Instruction manual
FS 55, FS 55 C, FS 55 R, FS 55 RC
English
25
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 the engine to run for a 
short while at idle speed so that engine 
heat can be dissipated by the flow of 
cooling air. This protects engine-
mounted components (ignition, 
carburetor) from thermal overload.
After Finishing Work
Storing for a short period: Wait for the 
engine to cool down. Empty the fuel tank 
and keep the machine in a dry place, 
well away from sources of ignition, until 
you need it again. For longer out-of-
service perionds – see "Storing the 
Machine".
If there is a noticeable loss of engine 
power
N Set the choke lever to g.
N Press in the tab (1) and swing the 
filter cover (2) down. 
N Clean away loose dirt from around 
the filter.
N Remove the felt element (3) from 
the filter housing (4) and replace it – 
knock out or blow out as a 
temporary measure – do not wash.
N Replace damaged parts.
N Fit the felt element (3) in the filter 
housing (4).
N Close the filter cover so that it snaps 
into position.
Operating Instructions Cleaning the Air Filter
232BA017 KN
1
2
232BA018 KN
4
3










