Husqvarna RZ 016 Operator's Manual page 26

Open the fuel valve.
Press in and turn the ignition key to the start position
When the engine starts, immediately release the
ignition key back to the run position.
IMPORTANT INFORMATION
Do not run the starter for more than 5 seconds
each time. If the engine does not start, wait
approximately 10 seconds before retrying.
26 - HUSQVARNA
OPERAtION
Open the fuel valve
STOP
Turn to START position
STOP
Release ignition to the RUN position
8050-010
8050-135
8050-136