Stihl SP 451 Instruction Manual page 6

English
– Slide control / stop switch must
move easily to STOP or 0.
– Smooth action of throttle trigger and
throttle trigger interlock – throttle
trigger must return automatically to
idle position.
– Check that the spark plug boot is
secure – a loose boot may cause
arcing that could ignite combustible
fumes and cause a fire.
– Keep the handles dry and clean –
free from oil and dirt – for safe
control of the power tool.
– Hook with rubber element: Properly
mounted and in good condition.
– Never attempt to modify the controls
or the safety devices in any way.
– Adjust the harness to suit your
height and reach – see "Fitting the
Harness".
To reduce the risk of personal injury,
do not operate your power tool if it is
damaged or not properly assembled.
For emergencies: Practise removing
and putting down the machine as you
would in an emergency. To avoid
damage, do not throw the machine to
the ground when practising – see also
"Fitting the Harness".
Starting the engine
Start the engine at least 3 meters from
the fueling spot, outdoors only.
Place the unit on firm ground in an open
area. Make sure you have good balance
and secure footing. Hold the unit
securely. The hook must be clear of the
4
ground and all other obstacles because
it may begin to run when the engine
starts.
Your harvester is a one-person unit. To
reduce the risk of injury from thrown
objects or contact with the shaft and
hook, do not allow other persons within
a radius of 10 meters of your own
position – even when starting.
Do not drop start the power tool – start
the engine as described in the
instruction manual.
Note that the hook continues to run for a
short period after you let go of the
throttle trigger (flywheel effect).
Make sure the idle speed setting is
correct. The hook must not move when
the engine is idling with the throttle
trigger released.
Check and correct the idle speed setting
at regular intervals. If the hook still
moves, have your dealer check your
machine and make proper adjustments
or repairs. STIHL recommends a STIHL
servicing dealer.
To reduce the risk of fire, keep hot
exhaust gases and hot muffler away
from easily combustible materials (e.g.
wood chips, bark, dry grass, fuel).
Holding and Controlling the Power
Tool
Always hold the unit on the right-hand
side of your body with both hands on the
handles.
Left hand on the front handle, right hand
on the control handle, even if you are
left-handed.
Make sure you always have good
balance and secure footing.
During Operation
Your power tool produces
toxic exhaust fumes as
soon as the engine is
running. These fumes
may be colorless and
odorless and contain
unburned hydrocarbons
and benzol. Never oper-
ate the power tool in
enclosed or poorly venti-
lated locations.
To reduce the risk of serious or fatal
injury from breathing toxic fumes,
ensure proper ventilation when working
in trenches, hollows or other confined
locations.
SP 451, SP 481