Clutch; Tools, Servicing Aids; Removing The Clutch; Disassembling The Clutch - Stihl 4180 Series Service Manual

9

Clutch

9.1

Tools, Servicing Aids

Socket, T27x125 – 0812 542 2104
–
Locking screw – 4282 890 2700
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Torque wrench – 5910 890 0302
–
Torque wrench – 5910 890 0312
–
Screwdriver, T27x200 – 5910 890 2415
–
9.2

Removing the Clutch

Remove the shroud, @ 4.2.
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Remove the fan housing, @ 5.2
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Unscrew the spark plug.
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Series 4180 Powerhead
1
2
2
3
3
4
5
8
25
Fit the locking screw 4282 890 2700 (25) in the spark
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plug hole.
Turn the crankshaft counterclockwise until the piston
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butts against the locking screw.
Take out the screws (7).
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Remove the cover plate (6).
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Remove the clutch shoes (4, 5) together with the
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spring (8) and other cover plate (1).
If necessary, remove the washers (3) and sleeves (2).
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9.3

Disassembling the Clutch

Inspect the clutch drum in the fan housing for scores
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and wear marks, and replace it if necessary.
Twist the clutch shoes (4, 5) and unhook the spring
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(8).
Clutch shoes must always be replaced in pairs.
6
7
M6x25 (12 Nm / 106 lbf. in.)
21