STIHL MS 270, 280 2005-10
R
A
_
U
1
_
0
0
_
0
0
.
f
m
S
e
i
t
e
0
D
o
n
n
e
r
s
t
a
g
,
2
.
M
ä
r
z
2
0
0
6
1
1
:
4
7
1
1
Schwarz Prozeß 45,0° 240,0 LPI
STIH)
1
MS 270, MS 280
q
© 2002 Andreas Stihl AG & Co., Waiblingen
Contents
1
Introduction
3
2
Safety Precautions
4
3
Specifications
5
3.1
Engine
5
3.2
Fuel System
5
3.3
Ignition System
5
3.4
Chain Lubrication
5
3.5
Tightening Torques
6
4
Troubleshooting
Chart
8
4.1
Clutch, Chain Drive,
Chain Brake, Chain
Tensioner
8
4.2
Rewind Starter
10
4.3
Chain Lubrication
11
4.4
Ignition System
12
4.5
Carburetor
13
4.6
Engine
16
5
Clutch, Chain Drive,
Chain Brake and
Chain Tensioner
17
5.1
Clutch Drum/Chain
Sprocket
17
5.2
Replacing the Chain
Catcher
18
5.3
Clutch
18
5.4
Chain Brake
20
5.4.1
Checking Operation
20
5.4.2
Removing
21
5.4.3
Installing
23
5.5
Chain Brake with
QuickStop Super
25
5.5.1
Removing
25
5.5.2
Installing
26
5.5.3
Checking Play
28
5.5.4
Adjusting Play
29
5.5.5
Brake Cable
29
5.5.6
Checking Operation
of Coasting Brake
30
5.6
Brake Spring Anchor
Pin
30
5.7
Chain Tensioner
31
5.8
Bar Mounting Studs
32
6
Engine
33
6.1
Muffler/Spark
Arresting Screen
33
6.2
Leakage Test
33
6.2.1
Preparations
33
6.2.2
Pressure Test
34
6.2.3
Vacuum Test
35
6.3
Oil Seals
36
6.4
Shroud
37
6.5
Cylinder and Piston
38
6.5.1
Removing
38
6.5.2
Installing
39
6.6
Piston Rings
42
6.7
Crankcase
43
6.7.1
Crankshaft
43
6.8
Decompression Valve 44
7
Ignition System
44
7.1
Ignition Module
45
7.1.1
Ignition Timing
45
7.1.2
Removing and
Installing
45
7.1.3
Testing the Ignition
Coil
46
7.2
Spark Plug Boot
48
7.3
Flywheel
48
7.4
Short Circuit Wire/
Ground Wire
49
7.5
Stop Contact
50
7.6
Ignition System
Troubleshooting
51
8
Rewind Starter
54
8.1
General
54
8.2
Fan Cover
54
8.3
Pawls
54
8.4
Rope Rotor
55
8.5
Starter Rope
56
8.5.1
ElastoStart
57
8.5.2
Tensioning
57
8.6
Starter Rope Guide
Bush
58
8.7
Replacing the Rewind
Spring
59
9
AV Handle System
60
9.1
Handlebar
60
9.2
Replacing Annular
Buffers
61
9.2.1
C