GB
Only start the engine in a horizontal position, do
not use the engine in inclined positions with a
gradient of more than 15°.
■
Cold start problems may occur if the outside
temperature is low.
■
Warm start problems may occur if the outside
temperature is low due to evaporation in the
carburettor chamber or pump.
■
In either case the grade of oil must be adapt-
ed to the operating temperatures.
■
The maximum power of an internal combus-
tion engine progressively decreases with the
increase in altitude above sea level. Exces-
sive engine load and heavy work must there-
fore be avoided with increasing altitude.
Controlling the engine speed
The lawn tractor engine speed is set using the
throttle:
Increase speed.
Reduce speed.
Cold start and warm start
The choke must be engaged for a warm start and
disengaged once the engine is warm. The choke
does not need to be used for a warm start.
Choke on.
Choke off.
30
All manuals and user guides at all-guides.com
6 REPAIR
WARNING!
Risk of injury during re-
pair work
Improper repairs can lead
to serious injuries and
damage to the appliance.
■
Repair work may only
be carried out by AL-KO
service centres or au-
thorised specialist work-
shops.
■
Only original spare parts from AL-KO are al-
lowed.
7 MAINTENANCE AND CARE
WARNING!
Risk of injury
Inadvertent switching on of
the engine can lead to se-
rious injuries.
■
Before setting, mainte-
nance and repair work,
always switch off the
engine and secure
against being switched
on again.
1. Before all maintenance and cleaning work:
Remove (05/a) spark plug connector (05/1)
from the spark plug (05/2).
2. Perform the maintenance and cleaning work
described in this section according to the
maintenance schedule.
3. After maintenance and cleaning work: Reat-
tach (04/a) the spark plug connector(04/1) to
the spark plug (04/2).
Repair
PRO 350 | PRO 450