Chain Tensioner; Tools, Servicing Aids; Removing The Chain Tensioner; Installing The Chain Tensioner - Stihl MS 500i Service Manual

12 Chain Tensioner

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

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
N
(9) butts against the right end of the slot and exposes
the screw (4).
Take out the screw (4).
N
Pull out the spur gear (6) together with the cover plate
N
(5) and retainer (3).
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
N
adjusting screw (8).
MS 500i
8
7
6
5
4
M4x8 (2 Nm / 18 lbf. in.)
3
Remove the thrust pad (10).
N
Unscrew the adjusting screw (8) from the tensioner
N
slide (9).
12.3

Installing the Chain Tensioner

Coat teeth of adjusting screw (8) with multipurpose
N
grease.
Screw the adjusting screw (8) a few turns into the
N
tensioner slide (9).
Fit the thrust pad (10) on the end of the adjusting
N
screw (8).
Fit the tensioner slide (9) together with the adjusting
N
screw (8).
Lubricate sealing ring (7) with multipurpose grease.
N
Fit the sealing ring (7) in the recess in the spur gear
N
(6).
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)
N
and retainer (3) in position.
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.
N
10
9
2
1
M4x8
(2 Nm /
18 lbf. in.)
17