I changed the original spark plug (can't buy it) to a BOSCH WSR 6F. But it turned out to be slightly higher and when the saw was working, it began to push out the lid. I modeled the spacer and printed it from TPU 80A.
Largest model needs supports - even a crooked trace from the supports will not interfere.
For printing use elastic, oil- and petrol-resistant filament - medium soft TPU will be the best choice.
The author marked this model as their own original creation.