MS 500i 17
12.1 Tools, Servicing Aids
– Screwdriver – 0000 890 2300 or equivalent
– Socket, T27x125 – 0812 542 2104 or equivalent
– Torque wrench – 5910 890 0302 or equivalent
– Screwdriver, T27x200 – 5910 890 2415 or equivalent
– STIHL multipurpose grease – 0781 120 1110
12.2 Removing the Chain Tensioner
N Preparations, @ 3.1.
N Remove the chain sprocket cover.
N Take out the screw (1).
N Remove the side plate (2).
N Turn spur gear (6) clockwise until the tensioner slide
(9) butts against the right end of the slot and exposes
the screw (4).
N Take out the screw (4).
N Pull out the spur gear (6) together with the cover plate
(5) and retainer (3).
N Pry the retainer (3) off the cover plate (5).
N Remove the cover plate (5) from the spur gear (6).
N Pull out the sealing ring (7).
N Pull out the tensioner slide (9) together with the
adjusting screw (8).
N Remove the thrust pad (10).
N Unscrew the adjusting screw (8) from the tensioner
slide (9).
12.3 Installing the Chain Tensioner
N Coat teeth of adjusting screw (8) with multipurpose
grease.
N Screw the adjusting screw (8) a few turns into the
tensioner slide (9).
N Fit the thrust pad (10) on the end of the adjusting
screw (8).
N Fit the tensioner slide (9) together with the adjusting
screw (8).
N Lubricate sealing ring (7) with multipurpose grease.
N Fit the sealing ring (7) in the recess in the spur gear
(6).
N Coat teeth of spur gear (6) with multipurpose grease.
N Slide the cover plate (5) onto the spur gear (6).
N Push the retainer (3) onto the spur gear (6).
N Fit the spur gear (6) together with the cover plate (5)
and retainer (3) in position.
N Insert and tighten down the screw (4).
N Place the side plate (2) in position.
N Insert and tighten down the screw (1).
N Fit the chain sprocket cover.
12 Chain Tensioner
10
9
8
3
2
5
6
7
M4x8 (2 Nm / 18 lbf. in.) 4
1
M4x8
(2 Nm /
18 lbf. in.)
0000-GXX-5575-A0
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