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Zenoah BT251 - page 1
O WNER / OPERA T OR MANU AL LINE TRIMMER 848-J25-93A1 (704) The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. W ARNING Before using our products, please read this manual carefully to understand the proper use of your unit. W ARNING BT251 ...
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Zenoah BT251 - page 2
SAFETY FIRST Instructions contained in warnings within this manual marked with a symbol concern critical points which must be taken into consideration to prevent possible serious bodily injury, and for this reason you are requested to read all such instructions carefully and follow them without fail. ■ WARNINGS IN THE MANUAL This mark indicates i ...
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Zenoah BT251 - page 3
2. Specifications ■ BT251 Overall size(LxWxH) ························································ 67.9(1725)x9.4(240)x19.5(495) in(mm) Dry weight w/o acc.··································································? ...
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Zenoah BT251 - page 4
For safe operation and maintenance, symbols are carved in relief on the machine. According to these indications, please be careful not to make a mistake. (a) The port to refuel the "MIX GASOLINE" Position: FUEL TANK CAP (b) The direction A to close the choke The direction B to open the choke Position: AIR CLEANER COVER (c) This unit is fi ...
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Zenoah BT251 - page 5
5 5. For safe operation 1. Read this manual carefully until you completely understand and follow all safety and operating instructions. 2. Keep this manual handy so that you may refer to it later whenever any questions arise. Also note, if you have any questions which cannot be answered herein, contact the dealer from whom you purchased the ...
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Zenoah BT251 - page 6
6 b. At night, at times of heavy fog, or at any other times when your field of vision might be limited and it would be difficult to gain a clear view of the working area. c. During rain storms, during lightning storms, at times of strong or gale-force winds, or at any other times when weather conditions might make it unsafe to use the produ ...
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Zenoah BT251 - page 7
■ BEFORE STARTING THE ENGINE 1. The area within a perimeter of 50 feet (15m) of the person using the product should be considered a hazardous area into which no one should enter. If necessary yellow warning rope, warning signs should be placed around the perimeter of the area. When work is to be performed simultaneously by two or more persons, ca ...
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Zenoah BT251 - page 8
8 Never place the throttle into the high speed position when starting the engine. 3. After starting the engine, check to make sure that the cutting attachment stops rotating when the throttle is moved fully back to its original position. If it continues to rotate even after the throttle has been moved fully back, turn off the engine and tak ...
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Zenoah BT251 - page 9
• IF SOMEONE COMES 1. Guard against hazardous situations at all times. Warn adults to keep pets and children away from the area. Be careful if you are approached. Injury may result from flying debris. 2. If someone calls out or otherwise interrupts you while working, always be sure to turn off the engine before turning around. ■ MAINTENANCE 1. ...
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Zenoah BT251 - page 10
10 5. For safe operation ■ HANDLING FUEL 1. The engine of the ZENOAH product is designed to run on a mixed fuel which contains highly flammable gasoline. Never store cans of fuel or refill the tank of the unit in any place where there is a boiler, stove, wood fire, electrical sparks, welding sparks, or any other source of heat or fire whi ...
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Zenoah BT251 - page 11
■ INSTALLING HANDLE (SE1) • Mount the handle to the shaft tube and clamp it at your best operating position. ■ INSTALLING DEBRIS GUARD (SE2) • Put the debris guard on the bearing case, attach it with the screw, washer, nut and support plate provided. (1) Support plate ■ INSTALLING CUTTING HEAD (SE3) 1. While locking the gear shaft by inse ...
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Zenoah BT251 - page 12
12 7. Fuel ■ RECOMMENDED MIXING RATIO GASOLINE 50:OIL 1 (when using ZENOAH genuine oil) •E xhaust emission are controlled by the fundamental engine parameters and components(eq., carburation, ignition timing and port timing) without addition of any major hardware or the introduction of an inert material during combustion. • These engi ...
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Zenoah BT251 - page 13
7. Fuel 13 again for at least one minute. As some oils may be difficult to agitate depending on oil ingredients, sufficient agitation is necessary for the engine to last long. Be careful that, if the agitation is insufficient, there is an increased danger of early piston seizing due to abnormally lean mixture. 5. Put a clear indication on t ...
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Zenoah BT251 - page 14
14 ■ STARTING ENGINE The cutting head will start rotating upon the engine starts. 1. Rest the unit on a flat, firm place. Keep the cutting head off the ground and clear of surrounding objects as it will start rotating upon starting of the engine. 2. Push the primer pump several times until overflown fuel flows out in the return tube. (OP1 ...
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Zenoah BT251 - page 15
8. Operation ■ STOPPING ENGINE 1. Release the throttle lever and run the engine for a half minute. 2. Shift the ignition switch to the STOP position. • Except for an emergency, avoid stopping the engine while pulling the throttle lever. ■ ADJUSTING IDLING SPEED (OP5) 1. When the engine tends stop frequently at idling mode, turn the adjusting ...
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Zenoah BT251 - page 16
16 3. Use a slow, deliberate action to cut heavy growth. The rate of cutting motion will depend on the material being cut. Heavy growth will require slower action than will light growth. 4. Never swing the unit so hard as you are in danger of losing your balance or control of the unit. 5. Try to control the cutting motion with the hip rathe ...
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Zenoah BT251 - page 17
9. Maintenance Maintenance, replacement, or repair of the emission control device and systems may be performed by any non-road engine repair establishment or individual. •A lways be sure to stop the engine before inspecting the brushcutter for problems or performing maintenance. •N ever alter the brushcutter or take the engine apart. •W hen r ...
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Zenoah BT251 - page 18
18 9. Maintenance 8 11 14 1 2 9 10 12 13 15 THIS SIDE UP THIS SIDE UP WIND LINE ...
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Zenoah BT251 - page 19
• Make sure that the engine has stopped and is cool before performing any service to the brushcutter. Contact with moving cutting head or hot muffler may result in a personal injury. ■ AIR FILTER • The air filter, if clogged, will reduce the engine performance. Monthly check and clean the filter element in warm, soapy water as required. Dry c ...
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Zenoah BT251 - page 20
20 ■ MUFFLER • Inspect periodically, the muffler for loose fasteners, any damage or corrosion. If any sign of exhaust leakage is found, do not use the brushcutter and have it repaired immediately. • Note that failing to do so may result in the engine catching on fire. ■ SPARK ARRESTER • The muffler is equipped with a spark arreste ...
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Zenoah BT251 - page 21
9. Maintenance hours of use for blockage, and remove any waste which has attached itself to the brushcutter. Note that it is necessary to remove the plug guard shown in Figure (MA4) in order to be able to view the upper part of the cylinder. • If waste gets stuck and causes blockage around the intake air cooling vent or between the cylinder fins, ...
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Zenoah BT251 - page 22
22 11. T r oubleshooting guide Case 1. Starting failure CHECK PROBABLE CAUSES ACTION fuel tank ➞ incorrect fuel ➞ drain it and with correct fuel fuel filter ➞ fuel filter is clogged ➞ clean carburetor adjustment screw ➞ out of normal range ➞ adjust to normal range sparking (no spark) ➞ spark plug is fouled/wet ➞ clean/dry ? ...
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Zenoah BT251 - page 23
13. Limited warranty Should any failure occur on the product under normal operating conditions within the applicable warranty period, the failed part will be replaced or repaired free of charge by a ZENOAH authorized dealer. WARRANTY PERIOD: 1 year (6 months if used professionally, and 30 days if used for rental purpose) from the date of initial pu ...
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Zenoah BT251 - page 24
PRINTED IN CHINA To Dealer: Please complete the following form at time of sale. To Purchaser: When your unit requires any repair, please bring or send it to the dealer with this sheet attached. Product Model: BT251 Equipment No.: Engine No.: ZENOAH Date ot Purchase: D / M / Y Use: Private Professional Rental Purchaser: Name: Address / Phone: Dealer ...
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