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Cutting Logs Under Tension

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7 Proper Techniques for Basic Bucking, Limbing, Pruning and Felling English into your lower body and legs as the bar/ chain exits the cut. When bucking: 0000-GXX-4567-A0 0000-GXX-2949-A1 WARNING ■ Be aware of rolling logs. Rolling logs can cause serious or fatal personal injury. To pre‐ vent a log from rolling while bucking: - Make sure the log is secure and will not roll downhill before starting your cut. If necessary, use sturdy wedges, shims or chocks. - If on a slope, always stand on the uphill side of the log. - Never stand on the log. ■ To reduce the risk of kickback caused by con‐ tacting the nose of the guide bar with other logs or limbs: - Cut only one log at a time. - Do not cut logs in a pile. ■ When cutting splintered wood, sharp slivers of wood may be caught and flung in the direction of the operator of the saw or bystanders. - Use caution when cutting splintered wood and always wear appropriate apparel and personal protective equipment, including eye protection. - Keep bystanders out of the work area. ■ When cutting smaller logs, make sure the log is properly supported to reduce the risk of per‐ sonal injury from loss of control of the chain saw or movement of the log. Small logs can move when contacted by the teeth of the chain: - Place logs through "V-shaped" supports on top of a sawhorse whenever possible. - Never permit another person to hold the log. - Never stabilize the log with your leg or foot. ■ Failing to control the saw at the bottom of a bucking cut can cause severe personal injury or death. - Prepare the saw to exit the bottom of the cut by reducing the feed force you exert on the saw. - Cushion the weight of the saw so that the bar and chain are not thrust downward 0458-200-8621-A ► Position the bumper spike of the saw against the log and use it as a fulcrum. ► Continually reposition the bumper spike while pushing the guide bar completely through the log. 7.2 Cutting Logs Under Tension 1 2 2 1 0000-GXX-1245-A0 WARNING ■ There is an increased danger of pinching the chain saw when cutting logs under tension. The tension in wood can also release sud‐ denly and with great force, propelling the log, limb or chain saw into the saw operator, caus‐ ing injury or loss of control. ■ To reduce the risk of severe or fatal personal injury from reactive forces, including kickback, or loss of control when cutting wood under tension: - Always start with a relieving cut (1) at the compression side of the log, and then make a bucking cut (2) at the tension side. - If a pinch occurs that traps the bar/chain, shut off the engine and activate the chain brake before attempting to remove the saw from the log, exercising caution that the limb does not suddenly snap or release. ■ Working in areas where logs, limbs and roots are tangled is extremely dangerous. - Drag the logs, limbs and other material to be cut into a clear area before cutting. Pull 19

Section	Page
STIHL MS 162, 172	1
1 Introduction	2
2 Guide to Using this Manual	2
2.1 Signal Words	2
2.2 Symbols in Text	2
3 Main Parts	3
3.1 Chain Saw	3
3.2 Optional Features	4
4 Safety Symbols on the Product	4
4.1 Chain Saw	4
5 IMPORTANT SAFETY INSTRUCTIONS	4
5.1 Intended Use	4
5.2 Operator	4
5.3 Personal Protective Equipment	5
5.4 Chain Saw	6
5.5 Fueling Instructions	7
5.6 Using the Chain Saw	9
6 Kickback and Other Reactive Forces	14
6.1 Reactive Forces	14
6.2 Kickback	14
6.3 Pull-in	18
6.4 Pushback	18
7 Proper Techniques for Basic Bucking, Limbing, Pruning and Felling	18
7.1 Bucking	18
7.2 Cutting Logs Under Tension	19
7.3 Limbing	20
7.4 Pruning	20
7.5 Felling	21
8 Maintenance, Repair and Storage	24
8.1 Warnings and Instructions	24
9 Before Starting Work	25
9.1 Preparing the Chain Saw for Operation	25
10 Assembling the Chain Saw	25
10.1 Cutting Attachment	25
10.2 Mounting and Removing the Guide Bar and Chain	25
10.3 Tensioning the Saw Chain	28
11 Lubricating the Saw Chain and Guide Bar	29
11.1 Bar and Chain Lubricant	29
11.2 Filling the Chain Oil Tank	29
12 The Chain Brake	30
12.1 Engaging the Chain Brake	30
12.2 Disengaging the Chain Brake	30
12.3 Maintaining the Chain Brake	30
13 Mixing Fuel and Refueling the Chain Saw	31
13.1 Mixing Fuel	31
13.2 Refueling the Chain Saw	32
14 Starting the Engine	33
14.1 Holding the Chain Saw	33
14.2 Starting Procedure	33
14.3 Pre-Starting Procedure	33
14.4 Starting the Engine	34
15 Shutting Off the Engine	34
15.1 Shutting Off the Engine	34
16 Checking the Chain Saw	35
16.1 Checking the Operation of the Chain Brake	35
16.2 Testing the Controls	35
16.3 Testing Chain Lubrication	35
17 After Finishing Work	36
17.1 Preparing for Transportation or Storage	36
18 Transporting	36
18.1 Transporting the Chain Saw	36
19 Storing	36
19.1 Storing the Chain Saw	36
20 Cleaning	37
20.1 Cleaning the Chain Saw	37
20.2 Cleaning the Guide Bar and Saw Chain	37
20.3 Cleaning the Air Filter	37
20.4 Cleaning the Spark Plug	38
21 Inspection and Maintenance	39
21.1 Inspection and Maintenance Chart	39
21.2 Inspecting and Maintaining the Chain Saw	40
21.3 Inspecting and Maintaining the Chain Sprocket	40
21.4 Inspecting and Maintaining the Guide Bar	40
21.5 Inspecting, Maintaining and Sharpening the Saw Chain	41
22 Troubleshooting Guide	43
22.1 Chain saw	43
22.2 Adjusting Idle Speed	44
22.3 Clearing the Combustion Chamber	44
23 Specifications	45
23.1 EPA	45
23.2 STIHL MS 162, 172	45
23.3 Chain Sprockets	45
23.4 Minimum Groove Depth of Guide Bars	45
23.5 Depth Gauge Setting	45
23.6 Symbols on the Chain Saw	45
23.7 Engineering Improvements	46
24 Combinations of Guide Bars and Saw Chains	46
24.1 STIHL MS 162, MS 172	46
25 Replacement Parts and Equipment	48
25.1 Genuine STIHL Replacement Parts	48
26 Disposal	48
26.1 Disposal of the Power Tool	48
27 Limited Warranty	48
27.1 STIHL Incorporated Limited Warranty Policy	48
28 Emission Control Warranty	48
28.1 STIHL Incorporated Federal Emission Control Warranty Statement	48
29 Trademarks	50
29.1 Registered Trademarks	50
29.2 Common Law Trademarks	50
30 Addresses	50
30.1 STIHL Incorporated	50
1 Introducción	51
2 Acerca de este manual de instrucciones	51
2.1 Palabras identificadoras	51
2.2 Símbolos en el texto	51
3 Componentes importantes	52
3.1 Motosierra	52
3.2 Características opcionales	53
4 Símbolos de seguridad en el producto	53
4.1 Motosierra	53
5 INSTRUCCIONES IMPORTANTES DE SEGURIDAD	53
5.1 Uso previsto	53
5.2 Operador	54
5.3 Equipos de protección personal	54
5.4 Motosierra	55
5.5 Instrucciones para el llenado de combustible	56
5.6 Uso de la motosierra	59
6 Contragolpe y otras fuerzas reactivas	65
6.1 Fuerzas reactivas	65
6.2 Contragolpe	65
6.3 Tirones	69
6.4 Rechazo	69
7 Técnicas adecuadas para el tronzado, el desramado, la poda y la tala básicos	70
7.1 Tronzado	70
7.2 Corte de troncos bajo tensión	71
7.3 Desrame	71
7.4 Poda	72
7.5 Tala	72
8 Mantenimiento, reparación y almacenamiento	76
8.1 Advertencias e instrucciones	76
9 Antes de empezar a trabajar	77
9.1 Preparación de la motosierra para el funcionamiento	77
10 Armado de la motosierra	77
10.1 Accesorio de corte	77
10.2 Montaje y retiro de la espada y la cadena de aserrado	77
10.3 Tensado de la cadena de sierra	80
11 Lubricación de la cadena de aserrado y de la espada	81
11.1 Lubricante de espadas y cadenas	81
11.2 Llenado del depósito de aceite de la cadena	81
12 El freno de cadena	82
12.1 Accionamiento del freno de la cadena	82
12.2 Cómo soltar el freno de la cadena	83
12.3 Mantenimiento del freno de la cadena	83
13 Mezcla del combustible y carga de combustible en la motosierra	83
13.1 Mezcla del combustible	83
13.2 Recarga de combustible de la motosierra	85
14 Arranque del motor	86
14.1 Sujeción de la motosierra	86
14.2 Procedimiento de arranque	86
14.3 Procedimiento de prearranque	87
14.4 Arranque del motor	87
15 Apagado del motor	88
15.1 Apagado del motor	88
16 Revisión de la motosierra	88
16.1 Control del funcionamiento del freno de la cadena	88
16.2 Prueba de los controles	88
16.3 Prueba de la lubricación de la cadena	89
17 Después de completar el trabajo	89
17.1 Preparación para el transporte o el almacenamiento	89
18 Transporte	89
18.1 Transporte de la motosierra	89
19 Almacenamiento	90
19.1 Almacenamiento de la motosierra	90
20 Limpieza	90
20.1 Limpieza de la motosierra	90
20.2 Limpieza de la barra guía y la cadena de sierra	91
20.3 Limpieza del filtro de aire	91
20.4 Limpieza de la bujía	92
21 Inspección y mantenimiento	93
21.1 Tabla de inspección y mantenimiento	93
21.2 Inspección y mantenimiento de la motosierra	94
21.3 Inspección y mantenimiento del piñón de la cadena	94
21.4 Inspección y mantenimiento de la espada	94
21.5 Inspección, mantenimiento y afilado de la cadena de aserrado	95
22 Guía de solución de problemas	97
22.1 Motosierra	97
22.2 Ajuste de la velocidad de marcha en vacío	98
22.3 Desobstrucción de la cámara de combustión	99
23 Especificaciones	99
23.1 E.P.A.	99
23.2 STIHL MS 162, 172	99
23.3 Piñones de la cadena	100
23.4 Profundidad mínima de ranura de las barras guía	100
23.5 Ajuste del calibrador de profundidad	100
23.6 Símbolos en la motosierra	100
23.7 Mejoramientos técnicos	100
24 Combinaciones de espadas y cadenas de aserrado	101
24.1 STIHL MS 162, MS 172	101
25 Piezas y equipos de repuesto	102
25.1 Piezas de repuesto originales de STIHL	102
26 Eliminación	102
26.1 Desecho de la herramienta motorizada	102
27 Garantía limitada	103
27.1 Política de garantía limitada de STIHL Incorporated	103
28 Garantía del sistema de control de emisiones	103
28.1 Declaración de garantía de STIHL Incorporated sobre sistemas de control de emisiones según normas federales	103
29 Marcas comerciales	105
29.1 Marcas comerciales registradas	105
29.2 Marcas comerciales por ley común	105
30 Direcciones	105

Match case Limit results 1 per page

0000-GXX-4567-A0

WARNING

■

Be aware of rolling logs. Rolling logs can

cause serious or fatal personal injury. To pre‐

vent a log from rolling while bucking:

–

Make sure the log is secure and will not

roll downhill before starting your cut. If

necessary, use sturdy wedges, shims or

chocks.

–

If on a slope, always stand on the uphill

side of the log.

–

Never stand on the log.

■

To reduce the risk of kickback caused by con‐

tacting the nose of the guide bar with other

logs or limbs:

–

Cut only one log at a time.

–

Do not cut logs in a pile.

■

When cutting splintered wood, sharp slivers of

wood may be caught and flung in the direction

of the operator of the saw or bystanders.

–

Use caution when cutting splintered wood

and always wear appropriate apparel and

personal protective equipment, including

eye protection.

–

Keep bystanders out of the work area.

■

When cutting smaller logs, make sure the log

is properly supported to reduce the risk of per‐

sonal injury from loss of control of the chain

saw or movement of the log. Small logs can

move when contacted by the teeth of the

chain:

–

Place logs through "V-shaped" supports

on top of a sawhorse whenever possible.

–

Never permit another person to hold the

log.

–

Never stabilize the log with your leg or

foot.

■

Failing to control the saw at the bottom of a

bucking cut can cause severe personal injury

or death.

–

Prepare the saw to exit the bottom of the

cut by reducing the feed force you exert

on the saw.

–

Cushion the weight of the saw so that the

bar and chain are not thrust downward

into your lower body and legs as the bar/

chain exits the cut.

When bucking:

0000-GXX-2949-A1

►

Position the bumper spike of the saw against

the log and use it as a fulcrum.

►

Continually reposition the bumper spike while

pushing the guide bar completely through the

log.

7.2

Cutting Logs Under Tension

0000-GXX-1245-A0

WARNING

■

There is an increased danger of pinching the

chain saw when cutting logs under tension.

The tension in wood can also release sud‐

denly and with great force, propelling the log,

limb or chain saw into the saw operator, caus‐

ing injury or loss of control.

■

To reduce the risk of severe or fatal personal

injury from reactive forces, including kickback,

or loss of control when cutting wood under

tension:

–

Always start with a relieving cut (1) at the

compression side of the log, and then

make a bucking cut (2) at the tension

side.

–

If a pinch occurs that traps the bar/chain,

shut off the engine and activate the chain

brake before attempting to remove the

saw from the log, exercising caution that

the limb does not suddenly snap or

release.

■

Working in areas where logs, limbs and roots

are tangled is extremely dangerous.

–

Drag the logs, limbs and other material to

be cut into a clear area before cutting. Pull

7 Proper Techniques for Basic Bucking, Limbing, Pruning and Felling

English

0458-200-8621-A