Husqvarna RZ19 CE / 966658901 Operator's Manual page 25

Move the steering controls outward to the locked
(outer) neutral position.
Move the throttle to the middle position.
If the engine is cold, the throttle control knob should
be pushed fully forward.
oPeRAtIon
Place controls in neutral position
Set the throttle
Choke control
8050-028
8050-008
8058-088
25