Craftsman Speed Start 316.79401 Series Operator'S Manual Download Page 3

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 must not operate the unit. Teens must be accompanied
and guided by an adult. 

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.

All guards and safety attachments must be installed properly
before operating the unit. 

Be aware of risk of injury to the head, hands and feet.

Carefully inspect the area before starting the unit. Remove all
debris that can be thrown or become entangled with the unit,
such as rocks, glass, nails, wire, string, etc. 

Clear the area of children, bystanders and pets; keep them
outside a 50-foot (15 m) radius, at a minimum. Even then, they are
still at risk from thrown objects. Encourage bystanders to wear
eye protection. If you are approached, stop the unit immediately.

Squeeze the throttle control and check that it returns
automatically to the idle position. Make all adjustments or
repairs before using the unit.

WHILE OPERATING

Wear safety glasses or goggles that meet current 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.

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 and Stopping

.

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

Always hold the unit with both hands when operating. Keep a
firm grip on both handles or grips.

Keep hands, face, and feet away from all moving parts. Do not
touch or try to stop any moving parts while they are in motion.

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 unit faster than the speed needed to do the job.
Do not run the unit at high speed when not in use.

Always stop the unit when operation is delayed or when walking
from one location to another.

Do not force the unit. It will do a better, safer job when used at
the intended rate.

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

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.

Turn the engine to off and disconnect the spark plug for
maintenance or repair.

Use only original equipment manufacturer (OEM) replacement
parts and accessories for this unit, as listed in the 

Parts List

section of this manual. Use of any other parts or accessories
could lead to serious injury to the user, or damage to the unit,
and void the warranty.

Keep the unit clean of vegetation and other materials that may
clog, gum or bind moving parts.

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.

• IMPORTANT SAFETY INSTRUCTIONS •

WARNING:

When using the unit, all safety rules must be

followed. Please read these instructions before operating
the unit in order to ensure the safety of the operator and any
bystanders. Please keep these instructions for later use.

3

BLOWER SAFETY

Do not insert anything into the air openings, blower tubes or
nozzle. Do not operate the unit if any of the air openings or
tubes are blocked. Keep the air openings free from dust, lint,
hair and anything else that may reduce airflow.

Do not operate the unit without the blower tubes attached.

Do not use the unit to spray liquids, especially flammable or
combustible liquids, such as gasoline. Do not use the unit in
areas where such liquids are present.

Do not use the unit for spreading chemicals, fertilizer or any
other substance that may contain toxic materials.

Do not set the unit down on any surface while the unit is
running. Debris can be picked up by the air intake and thrown
out the discharge opening, resulting in damage to the unit or
property or causing serious injury to bystanders or the operator.

During operation, never point the unit in the direction of people,
animals, windows or automobiles. Always direct blowing debris
away from people, animals, windows or automobiles.

Use extra caution when blowing debris near solid objects, such
trees, walls, fences, etc. When possible, blow away from such
objects, not toward them. 

Take care when working near valuable plants. The force of the
blown air could damage tender plants.

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
tank. Never remove the fuel tank cap or add fuel when the
engine is hot. Always loosen the fuel tank cap slowly to relieve
any pressure in the tank before fueling.

Always add fuel in a clean, well-ventilated outdoor area where
there are no sparks or 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 the unit at least 30 ft. (9.1 m) from the fueling source and
site before starting the engine. DO NOT smoke.

Never start or run the unit inside a closed room or building.
Breathing exhaust fumes can kill. Operate this unit only in a well
ventilated outdoor area.

WARNING:

Gasoline is highly flammable and its vapors

can explode if ignited. Take the following precautions:

Summary of Contents for Speed Start 316.79401 Series

Page 1: ...structions Operator s Manual SAFETY ASSEMBLY OPERATION MAINTENANCE PARTS LIST ESPAÑOL P 23 4 Cycle Electric Start Capable BACKPACK BLOWER Model No 316 79401 The last digit of the model number varies Sears Brands Management Corporation Hoffman Estates IL 60179 U S A Used under license Visit our website www craftsman com ...

Page 2: ...Muffler Assembly Part 753 05669 installed at a Sears Parts Repair Service Center 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 SYMBOL MEANING WARNING Signals a SERIOUS hazard Failure to obey a safety WARNING signal CAN result in serious injury to yourself or to others CAUTION Signals a MODE...

Page 3: ...connect the spark plug for maintenance or repair Use only original equipment manufacturer OEM replacement parts and accessories for this unit as listed in the Parts List section of this manual Use of any other parts or accessories could lead to serious injury to the user or damage to the unit and void the warranty Keep the unit clean of vegetation and other materials that may clog gum or bind movi...

Page 4: ...ion THROWN OBJECTS CAN CAUSE SEVERE INJURY WARNING Small objects can be propelled at high speed causing injury KEEP BYSTANDERS AWAY WARNING Keep all bystanders especially children and pets at least 50 feet 15 m from the operating area HOT SURFACE WARNING Do not touch a hot muffler or cylinder You may get burned These parts get extremely hot from operation When turned off they remain hot for a shor...

Page 5: ...ch as spark plugs or filters 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...

Page 6: ...cement 32 cc 1 95 cu in Blower Air Volume up to 500 cfm Blower Air Speed up to 150 mph Valve Clearance 0 003 0 006 in 0 076 0 152 mm Spark Plug Gap 0 025 in 0 635 mm Spark Plug Champion RDZ4H or equivalent plug Lubrication SAE 30 Oil Crankcase Oil Capacity 3 04 oz 90 ml Fuel Tank Capacity 26 oz 769 ml Approximate Unit Weight No fuel 15 lbs 6 8 kg 6 ASSEMBLY TOOLS REQUIRED Flat head Screwdriver T 2...

Page 7: ...th the bump slot on the lower blower tube Fig 3 2 Insert the upper blower tube into the lower blower tube Fig 3 3 While holding the upper blower tube twist the lower blower tube clockwise until it locks into place Fig 3 Installing the Nozzle 1 Align the bump on the lower blower tube with the bump slot on the nozzle Fig 4 2 Insert the lower blower tube into the nozzle Fig 4 3 While holding the lowe...

Page 8: ...tle cables Adjusting the Throttle Grip 1 Move the throttle grip to a location on the upper blower tube that provides the best grip Fig 6 2 Tighten the two screws on the throttle grip with a T 20 Torx screwdriver until the throttle grip is secure Fig 6 Fig 5 Throttle Cables Elbow Tube Zip Tie Fig 6 Upper Blower Tube Screws Throttle Grip Lower Blower Tube ...

Page 9: ...ce 4 Unscrew the oil fill plug Fig 8 5 Tilt the unit 30 to the side Fig 9 6 Pour the entire bottle into the oil fill hole Fig 8 DO NOT overfill Refer to Checking the Oil Level NOTE Never add oil directly to the fuel tank This unit has a four cycle engine DO NOT mix oil with gasoline 7 Wipe up any oil that may have spilled 8 Reinstall the oil fill plug NOTE Make sure the O ring is in place on the o...

Page 10: ...uel Always use fresh unleaded gasoline Use the fuel additive STA BIL or an equivalent Drain the tank and run the engine dry before storing the unit Using Fuel Additives Use a fuel additive such as STA BIL Fuel Stabilizer or an equivalent to inhibit corrosion and minimize gum deposits Add 0 8 oz 23 ml of fuel additive per gallon of fuel according to the instructions on the container NEVER add fuel ...

Page 11: ...ttle control Pull the starter rope with a controlled and steady motion 3 to 5 times to start the engine 9 Squeeze and hold the throttle control Allow the engine to warm up for 30 to 60 seconds 10 Continue to squeeze the throttle control Move the choke lever to Position 3 Fig 11 and continue warming the engine for an additional 60 seconds The unit may be used during this time NOTE The engine is pro...

Page 12: ...r to Position 2 Fig 11 9 DO NOT squeeze the throttle control Run the Speed Start accessory in intervals no longer than 2 seconds each until the unit starts 10 Remove the Speed Start accessory from the unit 11 Squeeze and hold the throttle control Allow the engine to warm up for 30 to 60 seconds 12 Continue to squeeze the throttle control Move the choke lever to Position 3 Fig 11 and continue warmi...

Page 13: ...up to loosen the waist support 2 Squeeze the top and bottom of the waist clip to disconnect the waist clip Fig 14 3 Remove the unit TIPS FOR BEST RESULTS Conserve water by using the blower instead of a hose to perform many outdoor cleaning actions Operate the unit only at reasonable hours not early in the morning or late at night when people might be disturbed Comply with times listed in local ord...

Page 14: ...se read the California EPA statement that came with the unit for a complete listing of terms and coverage for the emissions control devices such as the spark arrestor muffler carburetor etc WARNING To prevent serious injury never perform maintenance or repairs while the unit is running Always allow the unit to cool before servicing or repairing the unit Disconnect the spark plug wire to prevent th...

Page 15: ...ng the proper oil level cannot be overemphasized CHANGING THE OIL Change the oil while the engine is still warm The oil will flow freely and carry away more impurities 1 Clean the area around the oil fill plug Fig 8 to prevent debris from entering the oil fill hole 2 Unscrew the oil fill plug 3 Tip the unit to the side to pour the oil out of the oil fill hole and into a container Fig 17 Allow ampl...

Page 16: ...unit Fig 19 Air Filter Air Filter Cover Lock Tab Backplate Tabs Slots ADJUSTING THE IDLE SPEED NOTE Careless adjustments can seriously damage the unit A Sears or other qualified service dealer should make carburetor adjustments 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 Refer to Starting and Stoppi...

Page 17: ...repeat this step 8 Use a feeler gauge to measure the clearance between one of the valve stems and its corresponding rocker arm Fig 24 Repeat this process for the other valve stem and rocker arm The recommended clearance is 0 003 0 006 in 0 076 0 152 mm Use a standard automotive 0 005 in 0 127 mm feeler gauge The feeler gauge should slide between the rocker arm and valve stem with a slight amount o...

Page 18: ...g is cracked fouled or dirty replace it with a replacement part 753 05784 a Champion RDZ4H or an equivalent spark plug 6 Use a feeler gauge to set the air gap at 0 025 in 0 635 mm Fig 25 7 Install the spark plug in the cylinder head Tighten the spark plug with a 5 8 inch socket turning it clockwise until snug NOTE If using a torque wrench torque to 110 120 in lb 12 3 13 5 N m Do not over tighten 8...

Page 19: ... engine and allow it to run until it stalls This ensures that all fuel has been drained from the carburetor 3 Allow the engine to cool Remove the spark plug and put 5 drops of any high quality motor oil into the cylinder Pull the starter rope slowly to distribute the oil Reinstall the spark plug 4 Thoroughly clean the unit and inspect it for any loose or damaged parts Repair or replace damaged par...

Page 20: ...t accessory items sold separately Please contact your local Craftsman retailer call 1 800 4 MY HOME or visit www craftsman com for more information Fig 26 Speed Start Port Item No Description 316 85951 Plug In Power Start 316 85952 Power Bit Start 316 85953 Cordless Power Start ...

Page 21: ... fresh fuel The air filter is dirty Clean or replace the air filter PROBLEM SOLUTION The air filter is dirty Clean or replace the air filter The fuel is old over 30 days Drain the fuel tank and add fresh fuel The idle speed is incorrect Adjust the idle speed The fuel is old over 30 days Drain the fuel tank and add fresh fuel The air filter is dirty Clean or replace the air filter The spark plug is...

Page 22: ...22 NOTES ...

Page 23: ...RIDAD ENSAMBLAJE OPERACIÓN MANTENIMIENTO LISTA DE PIEZAS Motor de 4 tiempos Con Posibilidad de Arranque Eléctrico SOPLADOR DE MOCHILA Modelo No 316 79401 El último dígito del número de modelo varía 769 15053 00 05 18 Sears Brands Management Corporation Hoffman Estates IL 60179 U S A Utilizado bajo licencia Visite nuestro sitio web www craftsman com ...

Page 24: ...za No 753 05669 del conjunto del silenciador instalada en un Centro de Piezas y Servicio de Reparaciones de Sears Lea el manual del operador y siga todas las advertencias e instrucciones de seguridad No hacerlo puede ocasionar lesiones graves al operador y o a las personas presentes SÍMBOLO SIGNIFICADO ADVERTENCIA Indica un peligro GRAVE El no obedecer una señal de ADVERTENCIA de seguridad PUEDE c...

Page 25: ...y aún después de apagada la unidad No opere la unidad a una velocidad mayor que la necesaria para realizar el trabajo No ponga a funcionar la unidad a alta velocidad si no la está usando Apague siempre la unidad cuando la operación se demore o al caminar de un lugar a otro No fuerce la unidad Hará un trabajo mejor y más seguro a la velocidad para la que fue diseñada No intente alcanzar demasiado l...

Page 26: ...entes durante la operación Después de apagada la unidad se mantendrán calientes durante un rato SOPLADORAS LA ASPAS GIRATORIAS DEL IMPELENTE PUEDEN OCASIONAR LESIONES GRAVES ADVERTENCIA Detenga el motor y espere a que el impelente se detenga antes de cambiar los tubos limpiar o llevar a cabo cualquier mantenimiento OTRAS ADVERTENCIAS DE SEGURIDAD Detenga el motor asegúrese de que todas las piezas ...

Page 27: ...s al producto a consecuencia de intentos de modificación o reparación del usuario u ocasionados por accesorios del producto Las reparaciones necesarias por un accidente o por no operar o mantener el producto de acuerdo con todas las instrucciones suministradas El mantenimiento preventivo ni las reparaciones necesarias debido a una mezcla incorrecta de combustible o a al uso de un combustible viejo...

Page 28: ...iones se basan en la información del producto más reciente disponible en el momento de la impresión Nos reservamos el derecho de hacer cambios en cualquier momento sin previo aviso Tipo de motor Enfriado por aire de 4 tiempos Cilindrada 32 cc 1 95 pulg cúbicas Volumen de aire de la sopladora hasta 500 cfm Velocidad de aire de la sopladora hasta 150 mph Holgura de las válvulas 0 003 0 006 pulgadas ...

Page 29: ... la ranura del tope en el tubo inferior de la sopladora Fig 3 2 Inserte el tubo superior de la sopladora en el tubo inferior de la misma Fig 3 3 Mientras sostiene el tubo superior de la sopladora gire su tubo inferior hacia la derecha hasta que trabe en su sitio Fig 3 Instalación de la boquilla 1 Alinee el tope del tubo inferior de la sopladora con la ranura en la boquilla Fig 4 2 Inserte el tubo ...

Page 30: ...ra del regulador 1 Mueva la empuñadura del regulador a un lugar en el tubo superior de la sopladora que le sea cómodo a usted Fig 6 2 Utilizando un destornillador Torx T 20 apriete los dos tornillos situados en la empuñadura del regulador hasta que esté segura Fig 6 Fig 5 Cables del regulador Tubo acodado Cincho de plástico Fig 6 Tubo superior de la sopladora Tornillos Empuñadura del regulador Tub...

Page 31: ... Incline la unidad 30º hacia el lado Fig 9 6 Vierta el contenido de la botella completa en el orificio de llenado de aceite Fig 8 NO rebose el tanque Consulte la sección Cómo comprobar el nivel de aceite NOTA Nunca añada el aceite directamente al tanque de combustible Esta unidad tiene un motor de cuatro tiempos NO mezcle aceite con gasolina 7 Limpie todo el aceite que pueda haberse derramado 8 Re...

Page 32: ...un combustible mezclado Use siempre gasolina sin plomo fresca Use el aditivo STA BIL o un equivalente Vacíe el tanque y eche a andar el motor en seco antes de guardar la unidad Uso de aditivos para combustible Use un aditivo como el estabilizador de gasolina STA BIL o un equivalente para evitar la corrosión y minimizar los depósitos de goma Eche 0 8 onzas 23 ml de aditivo por galón de combustible ...

Page 33: ...lador Tire de la cuerda de arranque unas 3 a 5 veces con movimiento regulado y firme para arrancar el motor 9 Oprima el control del regulador y manténgalo presionado Deje que el motor se caliente de 30 a 60 segundos 10 Siga apretando el control del regulador Mueva la palanca del obturador a la Posición 3 Fig 11 y siga calentando el motor otros 60 segundos La unidad se puede usar en este momento NO...

Page 34: ...ente de 30 a 60 segundos 12 Siga apretando el control del regulador Mueva la palanca del obturador a la Posición 3 Fig 11 y siga calentando el motor otros 60 segundos La unidad se puede usar en este momento NOTA Cuando el motor acelera sin fallar la unidad ya se calentó como es debido NOTA Una vez que el motor se haya calentado debidamente el control de crucero puede ajustarse y el control del reg...

Page 35: ...VERTENCIA Para evitar lesiones personales graves nunca opere la unidad sin los tubos de la sopladora firmemente instalados RECOMENDACIONES PARA MEJORES RESULTADOS Conserve el agua usando la sopladora en vez de una manguera para hacer varias actividades de limpieza en exteriores Utilice la unidad solamente en horarios razonables o sea ni temprano en la mañana ni tarde en la noche cuando molestaría ...

Page 36: ...l 1 800 4 MY HOME NOTA Para ver la lista completa de términos y la cobertura de los dispositivos de control de emisiones como parachispas silenciador carburador etc lea la declaración de California EPA que viene junto con la unidad ADVERTENCIA Para evitar lesiones graves no haga nunca ningún mantenimiento ni reparación con la unidad funcionando Siempre deje que la unidad se enfríe antes de darle m...

Page 37: ...ner el nivel adecuado de aceite CÓMO CAMBIAR EL ACEITE Cambie el aceite con el motor todavía caliente El aceite fluirá libremente y arrastrará más impurezas 1 Limpie el área alrededor del tapón de llenado de aceite Fig 8 para evitar que entren desechos al orificio de llenado de aceite 2 Desenrosque el tapón de llenado de aceite 3 Incline la unidad hacia un lado para verter el aceite del orificio d...

Page 38: ...ibuidor de Sears u otro distribuidor de servicio calificado Si después de comprobar el combustible y limpiar el filtro de aire el motor aún no trabaja en vacío ajuste el tornillo de marcha en vacío de la siguiente manera 1 Arranque el motor Consulte la sección Arranque y Parada 2 Mueva el control de crucero a la posición LENTO SLOW y deje que el motor funcione en marcha en vacío Si el motor se apa...

Page 39: ... vástagos de las válvulas y su balancín correspondiente Fig 24 Repite este proceso para el otro vástago de la válvula y el balancín La holgura recomendada es de 0 003 pulgadas a 0 006 pulgadas de 0 076 mm a 0 152 mm Use un calibrador de hoja automotriz estándar de 0 005 pulgadas 0 127 mm El calibrador de hoja debe deslizarse entre el balancín y el vástago de la válvula con una ligera resistencia s...

Page 40: ...mplácela con una pieza de repuesto 753 05784 Champion RDZ4H o una bujía equivalente 6 Use un calibrador de hoja para ajustar abertura de la bujía a 0 025 pulgadas 0 635 mm Fig 25 7 Instale la bujía en la culata del motor Apriete la bujía en el sentido de las agujas del reloj con una llave de bujía de 5 8 hasta ajustarla NOTA Si usa una llave dinamométrica use un par de torsión de 110 120 pulgada l...

Page 41: ...la tapa al tanque de gasolina 2 Arranque el motor y déjelo funcionar hasta que se cale Con esto se asegura vaciar todo el combustible del carburador 3 Espere a que el motor se enfríe Quítele la bujía y eche 5 gotas de cualquier aceite de motor de alta calidad en el cilindro Tire despacio de la cuerda de arranque para distribuir el aceite Vuelva a poner la bujía 4 Limpie bien la unidad y compruebe ...

Page 42: ... separado Para más información comuníquese con su distribuidor local Craftsman llamando al 1 800 4 MY HOME o visite www craftsman com Número del artículo Descripción 316 85951 Arrancador de potencia eléctrico 316 85952 Arrancador de potencia para taladro 316 85953 Arrancador Eléctrico Inalámbrico Fig 26 Puerto Speed Start ...

Page 43: ...ina y añada combustible fresco El filtro de aire está sucio Limpie o cambie el filtro de aire PROBLEMA SOLUCIÓN El filtro de aire está sucio Limpie o cambie el filtro de aire El combustible está viejo tiene más de 30 días Vacíe el tanque de gasolina y añada combustible fresco La marcha en vacío no es la correcta Ajuste la velocidad de marcha en vacío El combustible está viejo tiene más de 30 días ...

Page 44: ...44 NOTAS ...

Page 45: ...45 NOTAS ...

Page 46: ...5 753 05907 Module Assembly 26 753 05690 Lead Wire 27 753 08026 Short Block Assembly includes 4 7 11 19 21 22 28 791 181020 Screw Item Part No Description 1 753 05669 Muffler Assembly includes 2 3 2 791 182361 Muffler Screw 3 753 05670 Muffler Gasket 4 791 181025 Screw 5 753 05671 Rocker Cover 6 753 05672 Rocker Cover O Ring 7 753 05784 Spark Plug 8 753 05673 Insulator Gasket 9 753 05248 Nut 10 75...

Page 47: ...ine Cover Assembly 25 791 182348 Impeller Screw 26 753 05771 Handle 27 753 06000 Concentrator Nozzle 28 753 06104 Electric Starter Adapter Item Part No Description 1 753 06001 Flared Nozzle 2 753 05971 Lower Blower Tube 3 753 05975 Throttle Grip Assembly 4 753 05991 Upper Blower Tube 5 753 05640 Clamp 6 753 05641 Flex Tube 7 753 05990 Elbow Tube 8 753 06340 Hip Belt 9 753 06141 Support System 10 7...

Page 48: ...To order replacement parts or schedule repair service Para ordenar piezas o pedir servicio de reparación 1 888 331 4569 ...

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