STIHL BR 45 Instruction Manual Owner's Manual .. -.. fP . -.
english / USA © 2002 Andreas Stihl AG & Co., Waiblingen 0458 374 8621. M2,5. G2. PM. Printed in USA Printed on chlorine-free paper. Printing inks contain vegetable oils; paper can be recycled. Contents Guide to Using this Manual .............. 2 Safety Precautions ........................... 3 Assembling the Blower ................... 10 Fitting Backpack ............................. 13 Fuel ................................................ 14 Fueling ............................................
english / USA Guide to Using this Manual Pictograms All the pictograms attached to the machine are shown and explained in this manual. The operating and handling instructions are supported by illustrations. In addition to the operating instructions, this manual may contain paragraphs that require your special attention. Such paragraphs are marked with the symbols described below: Symbols in text Warning where there is a risk of an accident or personal injury or serious damage to property.
english / USA Safety Precautions Warning! The use of any blower may be dangerous. It is important that you read, fully understand and observe the following safety precautions. !Warning! Reread the owner`s manual and the safety instructions periodically. !Warning! 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.
english / USA All the above mentioned precautions 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. Wear overalls or long pants to protect your legs. Do not wear shorts. Use of gloves when working with the blower is recommended.
english / USA THE USE OF THE BLOWER Transport Always turn off the engine before putting down blower. When transporting your unit in a vehicle, properly secure it to prevent turnover, fuel spillage and damage to the machine. Adjust carrying harness to suit your size before starting work. !Warning! 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.
english / USA Fold the grip flush with the top of the cap. If the grip does not lie completely flush with the cap and the detent on the grip does not fit in the corresponding recess in the filler neck, the cap is not properly seated and tightened and you must repeat the above steps. !Warning! !Warning! To reduce the risk of injury from thrown parts, check your fanwheel and fan housing for damage (cracks, nicks, chipping).
english / USA !Warning! !Warning! Since a muffler with a catalytic converter cools down less rapidly than conventional mufflers, always set your backpack blower down in the upright position and never locate it where the muffler is near dry brush, grass, wood chips or other combustible materials while it is still hot. Let the engine cool down sitting on concrete, metal, bare ground or solid wood (e.g. the trunk of a felled tree) away from any combustible substances.
!Warning! !Warning! 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.
english / USA When working with the blower, always 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 is in good condition and free of moisture, pitch, oil or grease. The blower fan between the air intake and output openings rotates whenever the engine is running.
english / USA Assembling the Blower !Warning! In order to reduce the risk of fire, do not modify or remove any part of the muffler or spark arrestor. Keep spark plug and wire connection tight and clean. The spark plug electrode gap should be checked with a feeler gauge at least every 50 operating hours and reset if necessary. Fit a new spark plug if the electrodes are badly pitted.
english / USA 8 1 1 4 7 2 6 1 : : Rotate the elbow (2) in the direction of the arrow (clockwise) until the stops (4) line up with the grooves in the fan housing stub (5) and then push it home in the direction of the arrow. 374BA005 KN 374BA004 KN 6 374BA006 KN 5 : Loosen the screw (6). Adjusting the Control Handle : Push home the blower tube (7) as far as stop. : Put the machine on your back. : Loosen the clamp screw (6).
english / USA 11 1 7 1 5 10 9 : 12 Push nozzle (9) onto the blower tube (7) as far as pin (10), position a (long) or position b (short), and rotate it in the direction of the arrow to lock in position. Removing the Elbow : Loosen the screws (1). 374BA008 KN 1 374BA002 KN b 374BA007 KN a : Use a suitable tool to raise the tab (11) on the fan housing stub (5). Rotate the elbow in the direction of the arrow (counterclockwise) and pull it out.
english / USA Fitting Backpack 3 3 A C 2 2 B D 271BA009 KN 1 Adjusting the harness straps Adjusting backpack Removing backpack : Pull the ends of the straps (A) downward to tighten the harness. : : : Lift the tabs of the sliding adjusters (B) to slacken the harness straps. Close and lock the hip belt (1) and adjust so that it fits snugly against your hip. : : Close and lock quick-action fastener (C) by pushing it together. Adjust harness straps (2) to correct length.
english / USA Fuel This engine is certified to operate on unleaded gasoline and with the mix ratio 50:1. Your two-stroke engine requires a mixture of brand-name gasoline and quality two-stroke engine oil with the classification TC. Use regular branded unleaded gasoline with a minimum octane rating of 89 RON. If the octane rating of the regular grade gasoline in your area is lower use premium unleaded fuel. Note: Units with a catalytic converter require unleaded gasoline.
english / USA Fueling Starting / Stopping the Engine 373BA008 KN 373BA030 KN 1 Before fueling, clean the filler cap and the area around it to ensure that no dirt falls into the tank. Always thoroughly shake the mixture in the canister before fueling your machine. After fueling, tighten fuel cap as securely as possible by hand.
english / USA 4 : Pull the starter grip slowly with your right hand until you feel it engage and then give it a brisk strong pull. Do not pull out the starter rope all the way – it might otherwise break. : Do not let the starter grip snap back. Guide it slowly back into the housing so that the starter rope can rewind properly. : Set the choke lever (3): For cold start to g For warm start to e : Press the fuel pump bulb (4) at least five times. 16 3 : Put the machine on the ground.
english / USA If conditions are unfavorable and the engine does not start after 10 pulls of the starter rope with the choke set to e : 1 373BA014 KN Set choke to g, pull the starter rope 5 times, move choke lever to e and continue cranking. If engine is warm: : Continue cranking until the engine runs (choke lever on e). 373BA015 KN 2 As soon as engine runs: To stop the engine: : : Move the setting lever (2) to the lower stop so that the engine settles down to idle speed.
english / USA Operating Instructions If the engine still does not start: During break-in period : A factory new machine should not be run at high revs (full throttle off load) for the first three tank fillings. This avoids unnecessary high loads during the break-in period. Move stop switch to $ As all moving parts have to bed in during the break-in period, the frictional resistances in the engine are greater during this period. The engine develops its maximum power after about 5 to 15 tank fillings.
english / USA Using the Blower Working techniques Recommended working techniques to minimize noise: To minimize blowing time, use rakes and brooms to loosen debris before blowing. : Operate power equipment only at reasonable hours - not early in the morning, late at night or during the noon-break when people might be disturbed. Comply with times listed in local ordinances. Usual recommendations are 9:00 a.m. to 12:00 a.m. and 03:00 p.m. to 5:00 p.m. on workdays for professionals.
english / USA Cleaning the Air Filter Motor Management Exhaust emissions are controlled by the design of the fundamental engine parameters and components (e.g. carburation, ignition, timing and valve or port timing) without the addition of any major hardware. 2 4 3 Dirty air filters reduce engine power increase fuel consumption and make starting more difficult. 295BA046 KN 295BA019 KN 1 : Take the filter (3) out of the housing (4). : Install a new filter.
english / USA Adjusting the Carburetor General Information Standard Setting L This setting provides an optimum fuel-air mixture under most operating conditions. H A slight correction of the setting may be necessary if engine power is not satisfactory when operating at high altitude or at sea level: 295BA044 KN The carburetor comes from the factory with a standard setting.
english / USA Catalytic Converter* Adjusting Idle Speed Units with a catalytic converter* may only be operated with unleaded gasoline and STIHL two cycle engine oil or equivalent quality two cycle engine oils in a mix ratio of 50:1 (see chapter “Fuel”). 295BA045 KN LA Engine stops while idling : Open the low speed screw (L) one full turn. : Turn idle speed screw (LA) clockwise until the engine runs smoothly – then turn it back about 1/ turn from that position.
english / USA Engine Running Behavior If engine is down on power, difficult to start or runs poorly at idling speed, first check the spark plug. Remove spark plug - see “Starting / Stopping the Engine“. : Clean dirty spark plug. : Check electrode gap (A) and readjust if necessary – see "Specifications". : Use only resistor type spark plugs of the approved range. Rectify problems which have caused fouling of spark plug: : Too much oil in fuel mix. : Dirty air filter.
english / USA Rewind Starter Storing the Machine To help prolong the wear life of the starter rope, observe the following points: For periods of about 3 months or longer : Drain and clean the fuel tank in a well ventilated area. : Run engine until carburetor is dry – this helps prevent carburetor diaphragms sticking together. Do not pull out the rope more than specified since it might break. : Do not let the starter grip snap back, guide it slowly into the housing.
english / USA Complete machine Control handle Air filter Filter in fuel tank Fuel tank Carburetor Visual inspection (condition, leaks) x x x x x x Readjust idle x x x Check x Clean or replace x Retighten Visual inspection Have replaced by STIHL dealer as required x x Clean Check idle adjustment if damaged if problem yearly monthly weekly after each refueling stop x Replace Clean BR 45 x Check Cooling inlets Anti-vibration elements x Replace Readjust electrode gap Accessible
english / USA Main Parts and Controls 1 Tab 1 2 Muffler (with spark arresting screen)* 45 3 Spark plug boot 2 4 Carburetor adjusting screws 8 9 6 7 5 Choke lever 15 10 11 12 6 Starter grip 16 7 Fuel pump 8 Filter housing 13 14 9 Fuel filler cap 10 Fuel tank 17 11 Setting lever 18 374BA015 KN 3 12 Throttle trigger 13 Stop switch 14 Control handle 15 Shoulder strap 16 Back padding 17 Waist strap 18 Support frame 19 Anti-vibration elements 20 Pleated hose 21 Throttle cable 22 Blower tub
english / USA Definitions 1. Tab For attaching blower tube to fan housing. 10. Fuel Tank For fuel mixture consisting of gasoline and oil. 18. Support Frame Accommodates powerhead and is carried on user’s back. 2. Muffler (with spark arresting screen) Reduces exhaust noises and diverts exhaust gases away from operator. Spark arresting screen is designed to help reduce risk of fire. 11. Setting Lever Holds throttle in different positions. 19.
english / USA Specifications EPA: The Emission Compliance Period referred to on the Emissions Compliance Label indicates the number of operating hours for which the engine has been shown to meet Federal emission requirements. Category A = 300 hours, B = 125 hours, C = 50 hours CARB: The Emission Compliance Period used on the CARB Air Index Label indicates the terms: Extended = 300 hours Intermediate = 125 hours Moderate = 50 hours Engine Single cylinder two-stroke engine Displacement: 1.66 ci (27.
english / USA STIHL Incorporated Federal and California Emission Control Warranty Statement Your Warranty Rights and Obligations The U.S. Environmental Protection Agency (EPA), the California Air Resources Board (CARB) and STIHL Incorporated are pleased to explain the Emission Control System Warranty on your model year 2000 and later equipment type engine. In California, new small off-road engines must be designed, built and equipped to meet the State's stringent anti-smog standards.
english / USA Warranty Period Warranty Work Maintenance Requirements The warranty periods will begin on the date the utility equipment engine is purchased by the initial purchaser and you have signed and sent back the warranty card to STIHL. If any emission related part on your engine is defective, the part will be replaced by STIHL Incorporated at no cost to the owner.
english / USA BR 45 31
english / USA 32 BR 45
04583748621 english/U.S.A.
