OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Victa Two Stroke Engines Difference between Victa coil MA05556A & MA05599A

Hi Team.
I'm currently trying to get a Victa Powertorque 160cc engine running (possibly a VS160 series 400 or Series 500 2-stroke) and, due to spark issues stemming from a missing spark plug end and boot, I have swapped out the old MA05556A coil with a MA005599A coil from another powertorque motor (obviously and older motor, but still an all-in-one block engine).
The replacement coil I installed was recovered from a seized engine I had picked up in our local bulky goods throw-out and is slightly different to the original, but I now have spark and the engine is running with this MA05599A coil.
The issue I now have is that I can't seem to get the throttle cut-out to work. I'm not sure if this relates to a compatibility issue with the coil, the Ignition Module, Condensor (maybe) or some other connection. I'll have another look in the morning at the cut-out assembly on the carbie, but I didn't touch connections at the ignition module end of the ignition system.
I have attached a photo of the old coil, but the replacement is already installed on the mower, so I am hoping someone may have an idea of any difference between the two coils that may affect proper operation of the mower.
The original coil appears to have a capacitor, or some other electrical component, built-in to coil itself.
Other differences where: -
. The original mounting bolt heads for the coil MA05556A were 11mm compared to 12mm on the MA05599A and smaller in thickness.
. Length the metal contacts protruded through the coil MA05556A are less than replacement MA05599A, but it fitted okay and gapped using a business card.
. Original wiring to the ignition module for this mower was utilised as the wiring from the replacement coil had already been removed.
I tried to use a screw-in type replacement spark plug boot (the orange one shown in the photo), but it didn't want to work. This was the second of this type I tried but, for some unknown reason, both failed to get spark through to the plug, yet there was definitely spark at the end of the lead. Trust me, I can guarantee power was getting to this point. :-)
Thanking you in advance.
Daryl