what is the air gap for the magneto?

loosen coil and put a piece of card between the magnet and the pick up,
approx 0.6 mm re tighten.
this will get you going.

cg
June 2020

https://www.mcculloch.com/uk/customer-support/contact-us/

Rheek
June 2019

Manual for McCulloch Electrolux Virginia MH542 are here (useful but doesn't answer your question):

https://www.manualslib.com/manual/539606/Mcculloch-Virginia-Mh542-Mh555.html

Based on the spark coil picture here, the gap doesn't look adjustable. Please note: you'll need to copy and paste this next link BUT you'll also need to remove the spaces in the bit before ".co.uk". For some reason the owner of this site blocks some addresses and/or certain words.

https://www.r a n s o mspares.co.uk/parts/brands/mcculloch/hedge-trimmers/virginia mh 542%2C virginia mh 555%2C prefix 12 (24801400b)/

You could always contact McCulloch (see down the page on the second link above)

Rheek
June 2019

This is required for my McCullock Elrctrolux Virginia hedge cutter model 542

robert pite
June 2019

On what? Make? Model?

Rheek
June 2019