STIHL BR 400 Owner's Manual

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Parts and Controls	2	Replacing the Starter Rope		This Manual contains operating and
Safety Precautions	4	and Rewind Spring	20	safety instructions for all STIHL BR 320,
Assembling the Blower	10	Operating Instructions	23	BR 320 L, BR 400 blowers.
Using the Blower	11	Storing the Machine	23	Pay special attention to the safety
Fuel	12	Maintenance Chart	24	precautions outlined on pages 4 to 9.
Fueling	13	Specifications	25	Allow only persons who understand this
Starting	14			Manual to operate your blower.
Cleaning the Air Filter	16	STIHL Incorporated Federal and		To receive maximum performance and
Adjusting the Carburetor	16	California Emission Control Warranty		satisfaction from your STIHL blower, it is
Motormanagement	16	Statement	27	important that you read and understand
Checking the Spark Plug	18			the maintenance and safety precautions
Spark Arresting Screen in Muffler	19			before using your blower.
				Contact your STIHL dealer or the STIHL
				distributor for your area if you do not
				understand any of the instructions in this
				Manual.
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				Because a blower is a high-speed tool,
				some special safety precautions must
				be observed as with any other power
				tool to reduce the risk of personal injury.
				Careless or improper use may cause
				serious or even fatal injury.
				STIHL’s philosophy is to continually
				improve all of its products. As a result,
				engineering changes and improvements
				are made from time-to-time.
				If the operating characteristics or the
				appearance of your blower differ from
				those described in this Manual, please
Printed on chlorine-free paper				contact your STIHL dealer for information
				and assistance.

1999 Andreas Stihl AG & Co., Waiblingen

0458 353 3021. M10. L9. PM. Printed in USA

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					1	= Nozzle
					2	= Blower tube
					3	= Control handle
					4	= Throttle trigger
					5	= Setting lever
		5			6	= Stop switch
1					7	= Pleated hose
	4	6	8		8	= Harness
		3			9	= Back plate
			9	11	10	= Back padding
					11	= Air filter
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16	15	14
18	17
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12= Rubber buffers

13= Spark plug boot

14= Muffler (with spark arresting screen)

15= Carburetor adjusting screws

16= Choke knob

17= Starter grip

18= Fuel filler cap

= Serial number

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Aims and widens the spray or airstream.

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Directs spray or airstream.

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Handle on the flexible hose to hold and direct the tube in the required direction.

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Controls the speed of the engine.

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Sets the trottle to various positions.

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Stops engine.

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For spraying, dusting or spreading in the desired direction.

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For carrying the unit.

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Helps protect the back of the user.

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Increases carrying comfort.

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Cover the air filter element.

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Elements designed to reduce the transmission of vibrations created by the engine to the operators back.

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Connects the spark plug to the ignition wire.

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Attenuates exhaust noises and diverts exhaust gases away from operator.

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For tuning carburetor.

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Eases engine starting by enrichting mixture.

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The grip of the pull starter, which is the device to start the engine.

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For closing the fuel tank.

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The use of any blower may be dangerous. It is important

that you read, fully understand and observe the follow-

ing safety precautions and warnings.

Reread the owner‘s manual and the safety instructions periodically.

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Careless or improper use of the machine may cause serious injury. Have your STIHL Dealer show you how to operate your blower. Observe all applicable local safety regulations, standards and ordinances.

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Minors should never be allowed to use a blower : Bystanders, especially children, and animals should not be allowed in the area where a machine is in use.

Never let the unit run unattended.

Do not lend or rent your machine without the owner‘s manual. Be sure that anyone using your unit understands the information contained in this manual. Most of these safety precautions and warnings apply to the use of all STIHL blowers. Different models may have different parts and controls. See the appropriate section of your owner‘s manual for a description of the controls and function of the parts of your machine.

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1.the operator

2.the blower

3.the use of the blower .

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You must be in good physical condition and mental health and not under the influence of any substance (drugs, alcohol, etc.) which might impair vision, dexterity or judgment. Do not operate a blower when you are fatigued .

Be alert - if you get tired while operating your machine, take a break. Tiredness may result in loss of control. Working with any blower can be strenuous. If you have any condition that might be aggravated by strenuous work, check with your doctor before operating the machine.

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Prolonged use of a blower, (or other machines) exposing the operator to vibrations may produce whitefinger disease (Raynaud‘s phenomenon) or carpal tunnel syndrome. These conditions reduce the hand‘s ability to feel and regulate temperature, produce numbness and burning sensations and may cause nerve and circulation damage and tissue necrosis.

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The STIHL BR 320, 400 is equipped with an antivibration system (AV). The AV system is designed to reduce the transmission of engine vibrations to the operator’s hands. An AV system is recommended for those operators who use blowers on a regular or sustained basis.

Antivibration systems do not guarantee that you will not sustain whitefinger disease or carpal tunnel syndrome. Therefore, continual and regular users should monitor closely the condition of their hands and fingers. If any of the above symptoms appear, seek medical advice immediately.

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Clothing must be sturdy and snug-fitting, but allow complete freedom of movement. Avoid loose-fitting jackets, flared or cuffed pants, scarfs, unconfined long hair or anything that could be drawn into the air intake.

Wear overalls or long pants to protect your legs. Do not wear shorts.

Use of gloves when working with the blower is recommended.

Good footing is most important. Wear sturdy shoes with nonslip soles.

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To reduce the risk of injury associated with the inhalation of dust, use a face filter mask when using your blower in dusty conditions.

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Proper eye protection is a must. Even though the discharge is directed away from the operator, ricochets and bounce-backs can occur during blower operations.

Never operate a blower unless wearing goggles or properly fitted safety glasses with adequate top and side protection which comply with ANSI Z 87.1 (or your applicable national standard).

Blower noise may damage your hearing. Wear sound barriers (ear plugs or ear mufflers) to protect your hearing. Continual and regular users should have their hearing checked regulary.

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For illustrations and definitions of the blower parts see the chapter on "Parts and Controls"!

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Never modify a blower in any way. Only attachments supplied by STIHL or expressly approved by STIHL for use

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with the specific STIHL blower models are authorized. Although certain unauthorized attachment are useable for the STIHL blower, their use may be extremely dangerous.

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Always turn off the engine before taking the machine off your back and putting it down. When transporting your unit in a vehicle, properly secure it to prevent turnover, fuel spillage and damage to the machine.

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Before starting work, always inspect the rubber buffers which connect the engine to the pack frame. If the buffers are torn or damaged, they should be replaced by your STIHL dealer. Failure of one or more buffers may cause the engine or fuel tank to hit or rub against other parts, and may lead to serious injury from increased vibrations or from fire as the result of fuel leakage.

Adjust carrying harness to suit your size before starting work.

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This STIHL unit uses an oil-gasoline mixture for fuel (see the chapter on "Fuel" of your owner‘s manual).

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Gasoline is an extremely flammable fuel. If spilled

or ignited by a spark or other ignition source, it can cause fire and

serious burn injury or property damage. Use extreme caution when handling gasoline or fuel mix.

Do not smoke or bring any fire or flame near the fuel.

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Fuel your machine in well-ventilated areas, outdoors only. Always shut off the engine and allow it to cool before refueling. Relieve fuel tank pressure by loosening fuel cap slowly. Never remove fuel filler cap while engine is running.

Select bare ground for fueling and move at least 10 feet (3 m) from the fueling spot before starting the engine. Wipe off any spilled fuel before starting your blower and check for leakage.

Always tighten fuel filler cap securely after fueling.

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To reduce the risk of serious injury from burns, never attempt to refuel the unit until it has been completely removed from the operator.

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Check for fuel leakage while refueling and during operation. If fuel or oil leakage is found, do not start or run the engine until leak is fixed and spilled fuel has been wiped away. Take care not to get fuel on your clothing. If this happens, change your clothing immediately.

Always store gasoline in approved container.

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Unit vibrations can cause an improperly tightened fuel cap to loosen or come off and spill quantities of fuel. In order to reduce risk of fuel spillage and fire, tighten fuel cap by hand with as much force as possible.

The screw driver end of the STIHL combination wrench or other similar

tool can be used as an aid in tightening slotted fuel caps.

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You should always inspect your unit before starting it. Make sure the controls and safety devices are working properly.

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Your blower is a one-person machine. To reduce the risk of eye or other injury

from thrown objects, insure that bystanders are at least 50 feet (15m) away during use.

Stop the engine immediately if you are approached.

The assistance of another person may be needed in placing the unit on your back after starting. In order to reduce the risk of injury to the assistant from thrown objects or from contact with fumes, the engine should be kept at idle speed during this brief period, and your assistant should not stand in the area of the outlet nozzle or exhaust. Otherwise, the unit should be started and operated without assistance.

For specific starting instructions, see the appropriate section of your owner‘s manual. Place the machine on firm ground or other solid surface in an open area. Maintain good balance and secure footing.

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When you pull the starter grip, don‘t wrap the starter rope around your hand. Do not allow the grip to snap back, but guide the starter rope slowly back to permit the rope to rewind properly. Failure to follow this procedure may result in injury to hand or fingers and may damage the starter mechanism.

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Never operate your machine if it is damaged, improperly adjusted or not completely and securely assembled.

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Start and operate your unit outdoors in a ventilated area.

Keep the space behind the engine clear at all times to allow for the escape of hot and toxic exhaust fumes.

Operate your machine under good visibility and daylight conditions only. Work carefully.

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When working with the blower, always wear it on your back using the carrying harness. Wrap your fingers tightly around the handle, keeping the control handle cradled between your thumb and forefinger. Keep your hand in this position to have your machine under control at all times.

Make sure your control handle and grip is in good condition and free of moisture, pitch, oil or grease.

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To reduce the risk of personal injury, do not direct air blast towards bystanders, since the high pressure of the air flow could injure eyes and could blow small objects at great speed.

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Your blower produces poisonous exhaust fumes

as soon as the combustible engine is running. These gases (e.g. carbon monoxide) may be colorless and odorless.

To reduce the risk of serious or fatal injury from breathing toxic fumes, never run the blower indoors or in poorly ventilated locations. Ensure proper ventilation when working in trenches or other confined areas.

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Use of this product can generate dust, mists, and fumes containing chemicals known to cause respiratory disease, cancer, birth defects, or other reproductive harm. If you are unfamiliar with the risks associated with the particular dust, mists or fumes at issue, consult your employer, governmental agencies such as OSHA and NIOSH and other sources on hazardous materials. If the substance being blown or vacuumed is a commercial substance, review the material safety data sheet for that substance and / or consult the material manufacturer / supplier. The state of California and some other authorities, for instance, have published lists of substances known to cause cancer, reproductive toxicity, etc.

Control dust, mist and fumes at the source where possible. In this regard use good work practices and follow the recommendations of OSHA / NIOSH and occupational and trade associations. When the inhalation of toxic dust, mists and fumes cannot be eliminated, the operator and any bystanders should always wear a respirator approved by

NIOSH / MSHA for the substance at issue.

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Dust with silica in its composition may contain crystalline silica. Silica is a basic component of sand, quartz, brick, clay, granite and numerous other minerals and rocks, including masonry and concrete products. Repeated and / or substantial inhalation of airborne crystalline silica can cause serious or fatal respiratory disease, including silicosis. In addition, the state of California and some other authorities have listed respirable crystalline silica as a substance known to cause cancer. When encountering such materials, always follow the respiratory precautions mentioned above.

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Breathing asbestos dust is dangerous and can cause severe or fatal injury, respiratory illness or cancer. The use and disposal of asbestos containing products have been strictly regulated by OSHA and the Environmental Protection Agency. Do not blow or disturb asbestos or asbestos containing products, such as asbestos insulation. If you have any reason to believe that you might be disturbing asbestos, immediately contact your employer or a local OSHA representative.

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Always shut off the engine before cleaning or servicing the unit or replacing parts.

Never insert any foreign object into the air intake of the machine or into the nozzle of the blower. It wil damage the fan wheel and may cause serious injury to the operator or bystanders as a result of the object or broken parts being thrown out at high speed.

Do not place the blower on the ground when operating at high speed, because small objects such as sand, gras, dust, etc. may be pulled into the air intake and damage the fan wheel.

In the event of the machine catching fire (for whatever reason) throw it off quickly by releasing the spring catches on both sides of the harness.

In an emergency, you may slip out of the harness and throw off the machine quickly by first releasing the lap belt -

on machines that are so equipped -

and then lifting the tabs of the two sliding harness adjusters to slacken the shoulder straps. Try this procedure a number of times before using the machine in order to become accustomed with it. Pay attention to the direction of the wind, i.e., do not work against the wind.

To reduce the risk of stumbling and loss of control, do not walk backward while operating the machine.

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The blower may be used only for the operations described in your manual.

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The STIHL blower can be used for clearing leaves and grass clippings from gardens and driveways and can also be used for blow-sweeping paper, trash, dust, light snow etc. from large areas, sport stadiums or parks.

Gravel paths and walks, gravel-covered flat roofs, ditches etc. can be blow-swept quickly.

Other applications are blowing out pipes, drains, gutters and your carport.

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(special accessory)

The vacuum is designed to pick up dry material such as leaves, grass, small twigs and bits of paper.

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To reduce the risk of personal injury from fire and explosion, never attempt to pick up hot or burning substances (e.g. smoldering ashes, glowing cigarettes) or combustible fluids (e.g. gasoline, paint thinners).

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