5TS 500i
Fuel system – barbed connectors
Pull or push the fuel hoses, by hand 
whenever possible, in the direction 
of the connector in order to ensure 
leakproofness of the fuel system.
Avoid damaging the barbed 
connectors 
– sharp-edged pliers, screwdrivers, 
etc., may not be used.
Also, do not cut open fuel hoses 
with a knife or similar aids.
Do not reuse fuel hoses after 
disassembly, but instead always 
replace them with new hoses 
– fuel hoses can be overstretched 
when being detached.
Mount new fuel hoses dry or using 
STIHL press fluid – apply press fluid 
to the ends of the hose and the 
connectors, b 13. 
Other press fluids are not permitted 
and may lead to fuel hose damage.