STIHL BR 450, 450 C Instruction Manual
English Guide to Using this Manual Safety Precautions and Working Techniques Assembling the Unit Adjusting the Throttle Cable Fitting the Harness Fuel Fueling Information Before You Start Starting / Stopping the Engine Operating Instructions Replacing the Air Filter Adjusting the Carburetor Spark Plug Engine Running Behavior Storing the Machine Inspections and Maintenance by Dealer Maintenance and Care Minimize Wear and Avoid Damage Main Parts Specifications Maintenance and Repairs Disposal EC Declaration
English Guide to Using this Manual Symbols in text WARNING Warning where there is a risk of an accident or personal injury or serious damage to property. NOTICE Caution where there is a risk of damaging the machine or its individual components. Engineering improvements STIHL's philosophy is to continually improve all of its products. For this reason we may modify the design, engineering and appearance of our products periodically.
English The use of noise emitting power tools may be restricted to certain times by national or local regulations. Do not operate your power tool if any of its components are damaged. Do not use a pressure washer to clean your power tool. The solid jet of water may damage parts of the power tool. Accessories and replacement parts Only use parts and accessories that are explicitly approved for this power tool by STIHL or are technically identical.
English Transporting in a vehicle: – Properly secure your power tool to prevent turnover, fuel spillage and damage. Fueling Gasoline is an extremely flammable fuel. Keep clear of naked flames. Do not spill any fuel – do not smoke. This reduces the risk of unit vibrations causing the fuel cap to loosen or come off and spill quantities of fuel. Before Starting Check that your power tool is properly assembled and in good condition – refer to appropriate chapters in the instruction manual.
English During Operation In the event of impending danger or in an emergency, switch off the engine immediately by moving the setting lever to STOP or 0. Be particularly alert and cautious when wearing hearing protection because your ability to hear warnings (shouts, alarms, etc.) is restricted. To reduce the risk of fire, do not smoke while operating or standing near your power tool. Note that combustible fuel vapor may escape from the fuel system.
English 0009BA001 KN Using the Blower The machine is carried as a backpack. Hold and control the blower tube with your right hand on the control handle. Walk slowly forwards as you work – observe the nozzle outlet at all times – do not walk backwards – risk of stumbling. Always shut off the engine before taking the machine off your back. Working Technique Vibrations To minimize blowing time, use a rake and broom to loosen dirt particles before you start blowing.
English Vibration behavior is influenced by the condition of the AV elements – check the AV elements at regular intervals. Only use high-quality replacement parts in order to avoid the risk of accidents and damage to the machine. If you have any questions in this respect, consult a servicing dealer. Shut off the engine before rectifying problems. Assembling the Unit Mounting the Hose Clamps and Pleated Hose STIHL recommends the use of genuine STIHL replacement parts.
English Mounting the Control Handle 5 6 N 1 2 Push the hose clamp (5) (without retainer for throttle cable) onto the blower tube (6) – the positioning marks must face to the right. N Push the blower tube (6) into the pleated hose (2). Push the control handle (1) onto the mount (2) . N Insert and tighten down the screws (3) firmly. 5 6 2 3 N Open the clamping lever (3). N Move the control handle (1) along the blower tube (2) to the most comfortable position. N Close the clamping lever (3).
English Removing the nozzle (BR 700 X) Removing the nozzle (BR 700) 1 0416BA006 KN 1 2 N Rotate the nozzle (1) in the direction of the arrow until the lugs (3) are covered. N Pull the nozzle (1) off the blower tube (2). N Rotate the nozzle (1) in the direction of arrow as far as the stop. N Pull the nozzle (1) off the blower tube (2).
English Adjusting the Throttle Cable Fitting the Harness It may be necessary to correct the adjustment of the throttle cable after assembling the machine or after a prolonged period of operation. Fuel Your engine requires a mixture of gasoline and engine oil. Adjusting the Harness WARNING Adjust the throttle cable only when the unit is completely and properly assembled. N Set the throttle trigger to the full throttle position.
English Engine Oil If you mix the fuel yourself, use only STIHL two-stroke engine oil or another high-performance engine oil in accordance with JASO FB, JASO FC, JASO FD, ISO-L-EGB, ISO-L-EGC or ISO-L-EGD. STIHL specifies STIHL HP Ultra twostroke engine oil or an equivalent highperformance engine oil in order to maintain emission limits over the machine’s service life.
English Filling up with fuel Information Before You Start Take care not to spill fuel while fueling and do not overfill the tank. STIHL recommends you use the STIHL filler nozzle (special accessory). Positions of Master Control Lever Starting / Stopping the Engine Starting the Engine N Closing screw-type tank cap 3 N Place the cap in the opening. N Turn the cap clockwise as far as stop and tighten it down as firmly as possible by hand.
English Electric start (BR 450 C) Cranking Cold engine (cold start) The power tool is equipped with the STIHL electric starter for convenient starts. 0009BA013 KN The STIHL electric starter basically consists of the following components: Push the choke knob in and turn it to c. 0009BA028 KN 0009BA014 KN Push the choke knob in and turn it to o. N N Also use this setting if the engine has been running but is still cold.
English N Make sure you have a firm footing: Hold the unit with your left hand on the carrying handle and grip the control handle with your right hand. As soon as the engine runs Stopping the Engine N Operate the throttle trigger (2). 0416BA016 KN 2 0416BA012 KN Alternative: N Move the setting lever to 0 – the engine stops – the setting lever springs back to the on position.
English N Check that the spark plug boot is properly connected. N Repeat the starting procedure. Fuel tank run until completely dry N After refueling, press the manual fuel pump bulb at least five times – even if the bulb is filled with fuel. N Set the choke knob according to engine temperature. N Now start the engine.
English Adjusting the Carburetor Standard Setting 3 N Remove the filter element (3). N Replace dirty or damaged filters. N Fit the new filter in the filter housing. N Fit the filter cover. N Fit the screws and tighten them down firmly. L H The carburetor comes from the factory with a standard setting. 0002BA082 KN 0002BA089 KN General Information This setting provides an optimum fuel-air mixture under most operating conditions.
English N Turn the low speed screw (L) counterclockwise, no further than stop, until the engine runs and accelerates smoothly. N If the engine is down on power, difficult to start or runs poorly at idle speed, first check the spark plug. N Fit a new spark plug after about 100 operating hours – or sooner if the electrodes are badly eroded. Install only suppressed spark plugs of the type approved by STIHL – see "Specifications".
English N Use resistor type spark plugs with a properly tightened adapter nut. Installing the spark plug N 18 Screw home the spark plug, fit the boot and press it down firmly. Engine Running Behavior Storing the Machine If engine running behavior is unsatisfactory even though the air filter is clean and the carburetor is properly adjusted, the cause may be the muffler. For periods of 3 months or longer N Drain and clean the fuel tank in a well ventilated area.
English Inspections and Maintenance by Dealer Spark Arrestor in Muffler and Spacer If the engine is down on power, have the spark arrestor in the muffler checked. N Check spacer for damage. N Have damaged spacer replaced immediately.
English Complete machine Control handle Air filter Manual fuel pump (if fitted) Pickup body in fuel tank Fuel tank Carburetor Spark plug Cooling inlets Spark arresting screen in muffler Spacer Visual inspection (condition, leaks) X Clean X X Check operation X X Clean X Replace X Check X Have repaired by servicing dealer1) X Have checked by servicing dealer1) X Have replaced by servicing dealer1) X Clean X X Check idle adjustment X X Readjust idle X Readjust electrode gap
Blower air intake screen Check Adjust Safety labels Replace as required if damaged if problem every 12 months monthly weekly X Clean Throttle cable 1) X after each refueling stop before starting work The following intervals apply to normal operating conditions only. If your daily working time is longer or operating conditions are difficult (very dusty work area, etc.), shorten the specified intervals accordingly.
English Minimize Wear and Avoid Damage Observing the instructions in this manual helps reduce the risk of unnecessary wear and damage to the power tool. The power tool must be operated, maintained and stored with the due care and attention described in this owner's manual. servicing dealer. STIHL dealers are regularly given the opportunity to attend training courses and are supplied with the necessary technical information.
English Main Parts BR 450 BR 450 C 13 12 11 10 7 5 6 1 2 3 4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Straight Nozzle Blower Tube Union Nut Control Handle Start Switch Throttle Trigger Setting Lever Quick-Release Clamp Pleated Hose Back Padding Backplate Harness Carrying Handle Intake Screen Air Filter Cover Carburetor Adjusting Screws Manual Fuel Pump Choke Knob Starter Grip Fuel Filler Cap Fuel Tank Spark Plug Boot Muffler (with Spark Arresting Screen) 24 Spacer # Serial Numb
English Definitions 1. Straight Nozzle Aims and widens the airstream. 2. Blower Tube Directs the airstream. 3. Union Nut Allows simple adjustment of blower tube length. 4. 5. Control Handle Handle on the flexible hose to hold and direct the tube in the required direction. Designed to help protect against static electricity. Start Switch Engages the eletric starter. 6. Throttle Trigger Controls the speed of the engine. 7. Setting Lever For run and stop.
English Weight BR 450: BR 450 C: Version with bike handle 10.6 kg 11.5 kg Noise and Vibration Data Noise and vibration data are measured at idling and maximum rated speed in a ratio of 1:6. For further details on compliance with Vibration Directive 2002/44/EC see www.stihl.com/vib.
English Disposal EC Declaration of Conformity ANDREAS STIHL AG & Co. KG Badstr. 115 D-71336 Waiblingen Observe all country-specific waste disposal rules and regulations. Germany 000BA073 KN declare under our sole responsibility that STIHL products must not be thrown in the garbage can. Take the product, accessories and packaging to an approved disposal site for environmentfriendly recycling. Contact your STIHL servicing dealer for the latest information on waste disposal.
English BR 450, BR 450 C 27
English 28 BR 450, BR 450 C
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