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Stihl Chain Saws 021 023 025 service manual and 021, 023, 024 025 Parts Spare Parts List

Stihl Chain Saws 021 023 025 service manual and 021, 023, 024 025 Parts Spare Parts List

Stihl 021 023 025 Chain Saws & Parts Workshop Service Repair Manual

This Stihl service manual contains detailed descriptions of all the repair and servicing procedures specific to this power tool series. There are separate handbooks for servicing procedures for standardized parts and assemblies that are installed in several STIHL power tool models. Reference is made to these handbooks in the appropriate chapters in this manual. As the design concept of model 021, 023 and 025 chainsaws is almost identical, the descriptions and servicing procedures in this manual generally apply to all three models. Differences are described in detail.

021-023-025 Service Manual

This Service Repair Manual Covers:

CONTENTS 1
1. SAFETY PRECAUTIONS 1
2. INTRODUCTION 2
3. SPECIFICATIONS 3
3.1 Engine 3
3.2 Fuel System 3
3.3 Ignition System 4
3.4 Cutting Attachment 4
3.5 Special Accessories 4
3.5.1 For User 4
3.5.2 For Service 4
3.6 Tightening Torques 5
4. CLUTCH, CHAINDRIVE, CHAINBRAKE, CHAINTENSIONER 6
4.1 Clutch Drum/Chain Sprocket 6
4.2 Chain Catcher 7
4.3 Clutch 7
4.4 Chain Brake 8
4.4.1 Checking Function 8
4.4.2 Disassembly 8
4.4.3 Assembly 10
4.5 Front Chain Tensioner 12
4.6 Side Chain Tensioner 12
5. ENGINE 13
5.1 Exhaust Muffler/Spark Arresting Screen 13
5.2 Leakage Test 14
5.2.1 Preparations 14
5.2.2 Pressure Test 15
5.2.3 Vacuum Test 15
5.3 Oil Seals 16
5.4 Removing and Installing 18
5.5 Cylinder 18
5.6 Piston 20
5.7 Piston Rings 22
5.8 Crankshaft 22
5.9 Connecting Rod( 021 up to Serial No. X 34 944 402) 23
5.10 Decompression Valve 24
6. IGNITIONSYSTEM 24
6.1 Spark Plug Boot 24
6.2 Ignition Lead 25
6.3 Ignition Module 25
6.3.1 Ignition Timing 26
6.3.2 Removing and Installing 26
6.4 Flywheel 27
7. REWIND STARTER 28
7.1 Routine Maintenance 28
7.2 Rewind Spring 28
7.2.1 Replacing 28
7.2.2 Tensioning 29
8. AV HANDLE SYSTEM/HANDLE HOUSING 30
8.1 Annular Buffers 30
8.2 Front Handle 31
8.3 Handle Housing 31
8.4 Switch Shaft 33
8.5 Contact Spring 34
8.6 Throttle Trigger/Interlock Lever 34
9. CHAIN LUBRICATION 36
9.1 Pickup Body 36
9.2 Connector/Suction Hose 36
9.3 Vent Valve 37
9.4 Worm 38
9.5 Oil Pump 38
10. FUEL SYSTEM 39
10.1 Air Filter 39
10.2 Carburetor 41
10.2.1 Leakage Test 41
10.2.2 Removing and Installing 42
10.2.3 Adjustment (except 023 L and USA) 43
10.2.4 Adjustment (023 L and USA) 44
10.3 Tank Vent 45
10.4 Pickup Body 46
10.5 Suction Hose 46
10.6 Manual Fuel Pump 47
10.6.1 Fuel Hoses 47
10.7 Fuel Tank 48
11. Special Servicing Tools and Aids 50
11.1 Special Servicing Tools 50
11.2 Servicing Aids 52
021 – 1123 53
024 – 1121 111
025 – 1123 159

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File Format: PDF
Compatible: All Versions of Windows & Mac
Language: English

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