OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Victa Two Stroke Engines Victa V50 125cc/160cc (unsure) Reving hard.

On your poppet valve you will notice 3 letters, A, B and C. They are there to assist you in positioning the poppet valve the correct way.
I have been taught that for all power torque engines the poppet valve must be set to 'C' next to the spray hole. Only exception is the Vortex engine it must be set to 'A'. If you set it to any other position it can apparently cause richer mixtures, lower governed speed and other abnormal conditions.
It's a victa powertorque engine, which yes, is a 160cc half crank motor.