English – 35
MAINTENANCE
”Air Injection” centrifugal cleaning
Centrifugal cleaning means the following: All air to the 
carburettor passes through the starter. Dirt and dust is 
centrifuged out by the cooling fan.
IMPORTANT! In order to maintain operation of the centrifugal 
cleaning system it must be regularly maintained. Clean the air 
intake to the starter, the fins on the flywheel, the space around 
the flywheel, inlet pipe and carburettor compartment.
Winter use
Running problems can occur when using the machine in the 
cold and snowy conditions caused by:
• Too low engine temperature.
• Icing of the air filter and carburettor.
Special measures are therefore often required:
• Partly mask the air inlet on the starter to increase the 
working temperature of the engine.
Temperature 0°°
°°
C or colder:
The cylinder cover is designed so it can be adjusted for 
running in cold weather. Twist the winter flap so that 
preheated air from the cylinder can pass into the carburettor 
space preventing icing of the air filter, etc.
For temperatures below -5°C and/or in snow conditions there 
is also:
• a special cover (A) for the starter housing
• a winter plug (B) for the air nozzle that is fitted as shown.
These reduce the flow of cooling air and prevent large 
amounts of snow from being sucked into the carburettor 
space.
CAUTION! When the winter plug is fitted the winter flap must 
be open!
H
IMPORTANT! If the temperature rises above -5°C or 0°C 
respectively the machine MUST be restored to its normal 
set-up. Otherwise there is a risk of overheating, which can 
cause severe engine damage.