19KM 55
English / USA
: Unscrew and dry off the spark plug.
: Open the throttle wide.
: Crank the engine several times with 
the starter to clear the combustion 
chamber.
: Refit the spark plug and connect the 
spark plug boot – push it down 
firmly.
: Set the stop switch or slide control 
to I / # 
: Set choke lever to e, even if the 
engine is cold.
: Now start the engine.
Fuel tank run until dry
: After refueling, press the fuel pump 
bulb at least five times – even if bulb 
is filled with fuel.
: Adjust choke lever to suit engine 
temperature.
: Now start the engine.
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 flow of 
cooling air. This protects engine-
mounted components (ignition, 
carburetor) from thermal overload.
After finishing work
Wait for engine to cool down. Drain the 
fuel tank. Store the machine in a dry 
place. Check tightness of nuts and 
screws (not adjusting screws) at regular 
intervals and retighten as necessary.
Dirty air filters reduce engine power 
increase fuel consumption and make 
starting more difficult.
If there is a noticeable loss of engine 
power
: Set choke lever to g
: Press in the tab (1) and swing the 
filter cover (2) open.
: Clean away loose dirt from around 
the filter.
Operating Instructions Cleaning the Air Filter
232BA017 KN
1
2