Craftsman 316.79191 User Manual
Sears, Roebuck and Co., Hoffman Estates, IL 60179, U.S.A.
Visit our website: www.sears.com/craftsman
CAUTION: Before using
this product, read this
manual and follow all
safety rules and operating
instructions.
Operator’s Manual
4-Cycle
WEEDWACKER GAS TRIMMER
Model No. 316.791910
• SAFETY
• ASSEMBLY
• OPERATION
• MAINTENANCE
• PARTS LIST
• ESPAÑOL, P. E1
769-03535A
®
with
2
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.
• Carefully inspect the area before starting the unit. Remove all
debris and hard or sharp objects such as glass, wire, etc.
• Be aware of the risk of injury to the head, hands and feet.
• Clear the area of children, bystanders, and pets. At a minimum,
keep all children, bystanders, and pets outside a 50 feet (15 m.)
radius; there still may be a risk to bystanders from thrown
objects. Bystanders should be encouraged to wear eye
protection. If you are approached, stop the unit immediately.
• Use only Craftsman XTRA QUIET™ 0.095 inch (2.413 mm)
diameter original equipment manufacturer replacement line.
Never use metal-reinforced line, wire or rope. These can break
RULES FOR SAFE OPERATION
• IMPORTANT SAFETY INSTRUCTIONS •
off and become dangerous projectiles.
• Squeeze the throttle control and check that it returns automatically to
the idle position. Make all adjustments or repairs before using unit.
SAFETY WARNINGS FOR GAS UNITS
• Store fuel only in containers specifically designed and approved
for the storage of such materials.
• 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.
• Avoid creating a source of ignition for spilled fuel. Do not start
the engine until fuel vapors dissipate.
• 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 Z87.1–1989 standards
and are marked as such. Wear ear/hearing protection when operating
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.
FOR QUESTIONS, CALL 1–800–659-5917
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.
NOTE: Advises you of information or instructions vital to the
operation or maintenance of the equipment.
SAFETY ALERT:
Indicates danger, warning or
caution. Attention is required in order to avoid serious
personal injury. May be used in conjunction with other
symbols or pictographs.
DANGER:
Failure to obey a safety warning will result
in serious injury to yourself or to others. Always follow
the safety precautions to reduce the risk of fire, electric
shock and personal injury.
WARNING:
Failure to obey a safety warning can
result in injury to yourself and others. Always follow the
safety precautions to reduce the risk of fire, electric
shock and personal injury.
CAUTION:
Failure to obey a safety warning may
result in property damage or personal injury to yourself
or to others. Always follow the safety precautions to
reduce the risk of fire, electric shock and personal injury.
SYMBOL MEANING
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 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 your LOCAL SERVICE DEALER to install the
Accessory Part #753-05297 Spark Arrestor Kit.
CALIFORNIA PROPOSITION 65 WARNING
WARNING
THE ENGINE EXHAUST FROM THIS PRODUCT CONTAINS
CHEMICALS KNOWN TO THE STATE OF CALIFORNIA TO
CAUSE CANCER, BIRTH DEFECTS OR OTHER
REPRODUCTIVE HARM.
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.
WARNING:
Gasoline is highly flammable, and its
vapors can explode if ignited. Take the following
precautions:
TABLE OF CONTENTS
Rules for Safe Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Know Your Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Assembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Oil and Fuel Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Starting/Stopping Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Maintenance and Repair Instructions . . . . . . . . . . . . . . . . . . . . . . .9
Cleaning and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
California Emission Control Warranty Statement . . . . . . . . . . . . .15
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E19
Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . .Back Cover
3
RULES FOR SAFE OPERATION
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, have the unit adjusted by
an authorized service technician.
• Adjust the 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 in the starting position whenever
pulling the starter rope. The operator and unit must be in a stable
position while starting. Refer to Starting/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, gear housing 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.
• If you 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.
• 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.
SYMBOL MEANING
• SAFETY ALERT SYMBOL
Indicates danger, warning or caution. May be used in
conjunction with other symbols or pictographs.
SYMBOL MEANING
• ON/OFF STOP CONTROL
OFF or STOP
• ON/OFF STOP CONTROL
ON / START / RUN
•OIL
Refer to operator’s manual for the proper type of oil.
• UNLEADED FUEL
Always use clean, fresh unleaded fuel.
• KEEP BYSTANDERS AWAY
WARNING: Keep all bystanders, especially
children and pets, at least 50 feet (15 m) from the
operating area.
• THROWN OBJECTS AND ROTATING CUTTER
CAN CAUSE SEVERE INJURY
WARNING: Do not operate without the cutting
attachment shield in place. Keep away from the
rotating cutting attachment.
• CHOKE CONTROL
1. • FULL choke position
2. • PARTIAL choke position
3. • RUN choke position
• HOT SURFACE
WARNING: Do not touch a hot 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.
• WEAR EYE AND HEARING PROTECTION
WARNING: Thrown objects and loud noise can
cause severe eye injury and hearing loss. Wear eye
protection meeting ANSI Z87.1–1989 standards and
ear protection when operating this unit. Use a full
face shield when needed.
• SHARP BLADE
WARNING: Sharp blade on cutting attachment
shield. To prevent serious injury, do not touch the
line cutting blade.
4
Primer
Bulb
Oil Fill
Plug/
Dipstick
Choke
Lever
Spark Plug
Air Filter Cover
Cutting Shield
Fuel
Cap
Throttle
Control
D-Handle
Rapid Rewind™ Head
Shaft Grip
Shaft
Housing
Starter Rope Grip
Line
Cutting
Blade
APPLICATIONS
As a trimmer:
• Cutting grass and light weeds
• Decorative trimming around trees, fences, etc.
Muffler
Spark Arrestor
KNOW YOUR UNIT
Muffler Guard
WARRANTY STATEMENT
On/Off Stop Control
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 1-800-361-6665.
Sears Installation Service
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 that can wear out from normal use within the warranty period, such as cutting line, filters or spark plugs.
• Repairs necessary because of accident or failure to operate or maintain the product according to all supplied instructions.
• Preventive maintenance, or 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.
5
ASSEMBLY INSTRUCTIONS
ADJUSTING THE D-HANDLE
1. Locate the wing nut on the D-Handle. Loosen the wing nut
enough to loosen the D-Handle (Fig. 1).
NOTE: Do not remove wing nut, washer, or bolt.
2. Rotate the D-Handle to the upright position on the front side
of the shaft housing (Fig. 1).
NOTE: The D-handle should slant towards the powerhead of the
unit.
3. Hold the unit in the operating position (Fig. 2). If necessary,
reposition the D-handle to the location that provides the best
grip.
4. Tighten the wing nut until the D-Handle is secure.
Fig. 1
Fig. 2
6
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 damage
to the unit, put oil in the crankcase before you attempt to
start the unit.
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. It
can be used to measure the
correct amount during future
oil changes. See Changing the
Oil.
1. Unscrew the top of the bottle of
oil and remove the paper seal
covering the opening. Replace
the top. Next, cut the tip off the
funnel spout (Fig. 3).
2. Tip unit so that the back of the
engine is facing up in a vertical
position.
3. Remove the oil fill plug from 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 or
fuel tank.
5. Wipe up any oil that may have
spilled and reinstall the oil fill
plug.
Check oil before each use and
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. Dispose of the old
gasoline in accordance to Federal, State and Local regulations.
NOTE: This is a four cycle engine. In order to avoid damage to the
unit, do not mix oil with gasoline.
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.
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 fuel additive container. NEVER add fuel
additives directly to the unit's gas tank.
FUELING THE UNIT
1. Remove the fuel cap (Fig. 6).
2. Place the gas container’s spout into the fill hole on the fuel
tank (Fig. 6) 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.
Fig. 3
Funnel
Spout
Fig. 6
Fuel Cap
Fuel Tank
Gas Can Spout
OIL AND FUEL INFORMATION
Oil Fill Plug
Oil Fill Hole
O-Ring
Fig. 4
Fig. 5
WARNING: OVERFILLING OIL CRANKCASE MAY
CAUSE SERIOUS PERSONAL INJURY. Check and
maintain the proper oil level in the crank case; it is
important and cannot be overemphasized. Check the oil
before each use and change it as needed. See
Changing the Oil.
WARNING:
Add fuel in a clean, well ventilated
outdoor area. Wipe up any spilled fuel immediately.
Avoid creating a source of ignition for spilt fuel. Do not
start the engine until fuel vapors dissipate.
WARNING:
Remove fuel cap slowly to avoid injury
from fuel spray. Never operate the unit without the fuel
cap securely in place.
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.
7
Start/On (I)
Stop/Off (O)
Throttle Control
Fig. 9
STARTING AND STOPPING INSTRUCTIONS
WARNING: Avoid accidental starting. Make sure you
are in the starting position when pulling the starter rope
(Fig. 8).
To avoid serious injury, the operator and unit must
be in a stable position while starting.
WARNING:
Operate this unit only in a well-ventilated
outdoor area. Carbon monoxide exhaust fumes can be
lethal in a confined area.
STARTING INSTRUCTIONS
Starter Rope
Throttle Control
Fig. 8
Primer Bulb
Fig. 7
Choke Lever
1. Check the oil level in the crankcase. Refer to
Checking the Oil Level.
2. Fill the fuel tank with fresh, clean unleaded gasoline.
Refer to Fueling the Unit.
NOTE: There is no need to turn the unit on. The On/Off
Stop Control is in the ON ( I ) position at all
times.
3. 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.
COLD UNIT START
4. Place the choke lever in Position 1 (Fig. 7).
5. Crouch in the starting position (Fig. 8). While
squeezing the throttle control, pull the starter rope
out with a slow and steady motion 5 times.
6. Place the choke lever in Position 2 (Fig. 7).
7. While squeezing the throttle control, pull the starter
rope out with a slow and steady motion 1 to 4 times
to start the engine.
8. Keep the throttle squeezed and allow the engine to
warm up for 15 to 30 seconds.
9. Place the choke lever in Position 3 (Fig. 7). The unit
is ready for use.
IF...
The engine does not start, go back to step 3.
IF...
The engine fails to start after a few attempts, place
the choke lever in Position 3 and squeeze the
throttle control. Pull the starter rope out with a slow
and steady motion 3 to 8 times, the engine should
start. If not, pull 3 to 8 more times.
WARM UNIT RESTART... If the unit is already hot, place
the choke lever in Position 1. While squeezing the
throttle control, pull the starter rope to restart. Place
the choke lever in Position 3.
NOTE: The unit uses the Incredi-Pull™ starting system
with MAX FIRE IGNITION™ , which significantly
reduces the effort required to start the engine.
You must pull the starter rope out far enough to
hear the engine attempt to start. There is no
need to pull the rope briskly-- there is no harsh
resistance when pulling. Be aware that this
starting method is vastly different from (and
much easier than) what you may be used to.
STOPPING INSTRUCTIONS
1. Release your hand from the throttle control. Allow the engine to
cool down by idling.
2. Press and hold On/Off Stop Control in the OFF (O) position until
engine comes to a complete stop (Fig. 9)
Trimmer
Incredi-Pull™
8
HOLDING THE TRIMMER
Before operating the unit, stand in the
operating position (Fig. 10). Check for the
following:
•T
he 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 left arm is straight, the left
hand holding the handle
• The unit is at waist level
• The cutting attachment is parallel to the
ground and easily contacts the grass
without the need to bend over
BUMP KNOB LINE ADVANCE
Tap the bump knob on the ground to advance the cutting line when
necessary.
TIPS FOR BEST TRIMMING RESULTS
• For best trimming results, operate unit with throttle control fully
squeezed.
• 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.
• Cut from right to left.
WARNING: Always wear eye, hearing, foot and body
protection to reduce the risk of injury when operating
this unit.
OPERATING INSTRUCTIONS
Fig. 10
Fig. 11
30°
• Slowly move the trimmer into and out of the cutting area at the
desired height. Move either in a forward-backward or side-toside 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
- Where vegetation is cut
For example, the line will wear faster when trimming against a
foundation wall as opposed to trimming around a tree. It is normal for
some line breakage to occur from regular use.
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. 11).
9
MAINTENANCE AND REPAIR INSTRUCTIONS
LINE INSTALLATION FOR THE RAPID REWIND™ CUTTING HEAD
Always use
Craftsman XTRA QUIET™ 0.095 inch (2.413 mm)
original equipment manufacturer replacement line. Lines other than
the specified may make the engine overheat or fail.
There are two methods to replace the Rapid Rewind™ trimming line:
• Wind the inner reel with new line
• Install a pre-wound inner reel
Winding the Inner Reel With New Line
NOTE: It Is unnecessary to remove the bump knob to install a new
trimming line.
1. Cut two 7 ft (2.1 m) pieces of 0.095-inch (2.413 mm) trimming line.
NOTE:
Always use the correct line length when installing trimming
line on the unit. The line may not release properly if the line is
too long.
2. Hold the outer spool and turn the inner reel counterclockwise to
line up the arrows on the outer spool and inner reel (Fig. 12).
3. Detach old line ends from locking holes (Fig. 12) and pull old line
out through reel eyelets (Fig. 13).
4. Making sure arrows are aligned, insert the end of a piece of trimming
line straight into one of the two eyelets in the outer spool. Push it up
through the line loading hole in the inner reel (Fig. 13). Do not bend the
line when inserting it into the eyelet.
5. Insert the line into the locking hole (Fig. 14). Do not push the line
more than a 1/2 inch (12.7 mm) into the line locking hole. The line
will form a small loop (Fig. 14) when it is inserted correctly.
6. Pull the line from the outer spool until the line is tight against the
inner reel (Fig. 15).
7. Repeat procedures 4-6 with the second piece of line in the other
eyelet.
NOTE: Do not wind the inner reel before installing the second
piece of line.
8. Hold the outer spool. Wind the inner reel counterclockwise until
approximately four (4) inches (102 mm) of line remain (Fig. 16).
Avoid contact of bump knob while winding. Ensure bump knob is
tight on shaft before proceeding, turn bump knob clockwise to
tighten.
9. If winding the line becomes difficult or if the line jams, pull the ends
of the line from the spool (Fig. 17). Continue winding the inner reel
counterclockwise until 4 inches of line remains on each side.
Fig. 12
Top View Of The Rapid Rewind™
Bump
Knob
Outer
Spool
Inner
Reel
Arrows
Fig. 14
Line Locking Hole
Fig. 13
Line Loading Hole
Trimming Line
Eyelet
Fig. 15
Fig. 16
Fig. 17
WARNING:
Never use metal-reinforced line, wire, chain
or rope. These can break off and become dangerous
Locking
Hole
Locking
Hole
10
MAINTENANCE AND REPAIR INSTRUCTIONS
CLEANING THE RAPID REWIND™ HEAD
NOTE: Also perform these steps when replacing inner reel with a
new prewound reel.
Cleaning the Rapid Rewind™ may be necessary if:
• A jammed or excessive line must be removed
• The Rapid Rewind™ becomes difficult to wind or does not operate
correctly when bumping the head on the ground.
1. Hold the outer spool, and unscrew the bump knob
counterclockwise (Fig. 18).
2. Pull out the bump knob, spring and foam seal (Fig. 19).
Fig. 18
Fig. 19
Bump Knob
Foam Seal
Spring
Inner Reel
3. Pull the inner reel with existing line from the outer spool.
4. If rewinding with new line, remove any existing line from the inner reel
before cleaning. Remove any debris or grass from the knob, spring, inner
reel and foam seal. Wash the inner reel with warm soapy water (Fig. 20).
5. Clean the shaft and the inner surface of the outer spool. To clean
the shaft underneath the plunger, press down on the plunger (Fig.
21). Remove any dirt or debris from the shaft.
NOTE: The inner reel must be totally dry before reinstalling it into the
outer spool. Do not lubricate the inner reel or outer spool assembly.
6. Place the cleaned and empty or new prewound inner reel into the
outer spool.
7. Place the bump knob, spring and foam seal onto the inner reel (Fig. 19).
8. Press the bump knob down and tighten clockwise.
9. Install new line in the empty inner reel as described in Line Installation
for the Rapid Rewind™.
Fig. 21
Plunger
Shaft
Fig. 20
Inner Reel
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 authorized service dealer.
NOTE: Maintenance, replacement, or repair of the emission
control devices and system may be performed by a Sears
or other authorized 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
FREQUENCY MAINTENANCE REQUIRED SEE
Before starting engine
Fill fuel tank with fresh fuel
Check oil
Page 6
Page 11
Every 10 hours Clean and re-oil air filter Page 11
First change at 10 hours
At 25 hours/every 25 hours
Every 50 hours
Change oil
Change oil
Clean spark arrestor
Page 11
Page 11
Page 13
10 hours on new engine
Every 25 hours
Every 25 hours
As necessary
Check rocker arm to valve clearance and adjust
Check rocker arm to valve clearance and adjust
Check spark plug condition and gap
Clean the Rapid Rewind™ Head
Page 12
Page 12
Page 13
Page 10
WARNING: To prevent serious injury, never perform
maintenance or repairs with unit running. Always service
and repair a cool unit. Disconnect the spark plug wire to
ensure that the unit cannot start.
notice lost RPM, poor performance or general lack of acceleration, this
service may be required. If you 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.
• MAINTENANCE SCHEDULE •
11
MAINTENANCE AND REPAIR INSTRUCTIONS
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 an accurate oil level
reading (Fig. 22).
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 innermost thread (Fig. 23).
6. If the oil level is not touching the innermost thread on the oil fill
hole, add a small amount of oil to the oil fill hole and recheck
(Fig. 23). Repeat this procedure until the oil level reaches the
innermost 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
Fig. 22
Oil Fill Plug
Oil Fill Hole
O-Ring
Max Oil Fill Line
Fig. 24
Fig. 23
checking and changing the oil (Fig. 24).
CHANGING THE OIL
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. 25). Allow ample
time for complete 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 oil.
NOTE: Use the bottle and spout saved from initial use to measure the
correct amount of oil. The top of the label on the bottle
measures approximately 3.04 ounces (90 ml) (Fig. 26). 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. 26).
WARNING: Wear gloves to prevent injury when
handling unit.
6. Replace the oil fill plug.
7. Reconnect the spark plug boot.
AIR FILTER MAINTENANCE
Cleaning the Air Filter
Clean and re-oil the air filter every 10 hours of operation. It is an
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. (Fig. 27).
2. Remove the air filter (Fig. 30).
3. Wash the filter in detergent and
water (Fig. 28). Rinse the filter
thoroughly and allow it to dry.
4. Apply enough clean SAE 30 motor
oil to lightly coat the filter (Fig. 29).
5. Squeeze the filter to spread and
remove excess oil (Fig. 30).
6. Replace the filter (Fig. 27).
NOTE: If the unit is operated without
the air filter, you will
VOID the warranty.
7. Reinstall the air filter cover.
Position the slots on the top
of the air filter cover onto the
tabs at the top of the back
Fig. 25
Fill Level
Fig. 26
WARNING: To avoid serious personal injury, always
turn the unit off and allow it to cool before you clean or
service it.
Air Filter Cover
Air Filter
Tab
Fig. 27
Fig. 28
Fig. 29
12
MAINTENANCE AND REPAIR INSTRUCTIONS
will not idle, adjust the idle speed screw as follows:
1. Start the engine and let it run at a high idle for a minute to
warm up. Refer to Starting/Stopping Instructions.
2. Release the throttle trigger and let the engine idle. If the engine
stops, insert a small phillips screwdriver in between the Air
Filter Cover and the Engine Cover (Fig. 33). Turn the idle speed
screw in, clockwise, 1/8 of a turn at a time (as needed) until
the engine idles smoothly.
NOTE: The cutting head should not rotate when the engine idles.
3. If the cutting attachment rotates when the engine idles, turn
the idle speed screw counterclockwise 1/8 of a turn at a time
(as needed), until the head stops turning.
Checking the fuel, cleaning the air filter, and adjusting the idle
speed should solve most engine problems. If not and all of the
following are true:
• the engine will not idle
• the engine hesitates or stalls on acceleration
• there is a loss of engine power
Have the carburetor serviced by a Sears or other qualified service
dealer.
ROCKER ARM CLEARANCE
This requires disassembly of the engine. If you feel unsure or
unqualified to perform this, take the unit to a Sears or other
qualified service dealer
NOTE: Inspect the valve to rocker arm clearance with a feeler gauge after
the first 10 hours of operation and every 25 hours of operation.
• The engine must be cold when checking or adjusting the valve
clearance.
• This task should be performed inside, in a clean, dust free area.
1. Remove the six (6) screws on the back of the engine cover
with a Flat-head or T-25 Torx screwdriver (Fig. 34).
2. Disconnect the spark plug wire.
3. Clean dirt from around the spark
plug. Remove the spark plug from
the cylinder head by turning a 5/8
in. socket counterclockwise.
4. Remove the engine cover (Fig.
34).
5. Clean dirt from around the rocker
arm cover. Remove the screw
holding the rocker arm cover with
a large flat blade screwdriver or
Torx T-25 bit (Fig. 35). Remove
the rocker arm cover and gasket.
6. Pull the starter rope slowly to bring the piston to the top of its
travel, (known as top dead center). Check that:
• The piston is at the top of its travel. Look in the spark plug hole
to view the piston (Fig. 36)
• Both rocker arms move freely, and both valves are closed.
If these statements are not true, repeat step 6.
7. Slide the feeler gauge between the rocker arm and the top of
each valve stem. Measure the clearance between the valve
stem and rocker arm (Fig. 36 & 37). Measure both the intake
and exhaust valves.
Rocker
Arm
Cover
Fig. 35
Spark
Plug
Hole
plate (Fig. 31).
8. Swing the cover down until the tab on the air filter backplate
snaps into place in the slot on the air filter cover (Fig. 32).
IDLE SPEED ADJUSTMENT
The idle speed of the engine is
adjustable. An idle adjustment
screw is between the air filter
cover and the engine starter
housing (Fig. 33).
NOTE: Careless adjustments
can seriously damage
your unit. Aside from
the idle speed, only a
Sears or other qualified
service dealer should
make carburetor
adjustments.
1. Check Fuel
Old fuel is usually the reason for idle speed problems. Drain and
refill the tank with fresh fuel prior to making any adjustments. Refer
to Oil and Fuel Information.
2. 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 idle. Check the condition of the air filter before
adjusting the idle speed screw. Refer to Air Filter Maintenance.
3. Adjust Idle Speed Screw
If, after checking the fuel and cleaning the air filter, the engine still
Idle Adjustment Screw
Fig. 33
Fig. 31
Locking
Tab
Tabs
Back Plate
Air
Filter
Air Filter Cover
Air Filter
Tab
Fig. 32
WARNING: The cutting head may spin during idle speed
adjustments. Wear protective clothing and observe all
safety instructions to prevent serious personal injury.
WARNING: The cutting attachment may spin during idle
speed adjustments. Wear protective clothing and observe
all safety instructions to prevent serious personal injury.
WARNING: To prevent serious personal injury, make
sure the cutting attachment has stopped rotating before
you turn it off and set it down.
Remove
Screws
Fig. 34
View Of The Rear Engine Cover
Remove
Screws
Fig. 30
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