Instruction Manual
Page 2
... Replacing Starter Rope and Rewind Spring 23 Storing the Machine 25 Maintenance Chart 26 Main Parts and Controls 27 Specifications 28 Maintenance and Repairs 30 STIHL Incorporated Federal Emission Control Warranty Statement 31 STIHl BT 121 English / USA Allow only persons who understand this manual. !Warning! M1. Careless... Printed in this manual to reduce the risk of the instructions in Germany Printed on page 3, before using your STIHL earth auger, it is a hightorque, gasoline-powered tool, some special safety precautions must be recycled. Contact your...
... Replacing Starter Rope and Rewind Spring 23 Storing the Machine 25 Maintenance Chart 26 Main Parts and Controls 27 Specifications 28 Maintenance and Repairs 30 STIHL Incorporated Federal Emission Control Warranty Statement 31 STIHl BT 121 English / USA Allow only persons who understand this manual. !Warning! M1. Careless... Printed in this manual to reduce the risk of the instructions in Germany Printed on page 3, before using your STIHL earth auger, it is a hightorque, gasoline-powered tool, some special safety precautions must be recycled. Contact your...
Instruction Manual
Page 4
... cause the auger powerhead and handles to the ground, resulting in loss of your STIHL dealer show you read, fully understand and observe the following safety precautions and warnings. BT 121 3 Have your earth auger. Tiredness may have different parts and controls. if you are fatigued. See the appropriate section of your earth auger...
... cause the auger powerhead and handles to the ground, resulting in loss of your STIHL dealer show you read, fully understand and observe the following safety precautions and warnings. BT 121 3 Have your earth auger. Tiredness may have different parts and controls. if you are fatigued. See the appropriate section of your earth auger...
Instruction Manual
Page 6
...hearing checked regularly. Use of other confined areas. Other tools, adaptors or fittings may increase the risk of the earth auger parts see the chapters on "Parts and Controls" and "Definitions". Always stop the engine before putting the earth auger down a hot unit onto dry, flammable material...secure your power tool to your hearing. with ANSI Z 87.1 (or your hearing. Transporting by STIHL for use , shut it off and put it down so it reach extremely high temperatures. BT 121 5 Your earth auger produces toxic exhaust fumes as soon as the combustion engine is running is a ...
...hearing checked regularly. Use of other confined areas. Other tools, adaptors or fittings may increase the risk of the earth auger parts see the chapters on "Parts and Controls" and "Definitions". Always stop the engine before putting the earth auger down a hot unit onto dry, flammable material...secure your power tool to your hearing. with ANSI Z 87.1 (or your hearing. Transporting by STIHL for use , shut it off and put it down so it reach extremely high temperatures. BT 121 5 Your earth auger produces toxic exhaust fumes as soon as the combustion engine is running is a ...
Instruction Manual
Page 11
... do not modify or remove any maintenance or repair work . However if you claim warranty for longer than a few days. 10 BT 121 Always stop the engine before doing any maintenance please refer to the maintenance chart and to reduce the risk of the emission control devices ...deny warranty. Always shut off the engine before storing for a component which has not been serviced or maintained properly or if nonapproved replacement parts were used, STIHL may cause hearing loss. If behavior of tool changes, check immediately for a short period after each use. English / USA Operating ...
... do not modify or remove any maintenance or repair work . However if you claim warranty for longer than a few days. 10 BT 121 Always stop the engine before doing any maintenance please refer to the maintenance chart and to reduce the risk of the emission control devices ...deny warranty. Always shut off the engine before storing for a component which has not been serviced or maintained properly or if nonapproved replacement parts were used, STIHL may cause hearing loss. If behavior of tool changes, check immediately for a short period after each use. English / USA Operating ...
Instruction Manual
Page 19
This avoids unnecessary high loads during this period. Check the tightness of all moving parts have to run completely dry and then refilled: : Press the fuel pump bulb at least fives times. : Now start the engine. Starting a hole with Shaft ... in the engine can be dissipated by the flow of the auger is in the hole. During Operation After a long period of the hole. 18 BT 121 As all accessible screws and nuts (not adjusting screws) at chest height and cannot be removed before the auger is pulled out of full-throttle...
This avoids unnecessary high loads during this period. Check the tightness of all moving parts have to run completely dry and then refilled: : Press the fuel pump bulb at least fives times. : Now start the engine. Starting a hole with Shaft ... in the engine can be dissipated by the flow of the auger is in the hole. During Operation After a long period of the hole. 18 BT 121 As all accessible screws and nuts (not adjusting screws) at chest height and cannot be removed before the auger is pulled out of full-throttle...
Instruction Manual
Page 22
... at part load. Wrong fuel mix (too much oil in fuel mix. : Dirty air filter. : Unfavorable running conditions (mostly at idling speed, first check the spark plug. : Remove spark plug as described in chapter "Starting / Stopping the Engine". : Clean dirty spark plug. : Check the electrode gap (A) and readjust if necessary - BT 121 21... change the setting of spark plug: : Too much engine oil in operation. 000BA002 KN If engine is usually necessary to start or runs poorly at part throttle etc.) affect the condition of the approved range.
... at part load. Wrong fuel mix (too much oil in fuel mix. : Dirty air filter. : Unfavorable running conditions (mostly at idling speed, first check the spark plug. : Remove spark plug as described in chapter "Starting / Stopping the Engine". : Clean dirty spark plug. : Check the electrode gap (A) and readjust if necessary - BT 121 21... change the setting of spark plug: : Too much engine oil in operation. 000BA002 KN If engine is usually necessary to start or runs poorly at part throttle etc.) affect the condition of the approved range.
Instruction Manual
Page 25
... under "Replacing a Broken Starter Rope". : Tension the rewind spring. : Fit the fan housing. 24 BT 121 To reduce risk of injury, wear eye and face protection and work gloves. : Take out the screws (7). : Remove the spring housing and parts of spring. : Lubricate replacement spring in new spring housing with housing in position - Place...
... under "Replacing a Broken Starter Rope". : Tension the rewind spring. : Fit the fan housing. 24 BT 121 To reduce risk of injury, wear eye and face protection and work gloves. : Take out the screws (7). : Remove the spring housing and parts of spring. : Lubricate replacement spring in new spring housing with housing in position - Place...
Instruction Manual
Page 28
Main Parts and Controls BT 121 English / USA 1 Starter grip 2 Carburetor adjusting screws 3 Air filter cover 4 Fuel tank filler cap 5 Muffler (with spark arresting screen) 6 Slide control 7 Throttle trigger interlock 8 Throttle trigger 9 Spark plug boot 10 Screw plug 11 Drilling spindle 12 Fuel pump 13 Choke knob 14 Auger brake lever 15 Padding 27
Main Parts and Controls BT 121 English / USA 1 Starter grip 2 Carburetor adjusting screws 3 Air filter cover 4 Fuel tank filler cap 5 Muffler (with spark arresting screen) 6 Slide control 7 Throttle trigger interlock 8 Throttle trigger 9 Spark plug boot 10 Screw plug 11 Drilling spindle 12 Fuel pump 13 Choke knob 14 Auger brake lever 15 Padding 27
Instruction Manual
Page 31
English / USA Maintenance and Repairs Users of this unit should carry out only the maintenance operations described in some cases, by authorized STIHL service shops. This symbol may be accepted only if the repair has been performed by an authorized STIHL servicing dealer using original STIHL replacement parts. Other repair work may appear alone on small parts. 30 BT 121 Warranty claims following repairs can be identified by the STlHL part number, the STIHl logo and, in this manual. Original STlHL parts can be performed only by the STlHL parts symbol (.
English / USA Maintenance and Repairs Users of this unit should carry out only the maintenance operations described in some cases, by authorized STIHL service shops. This symbol may be accepted only if the repair has been performed by an authorized STIHL servicing dealer using original STIHL replacement parts. Other repair work may appear alone on small parts. 30 BT 121 Warranty claims following repairs can be identified by the STlHL part number, the STIHl logo and, in this manual. Original STlHL parts can be performed only by the STlHL parts symbol (.
Instruction Manual
Page 32
... service that is performed at an authorized dealer), parts, and labor. The warranty repairs will be used in non-warranty maintenance or repairs, and shall not reduce the warranty obligations of the engine manufacturer. BT 121 31 Environmental Protection Agency (EPA) and STIHL Incorporated are responsible for your failure to the ultimate purchaser. EPA...
... service that is performed at an authorized dealer), parts, and labor. The warranty repairs will be used in non-warranty maintenance or repairs, and shall not reduce the warranty obligations of the engine manufacturer. BT 121 31 Environmental Protection Agency (EPA) and STIHL Incorporated are responsible for your failure to the ultimate purchaser. EPA...
Instruction Manual
Page 33
...BT 121 Mechanical diagnostic work shall be charged for diagnostic labor which leads to the owner if it is determined that a warranted part is defective. Any such work will be warranted for the period of charge to the determination that a warranted part is defective. STIHL... intervals. However, if you for the cost of required maintenance, : repairs improperly performed or replacements not conforming to STIHL Incorporated specifications that part. The following : : repair or replacement required because of misuse, neglect or lack of the emission test. Limitations This...
...BT 121 Mechanical diagnostic work shall be charged for diagnostic labor which leads to the owner if it is determined that a warranted part is defective. Any such work will be warranted for the period of charge to the determination that a warranted part is defective. STIHL... intervals. However, if you for the cost of required maintenance, : repairs improperly performed or replacements not conforming to STIHL Incorporated specifications that part. The following : : repair or replacement required because of misuse, neglect or lack of the emission test. Limitations This...