Stihl MS 171 Manual page 2

Contents
1. Introduction
2. Safety Precautions
3. Specifications
3.1 Engine
3.2 Fuel System
3.3 Ignition System
3.4 Chain Lubrication
3.5 Tightening Torques
4. Troubleshooting
4.1 Clutch
4.2 Chain Drive,
Chain Brake,
Chain Tensioner
4.3 Chain Lubrication
4.4 Rewind Starter
4.5 Ignition System
4.6 Carburetor
4.7 Engine
5. Cutting Attachment
5.1 Chain Catcher
6. Clutch
6.1 Clutch Drum
7. Chain Brake
7.1 Checking Operation
7.2 Removing and
Installing
the Brake Band
7.3 Brake Lever
7.4 Flat Spring
7.5 Pins
7.6 Chain Tensioner
7.7 Bar Mounting Studs
MS 171, MS 181, MS 211
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3 8. Engine
8.1 Muffler / Spark
4 Arresting Screen
8.2 Leakage Test
8.2.1 Preparations
5 8.2.2 Vacuum Test
8.2.3 Pressure Test
5 8.3 Oil Seals
5 8.4 Removing and Installing
5 the Shroud
5 8.5 Removing and Installing
6 the Engine
8.6 Crankshaft
8.7 Ball Bearings/
8 Crankshaft
8.8 Piston
8 8.8.1 Piston Rings
9 9. Ignition System
10
11 9.1 Ignition Module
12 9.1.1 Removing and
14 Installing
17 9.2 Ignition Timing
9.3 Testing the Ignition
Module
18 9.4 Spark Plug Boot
9.5 Flywheel
18 9.6 Short Circuit Wire
9.6.1 Testing
9.6.2 Removing and
19 Installing
9.6.3 Ground Wire
21 9.6.4 Contact Spring
9.7 Ignition System
Troubleshooting
22
22 10. Rewind Starter
10.1 General
22 10.2 Removing and
24 Installing
26 10.3 Pawl
26 10.4 ErgoStart
27 10.5 Rope Rotor
27 10.6 Starter Rope / Grip
10.7 Tensioning
the Rewind Spring
10.8 Replacing
the Rewind Spring
28 11. Servicing
the AV System
28 11.1 AV Spring on Oil Tank 60
29 11.2 AV Spring on
29 Fuel Tank
30 11.3 AV Spring on
30 Cylinder
31 11.4 Handle Frame
32
12. Master Control Lever 64
33
34 12.1 Switch Shaft
12.1.1 Removing and
36 Installing
37 12.2 Throttle Trigger /
39 Interlock Lever
40 13. Chain Lubrication
40 13.1 Pickup Body
13.2 Oil Suction Hose
40 13.3 Removing and Installing
42 the Oil Pump
13.4 Valve
42 13.5 Oil Tank Cap
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© ANDREAS STIHL AG & Co. KG, 2007
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