The STIHL fuel filling system enables you to easily refuel your STIHL power tools without spilling fuel. Simply screw the filling system onto the canister and dock it to the tank opening. With the filling system screwed on, you can place the canister upside down on the power tool’s tank and the petrol will only flow when the connection is pushed down from above. When the tank is full, the system stops automatically so that no fuel overflows.The STIHL fuel filling system can be used by professionals and domestic users in conjunction with all STIHL combination canisters, STIHL petrol canisters and the MotoMix 5-litre canister. It fits all tank openings with a diameter of more than 23.5 mm.