Wacker Neuson DPU 6555He Operator's Manual page 36

Operation
T01006GB.fm
5. Clean the area around the dosing device and then pull off the cover.
6. Fill the housing to the upper edge with low viscosity oil. Replace
cover and press down with force. Exactly two successive fillings are
required.
7. Turn the decompression lever all the way to „f".
8. Then start the engine immediately with the electric starter or by
using the safety start crank.
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