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

Thank you Squizzy and Bigted for your responses.
Problem has been found and solved. Hopefully it will stay solved.
I can confirm that the above coils appear to have interchanged without a problem (on their behalf), so hope this may help someone else who has a coil issue on their machine.
Due to frustration yesterday, and constant issues rising to delay progress in getting the machine running again, I gave it up before going any further with testing thinking it may be an issue with the different coils installed, but that wasn't the case.
I never gave a thought to manually crossing the cut-off wires to see if that was the issue as I had purchased and installed a new rubber boot for the straight connection. I should've checked that it was fully fitted and the cross connection could contact the straight connection when throttle was moved to the Off Position. However, I did check to make sure the wires moved but, unknown to me at the time, the rubber boot wasn't fully pushed into the cam area of the carburettor so, although the wires moved when the throttle was placed in the Off position, the connection was blocked by the larger end of the boot and metal to rubber does not carry or disrupt current. Doh!
This morning, I checked the function manually, as Bigted suggested, and found the spark was cut-off when the wires were joined. Upon further investigation, I pushed the new rubber boot further into the cam area and verified that I could see through both holes for the cross lead to make proper contact.
This took several goes as the damn cam seemed to push the wire back out from inside the cam area and it lost the connection again. Painful having to remove the covers several times to fix again.
The only way to access these wires on the carburettor is to pull the top covers off and remove the carburettor for better access, which is a real pain.
I have provided some more photos of the existing coil and the mower in question.

Rear of coil MA05556A only has two connections, same as MA05599A

Not sure what the brass tab is, but the protrusion of the metal contact out of the coil is small compared to the MA05599A version.

View of the mower looking down over the top cover.

Too hard to get to the cut-off wiring without removing the top cover as it is way under the cover and fuel tank.


Appreciate all your help and advice.
Have a great weekend.
Daryl