G'day Bic,
The coils are available on eBay.com, they are for LawnBoy mowers in the USA.
Possibly a coil from a Tecumseh may fit but I haven't checked ,a coil would be worth more than a complete mower,
I've heard a few people say they tried selling an old Masport with a D400 and can't get $10. so the mowers are thrown out..
They don't come up often these mowers for sale here but usually I see them for $10 to $20. I think they are easier to find in NZ.
in NZ I'd get a mower for parts here
https://www.trademe.co.nz/a/marketp...earch_string=masport%20%20stroke%20mowerCheers
Max.