most 50cc 4 stroke takes 5/8
Spark plugs use SAE and not Metric. The one that fits it is the one that fits it.
18MM
5/8"
11/16" (18mm) deep well socket
18 mm
The CR9EH-9 spark plug needs a 16mm or 5/8" socket.
Get a spark plug socket and wrench that fits the plug body and remove it by turning counter-clockwise.
The BPR6ES spark plug typically requires a 5/8-inch (16mm) socket for installation and removal. This size is standard for many automotive spark plugs. Ensure you have a spark plug socket with a rubber insert or magnet to help secure the plug during installation.
It's called a sparkplug because... It creates a spark to ignite the fuel in the pistons, and as with any plug - it fits into a socket.
no,just make sure you get the right one that fits it correctly.
42mm is a standard socket. If you mean "what SAE socket fits," none of them do. BTW, what are you trying to get off that's got a nut that big on it?
well if u get an entire bike with the larger motor and all the wiring intact as long as it fits in your motor compartment of you 50cc scooter it would be fairly easy. all you really have to do is modify the motor mounts, you could cut the ones off the donor bike weld them into you 50cc bike. i know someone who took a late 70's 100cc Indian enduro and put the motor, trans, turn signals, and lights on a 50cc mini chopper and is getting the frame stamped so it will be street legal. its pretty cool