Hey there ,
Could you post some pic's of your mower please , Victa made so many models and the name may be different to what the vsx 160 is in Australia..
anyway it sounds like you have a victa power torque engine made from 1980's - present
normally when a simple carburetor clean/rebuild fails it normally means the o-ring under the pull starter has failed it can also cause the engine to over rev and not idol
remove the plastic cowl off the top of the engine remove the 3 bolts and remove the starter. (starter is the top of the crankcase)
replace the o-ring with a genuine victa part . and this should fix your issue.
cheers, tomo
