Craftsman 316.794831 Operator's Manual

Operator's Manual

4-Cycle

HANDHELD BLOWER

Model No. 316.794831

INCREDI.PULL) LH

UNBELIEVABLE STARTING E A S E

• SAFETY

• ASSEMBLY

• OPERATION

• MAINTENANCE

• PARTS LIST

• ESPANOL, P. 11

CAUTION: Before using this product, read this manual and

understand all safety rules and operating instructions.

Sears Brand Management Corporation, Hoffman Estates, IL 60179, U.S.A.

Visit our website: www.craftsman.com

769-06546 P00 10/10

CALIFORNIA PROPOSITION 65

THE ENGINE EXHAUST FROM THIS PRODUCT CONTAINS CHEMICALS

KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER, BIRTH

TABLE OF CONTENTS

Safety Rules .................................................................................................... 2

Warranty .......................................................................................................... 4

Know Your Unit ............................................................................................... 4

Assembly Instructions ..................................................................................... 4

Oil and Fuel Information .................................................................................. 5

Starting/Stopping Instructions ........................................................................ 5

Operating Instructions .................................................................................... 6

Maintenance and Repair Instructions ............................................................. 6

Cleaning and Storage ..................................................................................... 8

Troubleshooting Chart ..................................................................................... 8

Specifications ................................................................................................. 9

Parts List ....................................................................................................... 30

Service Numbers ........................................................................... Back Cover

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 #753-05900 Muffler Assembly

DEFECTS OR OTHER REPRODUCTIVE HARM

he purpose of safety symbols is to attract your attention to possible dangers.J he safety symbols, and their explanations, deserve your careful attentionJ

nd understanding. The safety warnings do not by themselves eliminate any_ anger. The instructions or warnings they give are not substitutes for proper 1 ccident prevention measures. |

SYMBOL MEANING

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.

NOTE: Advises of information or instructions vital to the operation or

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.

maintenance of the equipment.

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.

• IMPORTANT SAFETY INSTRUCTIONS •

READ ALL INSTRUCTIONS BEFORE OPERATING

_IL WARNING: When using the unit, all safety rules must be J

• Read the instructions carefully. Be familiar with the controls and proper use

• Do not operate this unit when tired, ill, or under the influence of alcohol,

• Children and teens under the age of 15 must not use the unit, except for

• All guards and safety attachments must be installed properly before

• Inspect the unit before use. Replace damaged parts. Check for fuel leaks.

• Carefully inspect the area before starting the unit. Remove all debris and

• Clear the area of children, bystanders, and pets. At a minimum, keep all

• Squeeze the throttle control and check that it returns automatically to the

SAFETY WARNINGS FOR GAS UNITS

• Store fuel only in containers specifically designed and approved for the

• Always stop the engine and allow it to cool before filling the tank. Never

• Always add fuel in a clean, well-ventilated outdoor area where there are no

followed. Please read these instructions before operating the unit

n order to ensure the safety of the operator and any bystanders.

Please keep these instructions for later use.

of the unit.

drugs, or medication.

teens guided by an adult.

operating the unit.

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.

hard or sharp objects such as glass, wire, etc.

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.

idle position. Make all adjustments or repairs before using unit.

WARNING: Gasoline is highly flammable and its vapors can

explode if ignited. Take the following precautions:

storage of such materials.

remove the fuel tank cap or add fuel when the engine is hot. Always loosen

the fuel tank cap slowly to relieve any pressure inthe tank before fueling.

DO NOT smoke.

sparks or flames. 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 thge 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 well ventilated outdoor area.

WHILE OPERATING

• Wear safety glasses or goggles that are marked as meeting ANSI Z87.1- 1989 standards and are marked as such. Wear ear/hearing protection

when operating this unit.

• Never run the unit without the the proper equipment attached.

• To reduce the risk of hearing loss associated with sound level(s), always wear ear/hearing protection when operating this unit.

• Wear heaw 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 artificial light.

• Keep outside surfaces free from oil and fuel.

• 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.

• Do not set unit on any surface except a clean, hard area while engine is running. Debris such as gravel, sand, dust, grass, etc. could be picked up

by the air intake and thrown out by the discharge opening, damaging unit, property, or causing serious injury to bystanders or operator.

• Use the right tool. Only use this tool for its intended purpose.

• Do not force unit. It will do the job better and with less likelihood of injury at a rate for which it was designed.

• Do not overreach or use from unstable surfaces such as ladders, trees, steep slopes, rooftops, etc. Always keep proper footing and balance.

• Always hold the unit with a firm grip when operating.

• Keep hands, face, and feet away from all moving parts. Do not touch or try to stop the impeller when it is rotating. Do not operate without guards in place.

• Do not put any object into openings. Do not use with any opening blocked; keep free of dirt, debris, and anything that may reduce the air flow.

• Do not touch the engine or muffler. These parts get extremely hot from operation, even after the unit is turned off.

• Donotoperatetheenginefasterthanthespeedneededtodothejob.Do notruntheengineathighspeedwhennotinuse.

• Alwaysstoptheenginewhenoperationisdelayedorwhenwalkingfrom

onelocationtoanother.

• Stoptheengineformaintenance,repair,toinstallorremovetheblower tubes.Theunitmustbestoppedandtheimpellernolongerturningto

avoidcontactwiththerotatingblades.

• Ifyoustrikeorcomeintocontactwithaforeignobject,stoptheengine immediatelyandcheckfordamage.Donotoperatebeforerepairing

damage.Donotoperatetheunitwithlooseordamagedparts.

• Useonlygenuinefactoryreplacementpartsandaccessoriesforthis unit.Theseareavailablefromyourauthorizedservicedealer.Useofany

unauthorizedpartsoraccessoriescouldleadtoseriousinjurytotheuser ordamagetotheunit,andvoidyourwarranty.

• Toreducefirehazard,replacefaultymufflerandsparkarrestor.Keepthe engineandmufflerfreefromgrass,leaves,excessivegreaseorcarbon

buildup.

• Neverpointtheblowerinthedirectionofbystanders,animals,windowsor

automobiles.

OTHERSAFETYWARNINGS

• Neverstoretheunit,withfuelinthetank,insideabuildingwherefumes mayreachanopenflame(pilotlights,etc.)orsparks(switches,electrical

• Allowtheenginetocoolbeforestoringortransporting.Besuretosecure theunitwhiletransporting.

• Storetheunitinadryplace,eitherlockeduporuphightoprevent unauthorizeduseordamage.Keepoutofthereachofchildren.

• Neverdouseorsquirttheunitwithwateroranyotherliquid.Keephandles dry,clean,andfreefromdebris.Cleanaftereachuse,seeCleaningand

Storageinstructions.

• Keeptheseinstructions.Refertothemoftenandusethemtoinstructother users.Ifyouloanthisunittoothers,alsoloantheseinstructionstothem.

SPECIAL NOTE: EXPOSURE TO VIBRATIONS THROUGH PROLONGED

USE OF GASOLINE POWERED HAND TOOLS COULD CAUSE BLOOD VESSEL OR NERVE DAMAGE IN THE FINGERS, HANDS,

AND JOINTS OF PEOPLE PRONE TO CIRCULATION DISORDERS OR ABNORMAL SWELLING. Prolonged use in cold weather has

been linked to blood vessel damage in otherwise healthy people. If

symptoms occur such as numbness, pain, loss of strength, change

in skin color or texture, or loss of feeling in the fingers, hands or

joints, discontinue use of this tool and seek medical attention. An anti-vibration system does not guarantee avoidance of these

problems. Users who operate power tools on a regular basis must

closely monitor their physical condition and the condition of this tool.

SAVE THESE INSTRUCTIONS

motors,etc.).

• 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.

SYMBOL MEANING SYMBOL MEANING

CRAFTSMAN 2 YEAR FULL WARRANTY

FOR 2 YEAR(S) from the date of purchase, this product is warranted against any defects in material or workmanship. Defective product will receive free repair or free replacement if repair is unavailable.

For warranty coverage details to obtain repair or replacement, visit the web site: www.craftsman.com

This warranty covers ONLY defects in material and workmanship. Warranty coverage does NOT include:

• Expendable items that can wear out from normal use within the warranty period, such as air cleaner or spark plug.

• Product damage resulting from user attempts at product modification or repair or caused by product accessories.

• 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 is void if this product is ever used while providing commercial services or if rented to another person. This warranty gives you specific legal

rights, and you may also have other rights which vary from state to state. Sears Brands Management Corporation, Hoffman Estates, IL 60179

APPLICATIONS

• Cleaning yards, garages, driveways, porches, patios, around walls, fences and more

Blower Tube

Nozzle --

On/Off Switch

Curved Tube

G ip

Oil Plug

Throttle Control

Spark Plug Cover

Starer Rope Grip

Primer Bulb

Air Filter Cover

ASSEMBLING UNIT Installing Blower Tube

1. Align the bump on the end of the

blower tube with the bump slot on

the bottom end of the blower outlet

Blower

Tube

Blower

Outlet _

(Fig. 1).

2. Insert the blower tube into the

blower outlet (Fig. 1).

3. Twist the blower tube clockwise until

it locks into place (Fig. 1).

Installing Nozzle/Curved Tube

Align the bump slot on the top end of the nozzle/curved tube with the

bump on the end of the blower tube

B,.... ////

Nozzle/ _,_ "_ Curved f..=_"_

(Fig. 2).

Place the nozzle onto the blower

tube (Fig. 2).

Twist the nozzle clockwise until tight

Tu_ Bump

(Fig. 2).

Fig. 1

Fig. 2

Bump

Removing the Blower Tube

1. Hold the unit firmly.

2. Insert a flathead screwdriver into the Tube Lock. Twist the screwdriver

counterclockwise 1/4 turn and hold (Fig. 3).

3. Grasp the blower tube and twist it counterclockwise (Fig. 3).

4. Pull the blower tube from the blower outlet.

Fig. 3

Removing the Nozzle/Curved Tube

1. Hold the blower tube firmly.

2. Grasp the nozzle and twist it counterclockwise until the nozzle unlocks from the blower tube.

3. Remove the nozzle from the blower tube.

RECOMMENDED OIL TYPE

FUELING THE UNIT

WARNING: OVERFILLING OIL CRANKCASE MAY CAUSE

SERIOUS PERSONAL INJURY. Check and maintain the

proper oil level in the crankcase; it is important and cannot be

overemphasized. Check the oil before each use and change it as

needed. See Changing the Oil.

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 the engine. To avoid damage to the unit, put oil in

the crankcase prior to starting the unit.

Fig. 4

This unit is supplied with one 2.03 fl.oz. (60 ml) bottle of SAE 30 SF, SG, SH oil

(Fig. 7). NOTE: Save the empty oil bottle. It

can be used to measure the

correct amount during future oil changes. See Changing the Oil.

Oil Plu_

1. Unscrew the top of the bottle of oil and remove the paper seal covering

the opening. Replace the top and cut

Fig. 5

the tip off the funnel spout (Fig. 4).

2. With the unit on a flat level surface, remove the oil plug (Fig. 5).

3. Pour the entire bottle of oil into the oil fill hole (Fig. 6).

NOTE: Never add oil to the fuel or fuel

tank.

:::: .......... Oil Fill Hole

4. Wipe up any oil that may have spilled and reinstall the oil fill plug.

Check oil before each use and change

Fig. 6

as needed. Refer to Checking the Oil Level. RECOMMENDED FUEL TYPE

Old fuel is the primary reason for poor unit performance. Be sure to use fresh, clean, unleaded gasoline.

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

_, WARNING: Fuel containing greater than 15% ethanol will

likely damage the engine and void the warranty.

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 30 days old), when using alcohol-blended fuel.

Using Blended Fuels If choosing 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 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.

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.

WARNING: Add fuel in a clean, level and 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. Remove the fuel cap (Fig. 7).

WARNING: Remove fuel cap slowly to avoid injury from fuel

spray. Never operate the unit without the fuel cap securely in place.

2. Place the gas container's spout into the fill hole on the fuel tank and fill.

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 any old gasoline in

Fuel Tank

Fig. 7

accordance to Federal, State and Local regulations.

WARNING: Operate this unit only in a well-ventilated outdoor

area. Carbon monoxide exhaust fumes can be lethal in a confined area.

WARNING: Avoid accidental starting. Make sure to be in the

starting position when pulling the starter rope (Fig. 10). To avoid serious injury, the operator and unit must be in a stable position

while starting.

NOTE: This unit has the Incredi-Pull TM starting system, which significantly

STARTING INSTRUCTIONS

NOTE: When starting the unit, make

1. Check the oil level in the crankcase.

2. Fill the fuel tank with fresh, clean

3. Slowly press the primer bulb 10

4. Place the choke lever in Position 1

NOTE: DO NOT squeeze the trigger

5. Crouch in the starting position and

6. Place the choke lever in Position 2

7. Pull the starter rope 3 to 5 times to

8. Squeeze the throttle control and

9. While squeezing the throttle control,

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

IF WARM... place the choke lever in Position 2, making sure to

STOPPING INSTRUCTIONS

1. Release the throttle control and allow the engine to cool down by idling.

2. Press and hold the On/Off Control switch in the OFF (O) position until the

reduces the effort required to pull the starter rope.

On/Off Control

sure it is not directed at

bystanders or loose debris.

Refer to Checking the Oil Level.

unleaded gasoline. Refer to Fueling the Unit.

Fig. 8

times. Some amount of fuel should be visible in the primer bulb and fuel

lines (Fig. 9).

(Fig. 9).

while starting (Fig. 8).

pull the starter rope 5 times (Fig. 10).

Primer Bulb

Fig. 9

(Fig. 9).

start the engine.

allow the engine to warm up for 30- 60 seconds.

place the choke lever in Position 3 (Fig. 9) and continue to warm for an

additional 60 sec. The unit may be

Fig. 10

used during this time.

in Position 3 and pull the starter rope 3 to 8 times. The engine

should start. If not, repeat.

NOT squeeze the throttle trigger, and follow steps 7 thru 9 above.

engine comes to a complete stop (Fig. 8).

Sta i1iingn

HOLDING THE BLOWER

Before operating the unit, stand in the operating position and check for the

following:

• The unit in the right hand and on the right side of the body. Do not block

the air intake which will affect the

unit's performance (Fig. 11).

• If the conditions are dusty, the

operator is wearing a dust mask or face mask

• The unit is in good working condition

• The tubes are in place and secure

OPERATING TIPS Using the Variable Speed Cruise Control

For longer periods of operation and to cruise eliminate possible finger fatique.

1. Move the variable speed cruise

control toward the FAST position to

incrementally increase or maintain

the unit's engine speed (Fig. 12). When the variable speed cruise

control is pressed, the trigger will

recede into the handle.

2. To decrease engine speed, move the Fig.12

variable speed cruise control to the SLOW position and the trigger will return to idle (Fig. 12).

Other Tips

• Always use a firm grip when holding the unit.

• To reduce the risk of hearing loss, hearing protection is required.

• Operate power equipment only at reasonable hours when people might not be disturbed. Comply with times listed in local ordinances. Usual

recommendations are 9:00 am to 5:00 pm, Monday through Saturday.

• To reduce noise levels, operate the unit at the lowest possible speed to

do the job.

• Use rakes and brooms to loosen debris before blowing.

• Watch for bystanders, open windows or cars; blow debris safely away.

• Use the curved tube extension so the unit can work closer to the ground.

• Clean up after using blowers and other equipment. Dispose of debris

appropriately.

' i

Fig. 11

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

FREQUENCY MAINTENANCE REQUIRED SEE Every 10 hours Clean air filter p. 7 First 10 hours Change oil p. 6

Every 40 hours Change oil p. 6

CHECKING THE OIL LEVEL The importance of checking and

maintaining the proper oil level inthe crankcase cannot be overemphasized.

Check oil before each use:

1. Stop the engine and allow oil to drain ............................_ ()ilFill Line- _ ....

2. Place the engine on a level surface.

3. Clean the area around the oil plug

4. Remove the oil plug (Fig. 14).

5. Look into the oil fill hole (use a

6. If the oil level is not touching the

NOTE: Do not overfill the unit. NOTE: Make sure the O-ring is in

CHANGING THE OIL Change the oil while the engine is still

warm. The oil will flow freely and carry away more impurities.

1. Remove the oil fill plug.

2. Pour the oil out of the oil fill hole and

3. Wipe up any oil residue on the

4. Refill the crankcase with 2.03 fluid

NOTE: Use the bottle and spout

5. Check the level, See Checking the

6. Once full, replace the oil plug.

such as replacement or repair of the emission control devices and system. If unsure about these procedures or tools are not

available; take the unit to Sears or other qualified service dealer. Call 1-800-4-MY-HOME® for more information.

Check rocker arm to valve clearance and adjust p. 7 Check spark plug condition and gap p. 7

into the crankcase.

before removing it. Keep dirt, grass Fig.13. clippings, and other debris out of the

engine. Oil Plug

O-Ring --

flashlight if needed). The oil should be just touching the innermost

thread (Fig. 13). OilFillHole innermost thread on the oil fill hole,

add a small amount of oil to the oil fill hole and recheck (Fig. 13). Repeat

this procedure until the oil level reaches the innermost thread on the

oil fill hole.

place on the oil plug when checking and changing the oil

(Fig. 14).

into a container by tipping the unit

to a vertical position (Fig. 15). Allow

ample time for complete drainage. FillLevel

unit and clean up any oil that may have spilled. Dispose of the oil

according to Federal, State and local regulations.

ounce (60 ml) of SAE 30 SF, SG, SH oil (Fig. 17).

saved from initial use to measure the correct amount of

oil. The fill line on the bottle's label measures approximately

2.03 ounces (60 ml) (Fig. 16).

Oil Level.

Fig. 14

Fig. 15

Fig. 16

Fig. 17

AIR FILTER MAINTENANCE

WARNING: To avoid serious personal injury, always turn the

unit off and allow it to cool before cleaning or maintaining it.

Cleaning the Air Filter Failure to maintain the air filter will VOID the warranty.

1. To open the air filter cover, push the tab on the left side of the cover

inward and pull the air filter cover slightly out and to the right (Fig. 18).

2. Remove the air filter (Fig. 18).

3. Wash the filter in detergent and water. Making sure to rinse the filter

thoroughly and allow it to dry. slot Tab

4. Lightly coat the filter with clean SAE Air Filter "Cover 30 motor oil. Fig.18

5. Squeeze the filter to spread and remove excess oil.

6. Replace the filter.

NOTE: Operating the unit without the air filter will VOID the warranty.

7. To reinstall the air filter cover, position the hooks on the right side of the air filter cover into the slots at the right side of the back plate (Fig. 18).

8. Swing the cover to the left and press closed so the air filter cover tab snaps into the slot on the back plate (Fig. 18).

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. 19). NOTE: Careless adjustments can seriously damage to the unit. A Sears or

other qualified service dealer should make carburetor adjustments.

Check Fuel Old fuel is usually the reason for poor 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 prior to adjusting the idle speed screw. Refer to Air Filter Maintenance.

Adjust Idle Speed Screw If, after checking the fuel and cleaning the air filter, the engine still will not

idle, adjust the idle speed screw as follows:

1. Start the engine and warm up according to the Starting/Stopping

Instructions.

2. Release the 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. 19). Turn the idle speed @U screw 1/8 of a turn clockwise at a f_ IdleAdjustment

time until the engine idles smoothly. It J screw

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 Fig. 19

• there is a loss of engine power

take the unit to a Sears or other qualified service dealer. ROCKER ARM CLEARANCE

_IL WARNING: To avoid serious personal injury, always turn the

unit off and allow it to cool before cleaning or maintaining it.

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.

• The engine must be cold when checking or adjusting the rocker arm

clearance.

• This task should be performed inside, in a clean, dust free area.

1. Remove the 8 engine cover screws with the appropriate tool (Fig. 20), \

then remove the cover. Fig.20

NOTE: Make sure to store the screws

so that they can be reinstalled

into their original holes.

2. Disconnect the spark plug wire.

Rocker

Arm

Cover

Screw

3. Clean dirt from around the spark Spark plug and rocker arm cover, g

Remove the spark plug from the cylinder by turning a 5/8 in. socket

counterclockwise.

4. Remove the screw holding the rocker arm cover with the appropriate tool

(Fig. 21). Remove the rocker arm

Fig. 21

Adjustment Nut

Rocker Arm

cover and gasket.

5. Turn the flywheel 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 by looking in the spark plug hole

(Fig. 21)

• Both rocker arms move freely, and both valves are closed.

_ 0.003-0.006 in.

9_(0.076-0.152 mm) Valve

Feeler Gauge Stem

Fig. 22

If these statements are not true, repeat this step.

6. Slide the feeler gauge between the rocker arm and the valve return spring. Measure the clearance between the valve stem and rocker arm

(Fig. 22). Measure both the intake and exhaust valves.

The recommended clearance for both intake and exhaust is .003 - .006 in.

(.076 - 0.152 mm). Use a standard automotive .005 in. (0.127 mm) feeler

gauge. The feeler gauge should slide between the rocker arm and valve stem with a slight amount of resistance, without binding. See Figures 22.

7. If the clearance is not within specification:

a. Turn the adjusting nut using a 5/16 inch (8 mm) wrench or nut driver (Fig. 22).

• To increase clearance, turn the adjusting nut counterclockwise.

• To decrease clearance, turn the adjusting nut clockwise.

b. Recheck both clearances, and adjust as necessary.

8. Reinstall the rocker arm cover using a new gasket (Fig. 21). Torque the screw to: 20-30 in*lb (2.2-3.4 N.m).

9. Check the spark plug and reinstall. See Replacing the Spark Plug.

10. Reinstall the spark plug wire.

11. Reinstall the engine cover. Check alignment of the cover before tightening the screws. Tighten screws.

NOTE: Make sure that the screws are reinstalled into their original holes

(Fig. 20).

REPLACING THE SPARK PLUG Use a replacement part number 753-05784 or Champion spark plug

#RDZ4H. The correct spark gap is 0.025 in. (0.635 mm).

1. Stop the engine and allow it to cool.

2. Open the spark plug cover (Fig. 23).

3. Grasp the plug wire firmly and pull the cap from the spark plug.

4. Clean dirt from around the spark plug. Remove the spark plug from the cylinder head by turning a 5/8 in. socket counterclockwise.

WARNING: Do not sand blast, scrape or clean spark plug

electrodes. Grit in the engine could damage the cylinder.

5. Replace cracked, fouled or dirty spark plug. Set the spark gap at

0.025 in. (0.635 mm) using a feeler gauge (Fig. 24).

6. Install a correctly-gapped spark plug in the cylinder head. Turn the 5/8 in.

socket clockwise until snug.

7. Reinstall the spark plug cover. If using a torque wrench, torque to:

110-120 in.*lb. (12.3-13.5 N.m)

Fig. 23

Do not over tighten.

(O.O325imnm)l_

Fig. 24

CLEANING

Use a small brush to clean off 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 housing or handle. Wipe off any moisture with a soft cloth.

STORAGE

• Never store the unit with fuel in the tank where fumes may reach an open flame 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 are a.

• Store the unit out of the reach of children.

LONG TERM STORAGE

1. Drain all gasoline from the gas tank into a container. Do not use gas that

has been stored for more than 30 days. Dispose of the old gasoline in

accordance to Federal, State, and Local regulations.

2. Start the engine and allow it to run until it stalls. This ensures that all gasoline has been drained from the carburetor.

PROBLEM SOLUTION

Primer bulb wasn't pressed enough Slowly press primer bulb 10 times

3. Allow the engine to cool. Remove the spark plug and put 5 drops of high quality motor oil into the cylinder. Pull the starter rope slowly to distribute

the oil. Reinstall the spark plug.

NOTE: Remove the spark plug and drain all of the oil from the cylinder

before attempting to start the blower after storage.

4. Change the oil, referring to Changing the Oil. Dispose of the old oil in accordance to Federal, State and Local regulations.

5. Thoroughly clean the unit and inspect for any loose or damaged parts. Repair or replace damaged parts and tighten loose screws, nuts or bolts.

The unit is ready for storage.

TRANSPORTING

• Allow the engine to cool before transporting.

• Secure the unit while transporting.

• Drain the gas tank before transporting.

• Tighten gas cap before transporting.

Fouled spark plug Replace or clean the spark plug

Improper idle speed Adjust according to the Idle Speed Adjustments section.

Fouled spark plug Replace or clean the spark plug

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+ 16 hidden pages

Craftsman 316.794831 Operator's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual