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Tensioning the Saw Chain

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English 10.3 Tensioning the Saw Chain 10.3.1 Tensioning the Chain WARNING ■ To reduce the risk of severe personal injury from chain derailment, check chain tension frequently, 5.6. At operating temperatures, the chain stretches and sags. New chain tends to stretch more than used chain. Tension the chain so that the drive links cannot come out of the groove on the underside of the guide bar. To properly tension the chain: ► Shut off the engine, 15.1. 1 a 2 ► Loosen the nut (1). ► Disengage the chain brake, 12.2. ► Lift the guide bar tip. ► Turn the side chain tensioner (2) clockwise to tighten the chain. The chain is properly adjusted when the dis‐ tance (a) between the underside of the guide bar and the chain is within 0.04 in. (1 mm) and 0.08 in. (2 mm) and can still be pulled easily along the bar by hand. Always wear gloves when handling the chain. ► If the chain cannot be moved along the guide bar, it is too tight. - Reduce the tension by turning the side chain tensioner counter-clockwise until the chain can move freely along the guide bar. - Ensure that the drive links remain in the groove and that the distance (a) between the underside of the guide bar and the chain is within 0.04 in. (1 mm) and 0.08 in. (2 mm). ► Once the chain is properly tensioned, lift the guide bar tip and tighten the nuts to secure the chain sprocket cover. ► Finally, ensure that the distance (a) between the underside of the guide bar and the chain is within 0.04 in. (1 mm) and 0.08 in. (2 mm). 0000097422_001 0000097423_001 10 Assembling the Chain Saw NOTICE ■ Always release tension on the chain after fin‐ ishing work. The chain contracts as it cools down. If it is not slackened, it can damage the drive shaft and bearings. Properly re-tension the chain before using the saw again. 10.3.2 Tensioning the Chain (Quick Chain Adjuster) WARNING ■ To reduce the risk of severe personal injury from chain derailment, check chain tension frequently, 5.6. At operating temperatures, the chain stretches and sags. New chain tends to stretch more than used chain. Tension the chain so that the drive links cannot come out of the groove on the underside of the guide bar. To properly tension the chain: ► Shut off the engine, 15.1. 2 a 1 ► Raise the handle of the wingnut (1). ► Turn the wingnut counterclockwise twice or until the chain is loose. ► Disengage the chain brake, 12.2. ► Lift the guide bar tip. ► Turn the adjusting wheel (2) clockwise to tighten the chain. The chain is properly adjusted when the dis‐ tance (a) between the underside of the guide bar and the chain is within 0.04 in. (1 mm) and 0.08 in. (2 mm) and can still be pulled easily along the bar by hand. Always wear gloves when handling the chain. 28 0458-200-8621-A

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

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10.3

Tensioning the Saw Chain

10.3.1

Tensioning the Chain

WARNING

■

To reduce the risk of severe personal injury

from chain derailment, check chain tension

frequently,

5.6. At operating temperatures,

the chain stretches and sags. New chain tends

to stretch more than used chain. Tension the

chain so that the drive links cannot come out

of the groove on the underside of the guide

bar.

To properly tension the chain:

►

Shut off the engine,

15.1.

0000097422_001

►

Loosen the nut (1).

►

Disengage the chain brake,

12.2.

►

Lift the guide bar tip.

►

Turn the side chain tensioner (2) clockwise to

tighten the chain.

The chain is properly adjusted when the dis‐

tance (a) between the underside of the guide

bar and the chain is within 0.04 in. (1 mm) and

0.08 in. (2 mm) and can still be pulled easily

along the bar by hand. Always wear gloves

when handling the chain.

►

If the chain cannot be moved along the guide

bar, it is too tight.

–

Reduce the tension by turning the side

chain tensioner counter-clockwise until the

chain can move freely along the guide bar.

–

Ensure that the drive links remain in the

groove and that the distance (a) between

the underside of the guide bar and the chain

is within 0.04 in. (1 mm) and 0.08 in.

(2 mm).

►

Once the chain is properly tensioned, lift the

guide bar tip and tighten the nuts to secure the

chain sprocket cover.

►

Finally, ensure that the distance (a) between

the underside of the guide bar and the chain is

within 0.04 in. (1 mm) and 0.08 in. (2 mm).

NOTICE

■

Always release tension on the chain after fin‐

ishing work. The chain contracts as it cools

down. If it is not slackened, it can damage the

drive shaft and bearings. Properly re-tension

the chain before using the saw again.

10.3.2

Tensioning the Chain (Quick Chain

Adjuster)