Stihl GS 461 User Manual

1GS 461
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© ANDREAS STIHL AG & Co. KG, 2012
RA_761_00_01_01
1. Introduction and
safety precautions 2
1.1 Introduction 2
1.2 Safety precautions 3
2. Specifications 4
2.1 Engine 4
2.2 Fuel system 4
2.3 Ignition system 4
2.4 Tightening torques 5
3. Troubleshooting 7
3.1 Clutch 7
3.2 Chain Drive, Chain
Tensioner 8
3.3 Water system 9
3.4 Starter 10
3.5 Ignition system 11
3.6 Carburetor 12
3.7 Engine 15
4. Clutch 16
4.1 Clutch drum 16
4.2 Clutch 16
4.3 Pin / hand guard 18
4.4 Chain tensioner 19
4.5 Cut-off chain 20
4.6 Bar mounting studs 21
4.7 Collar nuts for chain
sprocket cover 21
5. Engine 22
5.1 Muffler 22
5.2 Leak testing 23
5.2.1 Preparations 23
5.2.2 Testing with
negative pressure 24
5.2.3 Pressure test 25
5.3 Oil seal on
ignition side 25
5.3.1 Oil seals on
clutch side 26
5.4 Shroud 27
5.5 Cylinder 28
5.6 Crankshaft 30
5.6.1 Ball bearing /
crankcase 34
5.7 Piston 35
5.8 Piston rings 37
5.9 Decompression valve 37
6. Ignition system 38
6.1 Ignition timing 38
6.2 Ignition module 38
6.3 Testing the ignition
module 40
6.3.1 Testing the ignition
module with engine
analyzer MDG 1 40
6.4 Spark plug boot /
ignition lead 41
6.5 Flywheel 42
6.6 Wiring harness 43
6.6.1 Testing 43
6.6.2 Ground wire 43
6.6.3 Wiring harness
Removal and
installation 43
6.6.4 Contact spring 46
6.7 Troubleshooting,
ignition system 48
7. Starter 51
7.1 General 51
7.2 Starter
Removal and
installation 51
7.3 Pawls 51
7.4 Rope rotor 52
7.5 Starter rope / starter
grip 52
7.6 Tensioning the
rewind spring 53
7.7 Replacing the
rewind spring 53
8. Antivibration
elements 55
8.1 Ring buffer fuel tank /
clutch side 55
8.1.1 Ring buffer fuel tank /
ignition side 55
8.1.2 Ring buffer guard /
clutch side 56
8.1.3 Ring buffer guard /
ignition side 57
8.1.4 Stop buffer on clutch
side 58
8.1.5 Stop buffer on ignition
side 58
8.2 Handlebar 58
8.3 Guard 59
8.4 Rubber buffers /
support 60
8.4.1 Water hose 60
8.4.2 Shut-off cock 61
8.4.3 Support 61
9. Actuating levers 63
9.1 Master Control lever 63
9.1.1 Removal and
installation 63
9.2 Throttle trigger /
trigger interlock 64
9.3 Throttle rod 65
10. Fuel system 67
10.1 Air filter 67
10.2 Filter base 67
10.3 Carburetor 67
10.3.1 Leakage test 69
10.4 Repairing
the carburetor 69
10.4.1 Metering diaphragm 69
10.4.2 Inlet needle 70
10.4.3 Pump diaphragm 71
10.4.4
Adjusting screws 72
10.5 Carburetor adjustment 74
10.5.1 Basic setting 74
10.5.2 Adjustment 74
10.5.3 Standard setting 75
10.6 Intake elbow 76
10.6.1 Impulse hose 77
10.7 Tank vent 78
10.7.1 Testing 78
10.7.2 Removal and
installation 78
10.8 Fuel intake 79
10.8.1 Pickup body 79
10.8.2 Fuel hose 79
10.8.3 Tank housing 80
11. Special tools 83
12. Service accessories 85
Contents

Stihl GS 461 Specifications

General

Brand	Stihl
Model	GS 461
Category	Chainsaw
Language	English