Stihl 4180 Series Service Manual

Series 4180 Powerhead 21
9.1 Tools, Servicing Aids
– Socket, T27x125 – 0812 542 2104
– Locking screw – 4282 890 2700
– Torque wrench – 5910 890 0302
– Torque wrench – 5910 890 0312
– Screwdriver, T27x200 – 5910 890 2415
9.2 Removing the Clutch
N Remove the shroud, @ 4.2.
N Remove the fan housing, @ 5.2
N Unscrew the spark plug.
N Fit the locking screw 4282 890 2700 (25) in the spark
plug hole.
N Turn the crankshaft counterclockwise until the piston
butts against the locking screw.
N Take out the screws (7).
N Remove the cover plate (6).
N Remove the clutch shoes (4, 5) together with the
spring (8) and other cover plate (1).
N If necessary, remove the washers (3) and sleeves (2).
9.3 Disassembling the Clutch
N Inspect the clutch drum in the fan housing for scores
and wear marks, and replace it if necessary.
N Twist the clutch shoes (4, 5) and unhook the spring
(8).
Clutch shoes must always be replaced in pairs.
9Clutch
1
2
3
4
5
6
2
3
8
7 M6x25 (12 Nm / 106 lbf. in.)
0000-GXX-2555-A0
25
0000-GXX-1966-A0

Stihl 4180 Series Specifications

General

Brand	Stihl
Model	4180 Series
Category	Engine
Language	English