Possibly two stroke with stepped spray tube (I believe these can be changed).
The Amal Concentric L1036 10 1000 series carburetor is suitable for motorbikes like BSA Triumph and Norton Greeves.
4x Float Bowl Gaskets for Amal Concentric Carburettor
2x Float Bowl Gaskets for Amal Concentric Carburettor
AMAL CONCENTRIC 928-930-932 THROTTLE CABLE
AMAL CONCENTRIC 622 624 626 THROTTLE CABLE
ETHANOL RESISTANT 622/069 AMAL CONCENTRIC MK1 MK2 CARB FLOAT BSA NORTON TRIUMPH
FLOAT KIT NEEDLE alloy Viton Tipped for Amal Concentric MK 1 622/197,99-0511