STIH)
STIHL MS 290, 310, 390
2004-11
1
MS 290, MS 310, MS 390
q
© ANDREAS STIHL AG & Co. KG, 2004
Contents
1.
Introduction
2
2.
Safety Precautions
3
3.
Specifications
4
3.1
Engine
4
3.1.1
Engine (USA only)
4
3.2
Fuel System
5
3.3
Ignition System
5
3.4
Chain Lubrication
5
3.5
Tightening Torques
6
4.
Troubleshooting
Chart
7
4.1
Clutch, Chain Drive,
Chain Brake,
Chain Tensioner
7
4.2
Rewind Starter
8
4.3
Chain Lubrication
9
4.4
Ignition System
10
4.5
Carburetor
11
4.6
Engine
13
5.
Clutch, Chain Drive,
Chain Brake and
Chain Tensioner
14
5.1
Clutch Drum/Chain
Sprocket
14
5.2
Chain Catcher
15
5.3
Spiked Bumper
15
5.4
Collar Stud
16
5.5
Clutch
16
5.6
Chain Brake
18
5.6.1
Checking Operation
18
5.6.2
Removing and
Installing
18
5.7
Replacing Pins
21
5.7.1
Removing
21
5.7.2
Installing
22
5.8
Chain Tensioner
23
6.
Engine
23
6.1
Muffler/Spark
Arresting Screen
23
6.2
Leakage Test
25
6.2.1
Preparations
25
6.2.2
Pressure Test
26
6.2.3
Vacuum Test
26
6.3
Oil Seals
27
6.4
Shroud
29
6.5
Removing and
Installing the Engine
30
6.5.1
Cylinder
31
6.5.2
Piston
33
6.6
Piston Rings
35
6.7
Crankshaft
35
7.
Ignition System
36
7.1
Ignition Module
37
7.1.1
Ignition Timing
37
7.1.2
Removing and
Installing
37
7.1.3
Testing the
Ignition Module
39
7.2
Spark Plug Boot
40
7.2.1
Ignition Lead
41
7.3
Flywheel
42
7.4
Contact Spring
43
7.5
Replacing Wiring
Harness
43
7.6
Ignition System
Troubleshooting
45
8.
Rewind Starter
48
8.1
General
48
8.2
Removing and
Installing
48
8.3
Pawl
48
8.4
Rope Rotor
49
8.5
Starter Rope/Grip
49
8.5.1
Tensioning
51
8.6
Starter Rope Guide
Bushing
52
8.7
Replacing Rewind
Spring
52
9.
AV Handle System/
Handle Housing
53
9.1
Front Handle
53
9.2
Handle Housing
54
9.3
Annular Buffers
56
9.3.1
Front Handle/
Handle Housing
56
9.3.2
Handle Housing/
Engine Housing
56
9.3.3
Front Handle/Engine
Housing
57
9.4
Switch Shaft
58
9.5
Throttle Trigger/
Interlock Lever
59
10.
Chain Lubr