About This Service Manual; Applicable Documentation; Symbols In Text; Safety During Repair Work - Stihl MS 500i Service Manual

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About this Service Manual

1.1

Applicable Documentation

Please observe the following documentation in
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addition to this service manual.
Spare parts documentation
–
TI bulletins
–
Instruction manual
–
1.2

Symbols in Text

This symbol refers to a chapter in this service
manual.
A video is available for this chapter
This symbol shows the tightening torque for a
5 Nm
screw joint and the procedure after tightening.
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In this example: Tightening torque 5 Nm. Then
rotate 1 full turn counterclockwise.
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Safety During Repair Work

2.1

Protective gloves

Sharp or hot components can cause cuts or burns.
If sharp or hot components have to be handled during
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a repair: Wear protective gloves.
2.2

Safety glasses

Particles and objects can be thrown into the air at high
speed during a repair. Thrown particles or objects can
cause eye injuries.
If there is a risk of particles being thrown during the
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repair: Wear safety glasses.
2.3

Replacement Parts

If replacement parts not approved by STIHL are installed,
they may not fulfill the required function or deactivate
safety devices. This can result in serious or fatal injuries.
STIHL recommends the use of genuine STIHL
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replacement parts.
MS 500i
2.4

Screws

Thread forming screws
Type P or DG screws form a permanent thread in the
material when installed for the first time. If the screw is not
re-installed in the existing thread, the security of the fixing
can no longer be guaranteed.
How to install type P or DG screws in an existing
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thread:
Place the screw in the hole.
–
Turn the screw counterclockwise until it drops down
–
slightly.
The screw engages the existing thread.
Tighten the screw to the specified torque.
–
Microencapsulated screws
The microencapsulation is only effective when the screw
is installed for the first time. If a microencapsulated screw
is re-used the screw joint may loosen in operation.
Replace the microencapsulated screw.
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If a microencapsulated screw is re-used, perform the
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following steps:
Clean tapped hole and screw thread.
–
Coat screw thread with Loctite 242.
–
Insert the screw and tighten it down to the specified
–
torque.
Aluminum screws
Do not re-use screws.
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Insert screws in a crosswise pattern as far as stop.
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Tighten down the screws in a crosswise pattern.
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Turn the screws another 90° in a crosswise pattern.
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Preparations for Repair

3.1

Preparations

Drain the fuel tank into a container approved for fuels.
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Remove the chain and guide bar.
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Clean the saw.
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