OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Victa Two Stroke Engines Powertorques that won't start

MF the decomp valve will remain shut till after the motor stops spinning so that is not the cause.All that can cause it to kick back is timing slightly too far advanced (can't do much about that), compression too high, or blade carrier too light (not enough spinning mass to take it past the last compression stroke. No idea why apart from that. You could try making up a decompression plate to fit between a couple of head gaskets or you could try one of those heads that did not have a decomp valve in the head. If you look closely at those heads you can see the chamber is deeper to lower the compression a little