Instruction Manual
Page 2
... Statement 31 STIHl BT 121 English / USA Allow only persons who understand this manual. !Warning! Careless or improper use may cause serious or even fatal injury. 1 Printing inks contain vegetable oils; BA_SE_175_008_01_03.fm Contents Guide to operate your earth auger. M1. Because an earth auger is important... on page 3, before using your area if you do not understand any of personal injury. Contact your STIHL dealer or the STIHL distributor for your earth auger. paper can be observed to reduce the risk of the instructions in Germany Printed on chlorine-free paper....
... Statement 31 STIHl BT 121 English / USA Allow only persons who understand this manual. !Warning! Careless or improper use may cause serious or even fatal injury. 1 Printing inks contain vegetable oils; BA_SE_175_008_01_03.fm Contents Guide to operate your earth auger. M1. Because an earth auger is important... on page 3, before using your area if you do not understand any of personal injury. Contact your STIHL dealer or the STIHL distributor for your earth auger. paper can be observed to reduce the risk of the instructions in Germany Printed on chlorine-free paper....
Instruction Manual
Page 4
... Danger! Do not operate an earth auger when you how to the ground, resulting in this manual. BT 121 3 Bystanders, especially children, and animals should never be allowed in the area where an earth auger is in loss of an earth auger involves 1. Most of these safety...allowed to the use of your earth auger. the earth auger 3. Be alert - Observe all STIHL earth augers. The transfer of rotational (reactive) forces can cause the auger powerhead and handles to reduce the risk of any earth auger may result in use an earth auger. See the appropriate section of your...
... Danger! Do not operate an earth auger when you how to the ground, resulting in this manual. BT 121 3 Bystanders, especially children, and animals should never be allowed in the area where an earth auger is in loss of an earth auger involves 1. Most of these safety...allowed to the use of your earth auger. the earth auger 3. Be alert - Observe all STIHL earth augers. The transfer of rotational (reactive) forces can cause the auger powerhead and handles to reduce the risk of any earth auger may result in use an earth auger. See the appropriate section of your...
Instruction Manual
Page 5
...sustain whitefinger disease or carpal tunnel syndrome. Maintain a firm grip at all times, but do not guarantee that could be aggravated by the earth auger, good footing is above shoulder level. Therefore, continual and regular users should monitor closely the condition of their physician and the pacemaker manufacturer... use of whitefinger disease and carpal tunnel syndrome, please note the following: - These conditions reduce the hand's ability to vibration are recommended. 4 BT 121 This field may interfere with a pacemaker should wear proper protective apparel.
...sustain whitefinger disease or carpal tunnel syndrome. Maintain a firm grip at all times, but do not guarantee that could be aggravated by the earth auger, good footing is above shoulder level. Therefore, continual and regular users should monitor closely the condition of their physician and the pacemaker manufacturer... use of whitefinger disease and carpal tunnel syndrome, please note the following: - These conditions reduce the hand's ability to vibration are recommended. 4 BT 121 This field may interfere with a pacemaker should wear proper protective apparel.
Instruction Manual
Page 6
... when there is not in use with the engine running is running. Carrying an earth auger with the specific STIHL earth auger models are authorized. with the drilling tool pointing to rotate. BT 121 5 Therefore, to prevent turnover, fuel spillage and damage. Use of other confined areas.... Always stop the engine before putting the earth auger down a hot unit onto dry, flammable ...
... when there is not in use with the engine running is running. Carrying an earth auger with the specific STIHL earth auger models are authorized. with the drilling tool pointing to rotate. BT 121 5 Therefore, to prevent turnover, fuel spillage and damage. Use of other confined areas.... Always stop the engine before putting the earth auger down a hot unit onto dry, flammable ...
Instruction Manual
Page 7
... is an extremely flammable fuel. Take care not to cool before starting your owner's manual). !Warning! If this happens, change your earth auger in well-ventilated areas, outdoors. Fueling Instructions !Warning! Control dust and fumes at least 10 feet (3 m) from escaping gas vapor and... particular dust or fume at issue, consult your clothing. Fuel Mix Your STIHL earth auger uses an oilgasoline mixture for fueling and move at the source where possible. Fuel your clothing immediately. 6 BT 121 In order to release slowly. Wipe off the engine and allow any pressure...
... is an extremely flammable fuel. Take care not to cool before starting your owner's manual). !Warning! If this happens, change your earth auger in well-ventilated areas, outdoors. Fueling Instructions !Warning! Control dust and fumes at least 10 feet (3 m) from escaping gas vapor and... particular dust or fume at issue, consult your clothing. Fuel Mix Your STIHL earth auger uses an oilgasoline mixture for fueling and move at the source where possible. Fuel your clothing immediately. 6 BT 121 In order to release slowly. Wipe off the engine and allow any pressure...
Instruction Manual
Page 8
...!Warning! Injury could result. English / USA !Warning! To reduce the risk of the brake. !Warning! Regular maintenance is engaged. BT 121 7 Your earth auger should be used during starting it is damaged, improperly adjusted or not completely and securely assembled. See the chapter on the machine and ... secure footing. Unit vibrations can cause an improperly tightened fuel filler cap to reduce the risk of fuel. Operating the earth auger The earth auger should be started only when it is released. In order to loosen or come off and spill quantities of fuel spillage...
...!Warning! Injury could result. English / USA !Warning! To reduce the risk of the brake. !Warning! Regular maintenance is engaged. BT 121 7 Your earth auger should be used during starting it is damaged, improperly adjusted or not completely and securely assembled. See the chapter on the machine and ... secure footing. Unit vibrations can cause an improperly tightened fuel filler cap to reduce the risk of fuel. Operating the earth auger The earth auger should be started only when it is released. In order to loosen or come off and spill quantities of fuel spillage...
Instruction Manual
Page 9
...this procedure may result in a counterclockwise direction. !Warning! Important Adjustments !Warning! If you cannot set the correct idle speed, have your STIHL dealer check your hands. To reduce the risk of loss of injury from the hole. To reduce the risk of control, be present.... hard in heavy clay soil, bore about 1/3 way and remove the auger from a turning drilling tool do not use an earth auger with incorrect idle speed adjustment. Work carefully in slow steps frequently clearing drill. 8 BT 121 If you feel or hear the drilling tool strike a solid object, ...
...this procedure may result in a counterclockwise direction. !Warning! Important Adjustments !Warning! If you cannot set the correct idle speed, have your STIHL dealer check your hands. To reduce the risk of loss of injury from the hole. To reduce the risk of control, be present.... hard in heavy clay soil, bore about 1/3 way and remove the auger from a turning drilling tool do not use an earth auger with incorrect idle speed adjustment. Work carefully in slow steps frequently clearing drill. 8 BT 121 If you feel or hear the drilling tool strike a solid object, ...
Instruction Manual
Page 10
... start your thumb and fingers. Wrap your fingers tightly around the handles, keeping the handles cradled between your earth auger only outdoors in this position to cable and pipe locations. BT 121 9 In order to stop the rotation of the machine strikes a wire, it cannot drill through and the... powerhead begins to rotate so that the auger brake activating lever strikes the operator´s thigh and engages, the ...
... start your thumb and fingers. Wrap your fingers tightly around the handles, keeping the handles cradled between your earth auger only outdoors in this position to cable and pipe locations. BT 121 9 In order to stop the rotation of the machine strikes a wire, it cannot drill through and the... powerhead begins to rotate so that the auger brake activating lever strikes the operator´s thigh and engages, the ...
Instruction Manual
Page 11
...drilling tool or drilling spindle with your owner's manual. Do not attempt any signs of your earth auger or cause serious injury. Always shut off the engine before doing any part of cracks in...deny warranty. Check condition of tool changes, check immediately for longer than a few days. 10 BT 121 If behavior of drilling tool at your owner's manual. !Warning! Keep spark plug and wire ...section of this manual. It continues to the warranty statement near the end of your STIHL servicing dealer only. !Warning! However if you claim warranty for a short period after...
...drilling tool or drilling spindle with your owner's manual. Do not attempt any signs of your earth auger or cause serious injury. Always shut off the engine before doing any part of cracks in...deny warranty. Check condition of tool changes, check immediately for longer than a few days. 10 BT 121 If behavior of drilling tool at your owner's manual. !Warning! Keep spark plug and wire ...section of this manual. It continues to the warranty statement near the end of your STIHL servicing dealer only. !Warning! However if you claim warranty for a short period after...
Instruction Manual
Page 15
... 3 seconds - to position B. 14 BT 121 the activating lever is subject to engage the brake - Disengaging the Auger Brake : Move the activating lever to unwind a trapped auger If the auger snags on an obstacle in the hole (e.g. the auger must not rotate. roots or stones) the earth auger will rotate counterclockwise - If the auger brake fails, have it is...
... 3 seconds - to position B. 14 BT 121 the activating lever is subject to engage the brake - Disengaging the Auger Brake : Move the activating lever to unwind a trapped auger If the auger snags on an obstacle in the hole (e.g. the auger must not rotate. roots or stones) the earth auger will rotate counterclockwise - If the auger brake fails, have it is...
Instruction Manual
Page 16
...holes (3) line up. : Push retaining pin into the hole. : Spring clip on retaining pin must fit snugly around auger's shank. : Observe safety precautions - BT 121 15 Fitting the Auger Starting / Stopping the Engine English / USA 424BA006 : Shut off the engine. Starting : Press down the throttle trigger ...the starting throttle position. see chapter on the ground so that the drilling spindle faces up. : Engage the auger brake. : Pull retaining pin (1) out of the auger's shank. : Push the auger (2) onto the drilling spindle so that order. Put the earth auger on "Safety Precautions".
...holes (3) line up. : Push retaining pin into the hole. : Spring clip on retaining pin must fit snugly around auger's shank. : Observe safety precautions - BT 121 15 Fitting the Auger Starting / Stopping the Engine English / USA 424BA006 : Shut off the engine. Starting : Press down the throttle trigger ...the starting throttle position. see chapter on the ground so that the drilling spindle faces up. : Engage the auger brake. : Pull retaining pin (1) out of the auger's shank. : Push the auger (2) onto the drilling spindle so that order. Put the earth auger on "Safety Precautions".
Instruction Manual
Page 18
.... : Pull the starter rope several times to e even if the engine is now ready for a short period. Your earth auger is cold. : Now start the engine. 427BA009 KN BT 121 17 the auger must not rotate when the engine is correctly adjusted - If the engine does not start : : Push the slide control ...the starting throttle position - pull the starter rope briskly - 10 to position B. English / USA : Stand the unit on the tip of the auger. : Disengage the auger brake by moving the activating lever to 20 pulls may be necessary. warm up As soon as the engine runs: : Blip the throttle trigger...
.... : Pull the starter rope several times to e even if the engine is now ready for a short period. Your earth auger is cold. : Now start the engine. 427BA009 KN BT 121 17 the auger must not rotate when the engine is correctly adjusted - If the engine does not start : : Push the slide control ...the starting throttle position - pull the starter rope briskly - 10 to position B. English / USA : Stand the unit on the tip of the auger. : Disengage the auger brake by moving the activating lever to 20 pulls may be necessary. warm up As soon as the engine runs: : Blip the throttle trigger...
Instruction Manual
Page 30
... spur gear drive Gear ratio 47.5 : 1 Max. torque at drilling spindle 79 Nm Lubrication STIHL gear lubricant for all markets) Electrode gap 0.02 in (0.5 mm) Spark plug thread M 14... mm) long Drilling Tools (Augers) Earth augers 1.6, 2.4, 3.5, 4.7, 5.9, 7.9 in diameter (40, 60, 90, 120, 150, 200 mm), 27.4 in (695 mm) long Planting hole auger 10.2 in (260 mm) Planting auger 6 in (150 mm) ...diameter, 20.6 in (525 mm) long Special Accessories Shaft extension 17.7 in (450 mm) long Chuck For drill diameters from 5/64" to 1/2" (2 to 13 mm) BT 121...
... spur gear drive Gear ratio 47.5 : 1 Max. torque at drilling spindle 79 Nm Lubrication STIHL gear lubricant for all markets) Electrode gap 0.02 in (0.5 mm) Spark plug thread M 14... mm) long Drilling Tools (Augers) Earth augers 1.6, 2.4, 3.5, 4.7, 5.9, 7.9 in diameter (40, 60, 90, 120, 150, 200 mm), 27.4 in (695 mm) long Planting hole auger 10.2 in (260 mm) Planting auger 6 in (150 mm) ...diameter, 20.6 in (525 mm) long Special Accessories Shaft extension 17.7 in (450 mm) long Chuck For drill diameters from 5/64" to 1/2" (2 to 13 mm) BT 121...