Stihl BT 131, Service Manual

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BT 131 2
Guide to Using this Service Manual
This service manual contains the necessary safety
information, exploded drawings and instructions for
diagnosis and repairs. The graphic elements used in this
manual have the following meanings:
Supplements to this service manual
Technical information bulletins supplement the service
manual until a revised edition is issued.
–
Always refer to the latest edition of the relevant parts
list for the part numbers of any replacement parts.
–
Use the part numbers to identify the tools in the
"STIHL Special Tools" manual.
–
None of these documents may be passed to third
parties.
Interactive video tutorial
Interactive video tutorials may be used for repair
procedures. They can be opened from the service
manual.
Your computer must meet the following requirements:
–
Active internet connection
–
HTML5 compatible internet browser
2.1 Protective Gloves
Sharp or hot components can cause cuts or burns.
N
If sharp or hot components have to be handled during
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.
N
If there is a risk of particles being thrown during the
repair: Wear safety glasses.
2.3 Spare Parts
If spare 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.
N
STIHL recommends the use of genuine STIHL
replacement parts.
3.1 Preparing the Machine
N
Remove the padding.
N
Drain the fuel tank into a container approved for fuels.
N
Remove auger.
N
Clean the machine.
1 Safe diagnosis and repairs
Action to be taken
Reference to another chapter, i.e. chapter 3 in
this example
Interactive video tutorial available for this
chapter
Tighten screw to torque specified, i.e. 3 Nm in
this example
Tighten screw to torque specified, i.e. 5 Nm in
this example; then back it off 1 turn
counterclockwise
2 Safety During Repair Work
3
3 Nm
5 Nm
1
3 Preparations for Repair