My carby is a Walbro WA-59 off a SRM200 DA Snipper Widget.
I didn't take an image of the carby with the gasket removed because it's the same as the top image and the carby is back on the snipper now.
If it was me I'd just cut a plug from a 5/32 bolt ,screw ,drill bit ,pop rivet ,clevis pin ,cupboard door knob bolt , brass bolt,alloy rod, etc and use a little Loctite
It looks like the plug is included in a $10 kit when you search for a kit for Echo.
With the old Echo points trimmers I find it's worth using a second hand powertorque module to convert them to electronic ignition.
