Thread-Cutting Screws; Micro-Encapsulated Screws; Aluminum Screws; Spare Parts - Stihl HSA 50.0 Service Manual

To avoid material damage to components, observe the
following points:
Touch electronic components only with ESD
–
protective equipment.
Use ESD table mat with wrist strap.
–
Ship defective electronic components only in ESD
–
bags.
3.3

Thread-cutting screws

Screws with the designation P or DG imprint a permanent
thread in the material when screwed in. If the screw no
longer engages in the thread when re-inserted, the
security of the screwed connection can no longer be
guaranteed.
How to install type P or DG screws in an existing
N
thread:
Place screw in the hole.
–
Turn screw counterclockwise until the screw sinks
–
slightly into the hole.
The screw engages the existing thread.
Turn screw clockwise, tighten with the prescribed
–
torque.
3.4

Micro-encapsulated screws

The micro-encapsulated pre-coating is only effective the
first time the screw is screwed in. If a micro-encapsulated
screw is reused, the screw connection may loosen during
operation.
Replace the microencapsulated screw.
N
If a micro-encapsulated screw is to be reused, carry
N
out the following steps:
Coat the thread of the screw with medium-strength
–
threadlocking adhesive (Loctite 243).
Screw in the screw, tighten with the prescribed
–
torque.
3.5

Aluminum screws

Do not re-use screws.
N
Screw in screws crosswise until the head contacts.
N
Tighten down the screws in a crosswise pattern.
N
Continue to turn the screws crosswise by 90°.
N
3.6

Spare parts

These symbols indicate original STIHL
spare parts and original STIHL
accessories.
HSA 50.0, 50.1
STIHL recommends the use of original STIHL spare parts
and accessories.
Despite ongoing market observation, STIHL is unable to
judge the reliability, safety and suitability of other
manufacturers' spare parts and accessories; accordingly,
STIHL cannot warrant for the use of those parts.
Original STIHL spare parts and original STIHL
accessories are available from STIHL authorized dealers.
If a set consisting of several spare parts is used, all parts
of the delivery must be installed and used to warrant the
proper functioning and safety of the device.
3