Operation Manual

5BR 420
English / USA
!Warning!
Proper eye protection is a must. Even
though the discharge is directed away
from the operator, ricochets and bounce
backs can occur during blower
operations.
Never operate a blower
unless wearing goggles
or properly fitted safety
glasses with adequate
top and side protection
which comply with
ANSI Z 87.1 (or your applicable national
standard).
Fellow workers must also wear personal
protective equipment.
!Warning!
Blower noise may damage your hearing.
Wear sound barriers (ear plugs or ear
mufflers) to help protect your hearing.
Continual and regular users should have
their hearing checked regulary.
THE BLOWER
For illustrations and definitions of the
blower parts see the chapter on "Parts
and Controls"!
!Warning!
Never modify a blower in any way. Only
attachments supplied by STIHL or
expressly approved by STIHL for use
with the specific STIHL blower models
are authorized. Although certain
unauthorized attachment are useable for
the STIHL blower, their use may be
extremely dangerous.
THE USE OF THE BLOWER
Transport
Always turn off the engine before taking
the machine off your back and putting it
down. When transporting your unit in a
vehicle, properly secure it to prevent
turnover, fuel spillage and damage to the
machine.
Adjust carrying harness to suit your size
before starting work.
!Warning!
Before starting work, always inspect the
rubber buffers which connect the engine
to the pack frame. If the buffers are torn
or damaged, they should be replaced by
your STIHL dealer. Failure of one or
more buffers may cause the engine or
fuel tank to hit or rub against other parts,
and may lead to serious injury from
increased vibrations or from fire as the
result of fuel leakage.
Fuel
This STIHL unit uses an oil-gasoline
mixture for fuel (see the chapter on
"Fuel" of your owner`s manual).