Husqvarna 345BT Bubble Blower Leaf Blower User Manual

Husqvarna 345BT Bubble Blower Leaf Blower User Manual

Introduction

Product description
This product is a backpack blower with a fuel engine. We have a policy of continuous product development and therefore reserve the right to modify the design and appearance of products without prior notice.

Intended use
Use the product to blow leaves and other unwanted material from areas such as lawns, pathways and asphalt roads.

Product overview (Fig. 1)

1. Throttle control lever
2. Frame
3. Harness
4. Engine cover
5. Fan cover
6. Air intake screen
7. Air filter
8. Starter rope handle
9. Fuel tank
10. Waist belt
11. Spark plug
12. Vibration damping system
13. Choke control
14. Control handle
15. Stop switch with throttle control
16. Throttle trigger
17. Pipe angle
18. Clamp
19. Flexible hose
20. Control pipe
21. Cable clamp
22. Intermediate pipe
23. Blower nozzle
24. Operator’s manual
25. Combination wrench
26. Air purge bulb
27. High speed nozzle
28. Idle adjustment screw
29. Fan
30. Foot plate

Symbols on the product

WARNING! This product can be dangerous and cause serious injury or death to the operator or others. Be careful and use the product correctly.

Read the operator’s manual carefully and make sure that you understand the instructions before use.

Use approved hearing protection and approved eye protection. If the environment contains dust, use a breathing mask.

Use approved protective gloves during operation and maintenance. Use protective boots or shoes with non-slip soles. Use clothing of strong fabric and of full length.

Make sure that long hair is put above your shoulders

Do not wear jewelry or loose clothing during operation.

Mixture of gasoline and two-stroke oil.

Air purge bulb.

Keep all body parts away from hot surfaces.

Do not go near the impeller as it turns.

Choke, open position.

Choke, closed position.

Idle adjustment screw.

The Emissions Compliance Period referred to on the Emission Compliance label indicates the number of operating hours for which the engine has been shown to meet Federal emissions requirement. Maintenance, replacement or repair of the emission control devices and system may be performed by any non-road engine repair establishment or individual.

Look out for thrown objects. Thrown objects can cause serious injury. Use personal protective equipment.

Keep a safety distance at a minimum of 15 m to persons or animals.

yyyywwxxxxx:
The rating plate or the laser printing shows the serial number. yyyy is the production year and ww is the  production week.

Note: Other symbols/decals on the product refer to certification requirements for other commercial areas.

EMISSION CONTROL LABEL ABBREVIATIONS

General:
CAL| California| EXH/EVP| Exhaust and Evaporative| REGS| Regulations
DISPL| Displacement| EVAP| Evaporative| SORE| Small off road engines
ECS| Emission control system| HRS| Hours| US EPA| United States Environ- mental Protection Agen- cy
Exhaust emission control system:

ECM| Engine control module (Autotune)| OC| Oxidizing Catalyst
EM| Engine modifica- tion| TWC| Three way catalyst
Evaporative emission control systems:

Coextruded (Multi- layer)| P| Treated HDPE or PE| fg
Nylon| S| Sealed| gdg

Product liability

As referred to in the product liability laws, we are not liable for damages that our product causes if:

• the product is incorrectly repaired.
• the product is repaired with parts that are not from the manufacturer or not approved by the manufacturer.
• the product has an accessory that is not from the manufacturer or not approved by the manufacturer.
• the product is not repaired at an approved service center or by an approved authority.

Safety

Safety definitions
The definitions below give the level of severity for each signal word.

WARNING: Injury to persons.

CAUTION: Damage to the product.

Note: This information makes the product easier to use.

General safety instructions

WARNING: Read the warning instructions that follow before you use the product.

• Do not do changes to the product without approval from the manufacturer and always use original accessories. Modifications and/or accessories that are not approved can result in serious injury or thedeath of the operator or others.
• Do not use a damaged product. Do the safety checks and maintenance given in this operator’s manual. All other maintenance must be done by approved servicing personnel.
• All servicing and repair operations must be done by approved servicing personnel. If a part of the product is defective, speak to your servicing dealer.

Vibration safety
This product is for occasional operation only. Continuous or regular operation of the product can cause “white finger” or equivalent medical problems from vibrations. Examine the condition of your handsand fingers if you operate the product continuously or regularly. If your hands or fingers have discoloration, have pain, tingle, or are numb, stop work and speak to a physician immediately.

Safety instructions for operation

WARNING : Read the warning instructions that follow before you use the
product.

• This product can be dangerous and cause serious injury or death to the operator or others. Be careful and use the product correctly.
• Do an inspection of the product before use. Refer to Maintenance on page 12.
• Do not operate the product when you are tired, ill or under the influence of alcohol or other drugs that candecrease your vision, judgment or coordination.
• Install all covers and guards before use. To prevent electrical shock, make sure that the spark plug cap and ignition cable are not damaged.
• Do not touch the spark plug or ignition cable when the engine is on.
• Keep a safety distance at a minimum of 15 m to persons or animals. If persons, children or animals come nearer than 15 m, stop the product. Point the product away from persons, animals, open windows and other objects.
• Do not let children operate the product. Make sure that all operators read and understand the contents of this operator’s manual.
• Keep hands or other objects away from the blower housing during operation. Rotating parts can cause serious injury.
• Do not use the product if the air intake screen is not installed. Always make sure that the air intake screen is installed and not damaged before use.
• If an emergency occurs, release the waist belt and chest belt of the harness and let the product fall.
• Obey national regulations and directives.
• Keep all body parts away from hot surfaces.
• Too much vibration can cause damage to the circulation or the nervous system. Speak to your physician if you have symptoms, for example numbness, loss of feeling, tingling, pricking, pain, loss of strength or changes in skin color in your fingers, hands or wrists.
• Look out for thrown objects. Thrown objects can cause serious injury.
• Do not use the product in bad weather, for example fog, rain, strong winds and too cold environments. To do work in bad weather can cause tiredness and dangerous conditions.
• Make sure that you can move and keep a stable position. Do a check of the work area for possible obstacles, for example rocks. Be careful if you operate the product on a slope.
• Do not put the product on the ground with the engine on.
• Do not operate the product from high positions, for example on a ladder.
• Make sure that you can always be heard if an accident occurs.
• Make sure that the exhaust fume outlet is not blocked. To prevent damage to the product, keep obstacles at a minimum distance of 50 cm from the exhaust fume outlet.
• Do not start the product indoors, in bad airflow or near flammable material. The engine exhaust fumes contain carbon monoxide, which can cause carbon monoxide poisoning. The engine exhaust fumes are hot and can contain sparks which can start a fire.

Personal protective equipment

WARNING : Read the warning instructions that follow before you use the product.

• Use approved personal protective equipment when you use the product. Personal protective equipment cannot fully prevent injury but it can decrease the degree of injury. Speak to your dealer for more information.
• Use approved hearing protection. Long-term exposure to noise can result in permanent hearing damage.
• Use approved eye protection. If you use a visor, you must also use approved protective goggles. Approved protective goggles must agree with the ANSI Z87.1 standard in the USA or EN 166 in EU countries.
• Use protective gloves during operation and maintenance.
• Use protective boots or shoes with non-slip soles.
• Use clothing of strong fabric and of full length. Do not use jewelry or open shoes. To decrease the risk on injury, your clothing must be close-fitting but not limit your movements. Put your hair above your shoulders to prevent that your hair enters rotating parts or catches on branches.
• Use breathing protection when there is a risk of dust.
• Keep first aid equipment near.

Safety devices on the product

WARNING: Read the warning instructions that follow before you use the product.

• Do not use a product with defective safety devices.
• Do a check of the safety devices regularly. Refer to Maintenance on page 12.
• If the safety devices are defective, speak to your Husqvarna servicing dealer.

To do a check of the muffler

WARNING : Do not use a product with a defective muffler.

WARNING : The muffler becomes very hot during and after operation, also at idle speed. Use protective gloves to prevent burn injuries.

WARNING : The inner side of the muffler contains chemicals that may be carcinogenic. Do not touch the muffler if it is damaged.

Regularly do a visual check of the muffler. The muffler keeps noise levels to a minimum and sends exhaust fumes away from the operator. Refer to To examine and clean the cooling system on page 13

To do a check of the vibration damping system

1. Make sure that there are no cracks or deformation on the vibration damping units.
2. Make sure that the vibration damping units are correctly attached to the engine unit and handle unit.
   Refer to Product overview on page 6 for information about where the vibration damping system is on your product.

To do a check of the start/stop switch

1. Use the start/stop switch to stop the engine.
2. Make sure that the engine stops fully. To see where the start/stop switch is on your product, refer to Product overview on.

Harness safety
Always use the harness when you operate the product. If you do not use the harness, you cannot operate the product safely. This can result in injury to you or other persons. Make sure that the waist belt and chest strap are attached and correctly adjusted. There is a risk thatan open belt can go into the fan of the product

Fuel safety

WARNING : Read the warning instructions that follow before you use the product.

• Do not mix or add the fuel indoors or near a heat source.
• Do not start the product if there is fuel or oil on the product or on your body.
• Do not start the product if the engine has a fuel leak. Examine the engine for fuel leaks regularly.
• Always be careful with fuel. Fuel is flammable and the fuel fumes are explosive and can cause serious injury or death.
• Do not breathe in the fuel fumes, it can cause injury. Make sure that there is a sufficient airflow.
• Do not smoke near the fuel or the engine.
• Do not put the product or a fuel container near warm objects, an open flame, a spark or a pilot light.
• Always use approved containers for storage and transportation of fuel.

Safety instructions for maintenance

WARNING: Read the warning instructions that follow before you use the product.

• Stop the engine, remove the spark plug and let the engine become cool before maintenance and assembly.
• A blocked spark arrestor screen causes the engine to become too hot which causes damage to the engine.
• If the spark arrestor screen is frequently blocked, it can be a sign that performance of the catalytic converter is decreased. Speak to your servicing dealer to examine the muffler.

Assembly

Introduction

WARNING: Read and understand the safety chapter before you assemble the product.

To assemble the blower pipe and the control handle on the product

Note: Lubricate the tubes and flexible hose to make them easier to assemble.

1. Attach the flexible hose (A) to the pipe angle and the control pipe (B) with the clamps (C) and (D). ( Fig. 19)

2. Attach the handle holder (E) to the control pipe. Align the handle holder with the flange on the control pipe. (Fig. 20)
   

3. Adjust the position of the control handle to a safe and correct work position. Tighten the knob.

4. Attach the cable to the flexible hose with the cable clamp. (Fig. 21)
   

5. Attach the intermediate pipe to the control pipe. (Fig. 22)
   

6. Attach the blower nozzle to the intermediate pipe.
   Note: The blower nozzle can only be installed on the intermediate pipe.

7. For higher air speed, attach the high speed nozzle to the blower nozzle.

Operation

Introduction

WARNING : Read and understand the safety chapter before you use the product.

Fuel This product has a two-stroke engine.

CAUTION : Incorrect type of fuel can result in engine damage. Use a mixture of gasoline and two-stroke oil.

Premixed fuel
Use Husqvarna premixed alkylate fuel for best performance and extension of the engine life. This fuel contains less harmful chemicals compared to regular fuel, which decreases harmful exhaust fumes. The quantity of remains after combustion is lower with this fuel, which keeps the components of the engine more clean.

To mix fuel

Gasoline
Use good quality unleaded gasoline with a maximum of 10% ethanol contents.

CAUTION: Do not use gasoline with an octane grade less than 90 RON/87 AKI. Use of a lower octane grade can cause engine knocking, which causes engine damages.

Two-stroke oil

• For best results and performance use Husqvarna two-stroke oil.
• If Husqvarna two-stroke oil is not available, use a two-stroke oil of good quality for air-cooled engines. Speak to your servicing dealer to select the correct oil.

CAUTION: Do not use two-stroke oil for water-cooled outboard engines, also referred to as outboard oil. Do not use oil for four-stroke engines.

To mix gasoline and two-stroke oil

CAUTION: Small errors can influence the ratio of the mixture drastically when you mix small quantities of fuel. Measure the quantity of oil carefully and make sure that you get the correct mixture.

1. Fill half the quantity of gasoline in a clean container for fuel.
2. Add the full quantity of oil.
3. Shake the fuel mixture.
4. Add the remaining quantity of gasoline to the container.
5. Carefully shake the fuel mixture
   

To fill the fuel tank

1. Stop the engine and let the engine become cool.

2. Clean the area around the fuel tank cap. (Fig. 24)

3. Shake the container and make sure that the fuel is fully mixed.

4. Remove the fuel tank cap slowly to release the pressure.

5. Fill the fuel tank.
   

6.  Tighten the fuel tank cap carefully.

7. Clean fuel spillage on and around the product.

8. Move the product 3 m/10 ft or more away from the refueling area and fuel source before you start the engine.

Note : To see where the fuel tank is on your product, refer to Product overview on

To start a cold engine

1. If the engine is cold, put the choke control (A) to the closed choke position. Refer to Symbols on the product on page 6. (Fig. 25)
   

2. Push the air purge bulb (B) again and again for a minimum of 10 times and fuel starts to fill the airpurge bulb. It is not necessary to fill the air purge bulb fully.

3. Put the throttle control in the fast idle position. Align the guide marks on the throttle control lever and the control handle. (Fig. 26)
   

4. Put the product on a flat surface on the ground.

5. Hold the product with the left hand and put your foot on the foot plate. (Fig. 27 )
   

6. Pull the starter rope handle slowly with the right hand until resistance occurs.

7. Pull the starter rope handle quickly with the right hand until the engine starts or attempts to start, maximum 6 times. If the engine starts, move the choke lever gradually to the open position and continue to step 11. If the engine does not start, continue to step 9.

8. When the engine attempts to start, move the choke lever gradually to the open position.

9. Pull the starter rope handle quickly with the right hand until the engine starts, maximum 6 times.

10. Let the engine run for 30 seconds.

11. Put the throttle control at idle speed. ( Fig. 28)
    

12. Push the throttle trigger to adjust the blower speed. Refer to To use the throttle trigger on

To use the throttle trigger

• To increase the blower speed during operation, push the throttle trigger until you get the correct speed. (Fig. 29)
  

• To decrease the blower speed during operation,release the throttle trigger until you get the correct speed

To start the engine when the fuel is too hot

If the product does not start, the fuel can be too hot.

Note: Always use new fuel and decrease the operation time during warm weather.

1. Put the product in a cool area away from open sunlight.
2. Let the product cool down for 20 minutes at minimum.
3. Press the air purge bulb again and again for 10-15 seconds.
4. Obey the procedure to start a cold engine. Refer to To start a cold engine on .

To operate the product

• Operate the product at usual work hours. Obey local regulations.
• Decrease the pieces of equipment and select the correct speed for your task. Use the throttle at lowest position possible to prevent more noise and dust than necessary.
• Keep the blower nozzle near the ground.

Note: Husqvarna recommends that you use the full blower nozzle extension.

• Make a note of the wind direction and operate the product in the direction of the wind.
• Use applicable garden tools to release material from the ground.
• In areas with dust, use spray equipment to wet the area. This decreases the operation time.
• After operation, keep the product in storage vertically.

To stop the product

CAUTION: Do not stop the product at full speed

1. Push the stop switch. (Fig. 30)
   

Note: When the product stops, you can hear a knock sound. This is typical and is not an indication of a defective product.

To adjust the harness

1. Put on the harness of the product.

2. Put the waist belt around your waist and connect the belt buckle for the waist strap. (Fig. 31)
   

3. Tighten the waist belt strap. (Fig. 32)
   

4. Connect the belt buckle for the chest strap. (Fig. 33)
   

5. Adjust the position of the chest strap. (Fig. 34)
   

6. Tighten the chest strap. (Fig. 35)
   

7. Tighten the shoulder straps until the product is tight against your body. (Fig. 36)
   

8. Tighten the load lifter straps. (Fig. 37)
   
   

Introduction

WARNING: Read and understand the safety chapter before you do maintenance on the product.

Maintenance schedule

Make sure that the start/stop switch operates correctly. Refer to To do a check of the start/stop switch on page 9.| X| |
Examine the engine, the fuel tank and the fuel lines for leaks. Examine the fuel filter for contamination. Replace the fuel filter if it is necessary.| X| |
Clean the air filter. Replace the air filter if it is necessary.| X| |
Tighten nuts and screws.| X| |
Examine the air intake and make sure that it is not blocked.| X| |
Examine the starter and the starter rope for damages.| | X|
Examine the vibration damping units for damages, cracks and deformation. Make sure that the vibration damping units are correctly installed.| | X|
Examine the spark plug. Refer to To do a check of the spark plug on page 13.| | X|
Clean the cooling system.| | X|
Clean the external surface of the carburetor and the area around it.| | X|
Clean the fuel tank.| | | X
Examine all cables and connections.| | | X
Examine and clean the spark arrestor screen on the muffler (for products without catalytic converter).| | X|
Examine and clean the spark arrestor screen on the muffler (for products with catalytic converter).| | | X
Examine the spark plug. Replace if it is necessary.| | | X

To adjust the idle speed

1. Make sure that the air filter is clean and that the air filter cover is attached.
2. Adjust the idle speed with the idle speed screw. To see where the idle speed screw is on your product, refer to Product overview on

To do a check of the spark plug

CAUTION: Use the recommended spark plug. Refer to Technical data on page 16. An incorrect spark plug can cause damage to the product.

1. Stop the engine and let the product become cool.

2. Clean the spark plug if it is dirty.

3. Make sure that the electrode gap is correct. Refer to Technical data on page 16. (Fig. 38)
   

4. Replace the spark plug monthly or more frequently if it is necessary.

To do maintenance on the muffler

CAUTION: If the spark arrestor screenis frequently blocked, it can be a sign that performance of the catalytic converter is decreased. Speak to you servicing dealer to examine the muffler. A blocked spark arrestor screen causes overheating and results in damage to the cylinder and piston.

CAUTION: The spark arrestor screen must be replaced if it is damaged. Do not use a product if the spark arrestor screen on the muffler is missing or defective

• Clean the spark arrestor screen on the muffler. Use a wire brush. ( Fig. 39)
  

• Let a servicing dealer replace or do service on the muffler and the spark arrestor screen after 50 hours of operation

To examine and clean the cooling system

The cooling system includes the cooling fins on the cylinder and the air intake screen.

1. Stop the engine.

2. Make sure that the cooling system is not dirty or blocked. If it is necessary, clean the air intake screen and cooling fins
   CAUTION: A dirty or blocked cooling system can increase the temperature of the engine and cause damage to the product. A clogged air intake screen decreases the blow force.

3. Examine the cooling system for damages. Make sure that the parts are attached correctly to the product.

To clean the air filter

CAUTION: Do not use a product without an air filter or with a damaged air filter. Dust in the air can cause damage to the engine.

1. Push the choke control to the closed position.

2. Remove the air filter cover (A).

3. Remove the pre-filter (B) from the air filter cover. (Fig. 40)
   

4. Remove the air filter (C) from the filter frame.

5. Clean the pre-filter and the air filter with warm water and soap.
   Note: An air filter that has been used for a long time cannot be fully cleaned. Replace the air filter regularly and always replace a defective air filter.

6. Clean the inner surface of the air filter cover (A) with a brush.

7. Put the air filter in the filter frame.

8. Attach the pre-filter to the air filter cover.

9. Attach the air filter cover to the product.

Troubleshooting

The engine is not possible to start

Check| Possible cause| Solution
Starter pawls.| Blocked or worn starter pawls.| Adjust or replace the starter pawl/s.
Clean around the starter pawl/s.
Speak to an approved servicing dealer.
Fuel tank.| Incorrect fuel type.| Drain the fuel tank and use correct fuel.
Carburetor.| Adjustment of the idle speed.| Adjust the idle speed with the idle adjustment screw.
Spark (no spark).| Spark plug is dirty or wet.| Make sure that the spark plug is dry and clean.
Electrode gap on the spark plug is incor- rect.| Clean the spark plug. Make sure that the electrode gap is correct.
Refer to technical data for the correct electrode gap.
**** Spark plug.| Spark plug is loose.| Tighten the spark plug.
There is un- wanted materi- al on the spark plug electro- des.| Make sure that the fuel mixture is correct.
Make sure that the air filter is clean.
Engine starts but stops again

Check| Possible cause| Solution
Fuel tank.| Incorrect fuel type.| Drain the fuel tank and use the correct fuel.
Check| Possible cause| Solution
Carburetor.| Engine will not operate cor- rectly at idle speed.| Speak to your servicing dealer.
Air filter.| Clogged air fil- ter.| Clean the air filter.

Transportation and storage

Transportation and storage

WARNING: To prevent the risk of fire, make sure that there are no leaks or fumes during transportation or storage. Make sure that there is no risk of sparks or fire.

• Empty the fuel tank before transportation or longterm storage. Push the air purge bulb to make sure that all fuel is removed. Discard the fuel at an applicable disposal location.
• Make sure that the product is clean and that a full servicing is done before long-term storage.
• Remove the spark plug and put approximately 15 ml of two-stroke oil into the cylinder. Turn the product 3 times and install the spark plug again.
• Attach the product safely to the vehicle during transportation.
• Keep the product in a dry, cool and clean space with good airflow. Keep the product away from children.

Technical data

Technical data

| Husqvarna 345BT (BP152HV)
---|---
Engine
Cylinder displacement, in.3 / cm3| 3.06 / 51.7
Idle speed, rpm| 2800
Catalytic converter| Yes
Ignition system 1
Spark plug| NGK BPMR7A/Champion RCJ6Y
Electrode gap, in. / mm| 0.023–0.027 / 0.6–0.7
Spark plug torque, ft-lb / Nm| 18–22 / 25–30
Fuel and lubrication system
Fuel tank capacity, US Pint / l| 2.1 / 1.0
Weight
Weight without fuel, lb / kg| 22.0 / 10.0
Fan performance
Max. air velocity with high speed nozzle, mph / m/s| 220 / 98.3
Air flow without high speed nozzle, cfm / m3/min| 490 / 13.9

References

• Husqvarna Forest & Garden

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