Operating Instructions; During Operation; After Finishing Work - Stihl BT 121 Manual De Instrucciones

English / USA
Throttle cable adjustment
: Check adjustment of throttle cable –
see chapter on "Adjusting the
Throttle Cable".
If tank has been run completely dry
and then refilled:
: Press the fuel pump bulb at least
fives times.
: Now start the engine.
18

Operating Instructions

During Break-in Period
A factory new machine should not be run
at high revs (full throttle off load) for the
first three tank fillings. This avoids
unnecessary high loads during the
break-in period. As all moving parts
have to bed in during the break-in
period, the frictional resistances in the
engine are greater during this period.
The engine develops its maximum
power after about 5 to 15 tank fillings.

During Operation

After a long period of full-throttle
operation, allow engine to run for a while
at idle speed so that the heat in the
engine can be dissipated by the flow of
cooling air. This protects engine-
mounted components (ignition,
carburetor) from thermal overload.

After Finishing Work

Wait for the engine to cool down. Drain
the fuel Kraftstofftank and store the
machine in a dry place. Check the
tightness of all accessible screws and
nuts (not adjusting screws) at regular
regulars and retighten as necessary.
Working with Shaft Extension
(special accessory)
Do not fit the shaft extension until the full
length of the auger is in the hole.
Starting a hole with the shaft
extension fitted increases the risk of
personal injury because the unit is
then at chest height and cannot be
kept properly under control.
For the same reason the shaft
extension must be removed before
the auger is pulled out of the hole.
BT 121