fuel cap sl°wly t° av°id injury 1
Avoid creating a source of ignition for spilt fuel. Do
not start the engine until fuel vapors dissipate.
WARNING: Gasoline is extremely flammable.
Ignited vapors may explode. Always stop the engine
and allow it to cool before filling the fuel tank. Do
not smoke while filling the tank. Keep sparks and
open flames at a distance from the area.
from fuel spray. Never operate the unit without the
fuel cap securely in place.
the crankcase (Fig. 4). _._
4. Pour the entire bottle of oil
into the oil fill hole (Fig. 5).
NOTE: Never add oil to the fuel _,
3. Remove the oil fill plug from _4 _ _ _°_
5. Wipe up any oil that may
Check oil before each use and Fig. 5
change as needed. Refer to
Checking the Oil Level.
RECOMMENDED FUEL TYPE
Old fuel is the primary reason for improper unit performance.
Be sure to use fresh, clean, unleaded gasoline.
NOTE: This is a four cycle engine. In order to avoid damage to
Definition 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 form
acids when stored. Use fresh fuel (less than 60 days old), when
using alcohol-blended fuel.
or fuel tank.
have spilled and reinstall the
oil fill plug. ,
the unit, do not mix oil with gasoline.
Gas Can Spout /
Fuel Tank
Fig.6
2. Place the gas container's spout into the fill hole on the fuel
tank (Fig. 5) and fill the tank.
NOTE: Do not overfill the tank.
3. Wipe up any gasoline that may have spilled.
4. Reinstall the fuel cap.
5. Move the unit at least 30 ft. (9.1 m) from the fueling source
and site before starting the engine.
NOTE: Dispose of the old gasoline in accordance to Federal,
State and Local regulations.
Fuel Cap
!_ ARNING:Operatethisunitonlyinawell-
fumescanbelethalinaconfinedarea.
WARNING:Avoidaccidentalstarting.Makesure
youareinthestartingpositionwhenpullingthe
starterrope(Fig.8).Toavoidseriousinjury,the
operatorandunitmustbeinastablepositionwhile
starting.
STARTINGINSTRUCTIONS
Check the oil level in the crankcase. Refer to Checking
the Oil Level.
Fill the fuel tank with fresh, clean unleaded gasoline.
Refer to Fueling the Unit.
IF COLD... For cold weather conditions (below 40°F),
flip the Cold Weather Start Lever (Fig. 7) down to the
start/closed position and continue to step 4. DO NOT
flip this lever down if the temperature is above 40°F.
o
Fully press and release the primer bulb 10 times,
slowly. Some amount of fuel should be visible in the
primer bulb and fuel lines (Fig. 7). If you can't see fuel
in the bulb, press and release the bulb as many times
as it takes before you can see fuel in it.
ventilatedoutdoorarea.Carbonmonoxideexhaust
ii!ii 4.
iiii;_ 5.
.......IF... the engine does not start, go back to step 2.
.............IF... the engine stops while you are squeezing the throttle,
STOPPING iNSTRUCTiONS
1. Release your hand from the throttle control. Allow the
2. Press and hold On/Off Stop Control in the OFF (O) position
With the unit in the starting position, do not squeeze
the throttle control (Fig. 8). Pull the starter rope out a
short distance, until you feel some resistance. This is
usually around 2-4 inches. Then pull the rope smoothly
and briskly. Repeat this 5 times. The engine should start.
IF ENGINE STARTS AND WEATHER IS COLD...
(below 40°F), flip the Cold Weather Start Lever back
up to the run/open position.
If engine starts, squeeze the throttle control to warm
up the engine for 15 to 30 seconds. In cold weather, let
the engine warm up for 30 to 60 seconds.
go back to step 3.
WARM RESTART... Once the engine is warm, just pull the
starter rope to restart. Do not squeeze the throttle
control while pulling the starter rope.
engine to cool down by idling.
until engine comes to a complete stop (Fig. 9).
X Incredi-Pull /
Starter Rope
Throttle Control
Stop/Off (O)
PrimerBulb
Cold Weather
Fig. 7
Fig. 8
Start/On (I)
Throttle Control
Fig. 9
[_lbl WARNING:Alwaysweareye,hearing,footand
operatingthisunit.
HOLDINGTHE TRIMMER
Before operating the unit, stand in
the operating position (Fig. 10).
Check for the following:
• The operator is wearing eye
protection and proper clothing
With a slightly-bent right arm,
the operator's right hand is
holding the shaft grip
The operator's leftarm is straight, the
left hand holding the assist handle
The unit is at waist level _u_
The cutting attachment is parallel to
bodyprotectiontoreducetheriskofinjurywhen
the ground and easily contacts the
grass without the need to bend over
LNNEREPLACEMENT Fig. 10
for Hassle-Free TM Plus Cutting Head
Amways use Craftsman Hassle=Free TM XTRA QUIET Spiral
Line. Choose the line size best suited for the job at hand. Red
colored line is designed for cutting grass and small weeds.
Black colored line is designed for cutting larger weeds and
light brush.
NOTE: Before inserting new Trimmim
1. Insert both ends of your Plate
2. Push the bend inthe line |
3. Pull the ends of the line
4. Correctly installed line will
5. Rotate the head and
6. Correctly installed, the
line into the holes in Line
the cutting head,
identify the proper Insertion
holes by following the Holes
directions on the line Positioning
glide plate (Fig. 11). Tunnel
Do Not attempt to
remove the cutting
head from the unit
when replacing line.
line into the insertion holes
in the side of the cutting Fig. 11
head (Fig. 11).
until the ends of the line
push through the '_q///}_
positioning tunnels (Fig. 12).
until the line bend is
centered between the two
insertion holes and firmly
against the side of the
cutting head (Fig. 13).
be the same length on Fig. 12
both sides.
repeat steps 1-4 for the
other set of insertion
holes.
four lines will all be the
same length (Fig. 14).
Line Guide
dJ_
f
Some line breakage will occur
from:
Entanglement with foreign
matter
Normal line fatigue
Attempting to cut thick,
stalky weeds
Forcing the line into objects
such as walls or fence posts
TiPS FOR BEST TRIMMING
RESULTS
For best trimming results,
operate unit at full throttle.
Keep the cutting attachment
parallel to the ground.
Do not force the cutting
attachment. Allow the tip of
the line to do the cutting,
especially along walls.
Cutting with more than the
tip will reduce cutting efficiency and may overload the
engine.
Cut grass over 8 inches (200 mm) by working from top to
bottom in small increments to avoid premature line wear or
engine drag.
Cutting from right to left improves the unit's cutting
efficiency. Clippings are thrown away from the operator.
Slowly move the trimmer into and out of the cutting area at
the desired height. Move either in a forward-backward or
side-to-side motion. Cutting shorter lengths produces the
best results.
Trim only when grass and weeds are dry.
The life of your cutting line is dependent upon proper
adherence of explained trimming techniques, what
vegetation is cut, and where vegetation is cut.
For example, the line will wear faster when trimming against a
foundation wall as opposed to trimming around a tree.
DECORATIVE TRIMMING
Decorative trimming is
accomplished by removing all
vegetation around trees, posts, \\
fences and more.
Rotate the whole unit so that the
cutting attachment is at a 30°
angle to the ground (Fig. 15). ,/_
Fig. 14
30°
Fig. 15
Fig. 13
attachment, read and understand the manual that
[_1 WARNING: Before you begin using any
!_l WARN'NG: To avoid serious personal injury and
USING THE CRAFTSMAN CONVERTIBLE TM FEATURE
You can convert this unit to edge g0° Edging Hole
grass. (Trimmer Onh
1. Make sure the unit is turned
2. Turn the knob counterclockwise
to loosen coupler (Fig. 16).
3. Push in the release button (Fig.
the release button snaps into the Knob
90 ° hole (Fig. 16).
4. Turn the knob clockwise to lock
the coupler (Fig. 18). Fig. 16
Craftsman Convertible TM
came with the attachment. Follow all safety
information contained within.
damage to the unit, shut the unit off before
removing or installing add-ons.
completely off.
17) and twist the shaft 90° until
Coupler Primary Hole Release Button
Guide Recess
Fig. 17
Upper
Boom
Attachment
CRAFTSMAN CONVERTIBLE TM FEATURE
CAUTION: These add-on attachments are to be I
snapped into the primary hole only. Using the wrong
hoe cou dead to persona nury or damage to the unt.j
The coupler allows you to convert this unit for use with the
following add-on attachments:
• Cultivator
Blade Edger
Blower
Brush Cutter
Pruner
To Install Attachments
CAUTION: Before operating this unit, be sure
that the release button is fully snapped into the
primary hole (Fig. 16), and that the knob (Fig. 17) is
securely tightened.
NOTE: To make installation easier, place the unit on the
ground or on a workbench.
1. Make sure the unit is turned completely off.
2. Turn the knob counterclockwise to loosen the coupler (Fig.
16).
3. While firmly holding the attachment, push it straight into the
coupler until the release button (Fig. 17) snaps into the
primary hole (Fig. 17). The primary hole is on the opposite
side of the coupler from the knob (Fig. 17). Align the release
button with the Guide Recess (Fig. 17) to help installation.
4. Turn the knob clockwise to tighten.
To Remove Attachments
1. Make sure the unit is turned completely off
2. Turn the knob counterclockwise to loosen the coupler.
3. Press and hold the release button (Fig. 17).
4. While firmly holding the upper shaft boom (Fig. 18), pull the
attachment out of the coupler.
J
Fig. 18
Knob
WARNING: To prevent serious injury, never
perform maintenance or repairs with unit running.
I Always service and repair a cool unit. Disconnect the
1 I spark pug w re to ensure that the unt cannot start.
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.
NOTE: Some maintenance procedures may require special tools
or skills. If you are unsure about these procedures take
your unit to a Sears or other qualified service dealer.
FREQUENCY MAINTENANCE REQUIRED SEE
NOTE: Maintenance, replacement, or repair of the emission
control devices and system may be performed by a
Sears or other qualified service dealer.
In order to assure peak performance of your engine, inspection
of the engine exhaust port may be necessary after 50 hours of
operation. If you notice lost RPM, poor performance or general
lack of acceleration, this service may be required. Ifyou feel
your engine is in need of this inspection, refer service to a Sears
or other qualified service dealer for repair. DO NOT attempt to
perform this process yourself as engine damage may result
from contaminants involved in the cleaning process for the port.
Before starting engine Fill fuel tank with fresh fuel p. 6
Every 10 hours Clean and re-oil air filter p. 11
1st change at 10 hours Change oil p. 10
2nd change at 25 hours Change oil p. 10
Every 25 hours after Clean spark arrestor p. 13
10 hours on new engine Check rocker arm to valve clearance and adjust p. 12
Every 25 hours Check rocker arm to valve clearance and adjust p. 12
Every 25 hours Check spark plug condition and gap p. 13
CHECKING THE OiL LEVEL
The importance of checking and maintaining the proper oil level
in the crankcase cannot be overemphasized. Check oil before
each use:
1. Stop the engine and allow oil to drain into the crankcase.
2. Place the engine on an elevated, level surface with the
cutting head shield hanging off the surface to get a proper
oil level reading (Fig. 19).
L
3. Keep dirt, grass clippings and other debris out of the engine.
Clean the area around the dipstick before removing it.
4. Remove the oil fill plug.
5. Look into the oil fill hole, use a flashlight if needed. The oil
should be just touching the inner most thread (Fig. 19).
6. If the oil level is not touching the inner most thread on the
oil fill hole, add a small amount of oil to the oil fill hole and
recheck (Fig. 20). Repeat this procedure until the oil level
reaches the inner most thread on the oil fill hole.
NOTE: Do not overfill the unit
NOTE: Make sure the O-ring is in place on the oil fill plug when
checking and changing the oil (Fig 21)
v
Check oil p. 10
CHANGING THE OIL
[_l WARN'NG: Wear gloves to prevent injury whenjhandling unit
For a new engine, change the oil after the first 10 hours of
operation. Change the oil while the engine is still warm. The oil
will flow freely and carry away more impurities.
1. Unplug spark plug boot to prevent accidental starting.
2. Remove the oil fill plug.
3. Pour the oil out of the oil
fill hole and into a
container by tipping the
unit to a vertical position
(Fig. 22). Allow ample
time for complete
Fig. 1g
O-Ring __
drainage.
4. Wipe up any oil residue
on the unit and clean up
any oil that may have
spilled. Dispose of the
oil according to Federal,
State and local
regulations.
5. Refill the crankcase with
3.04 fluid ounce (90 ml)
of SAE 30 SF, SG, SH Fig, 22
oil.
NOTE: Use the bottle and spout saved from initial use to
6. Replace the oil fill plug.
7. Reconnect the spark plug boot.
measure the correct amount of oil. The top of the label
on the bottle measures approximately 3.04 ounces (90
ml) (Fig. 23). Check the level, See Checking the Oil
Level. If the level is low, add a small amount of oil and
recheck. Do not overfill (Fig. 23).
\ MaxOilFi,Li,,J/ Hole \ ,
Fig. 20 -- Fig. 21
t0
\ \
Fig. 23
AIR FILTER MAINTENANCE
!_! WARNING: To avoid serious personal injury,
Cleaning the Air Filter
Clean and re-oil the air filter every 10 hours of operation. It isan
important item to maintain. Failure to maintain your air filter
properly can result in poor performance or can cause
permanent damage to your engine.
1. Open the air filter cover. Push the tab on the under side of
the cover inward. Then pull the air filter cover out and up.
always turn the unit off and allow it to cool before
you clean or service it.
(Fig. 24).
NOTE: If the unit is operated without the air filter, you will
7. Reinstall the air
8. Swing the cover
CARBURETOR ADJUSTMENT
VOID the warranty.
filter cover.
Position the slots
on the top of the
air filter cover onto
the tabs at the top
of the back plate
(Fig. 28).
down until the tab
on the air filter
backplate snaps
into place in the
slot on the air
filter cover (Fig. 29).
Air Filter Cover
Back Plate
Air
Fig. 29
_ Locking Tab
Fig. 28
Tab
Tabs
Fig. 24
2. Remove the air filter (Fig. 23). _ /
3. Wash the filter in detergent and
water (Fig. 25). Rinse the filter
thoroughly and allow it to dry.
4. Apply enough clean SAE 30
motor oil to lightly coat the filter
(Fig. 26).
5. Squeeze the filter to spread and
remove excess oil (Fig. 27). \ .,
6. Replace the filter (Fig. 24). -___ )/_
Tab
\
)
Fig. 25
\
l_i WARNING: To prevent serious personal injury, 1
The idle speed of the
engine is adjustable. An
idle adjustment screw is
between the air filter cover
and the engine starter
housing (Fig. 30).
NOTE: Careless
Check Fuel
Old fuel is usually the reason for improper unit performance.
Drain and refill the tank with fresh fuel prior to making any
adjustments. Refer to Oil and Fuel Information.
Clean Air Filter
The condition of the air filter is important to the operation of
the unit. A dirty air filter will restrict air flow. This is often
mistaken for an out of adjustment carburetor. Check the
condition of the air filter before adjusting the idle speed screw.
Refer to Air Filter Maintenance.
make sure the cutting attachment has stopped
rotating before you turn it off and set it down.
IdleAdjustment Screw
adjustments can
seriously damage
your unit. A Sears
or other qualified
service dealer
should make
carburetor
adjustments.
r--
/
Fig. 30
Fig. 26 Fig. 27
tl
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