| Listed in parts books | Not catalogued by year yet |
MAIN JET- MONOBLOC MK1 MK2
Main jet, size 210, for the Amal Monobloc Mk1 and Mk2 carburetor.
This is a main jet for the Amal Monobloc carburetor, Mk1 and Mk2 versions. Size is 210, which is the number that gets stamped on the jet itself and is how you'll match it up against what your carb needs. The main jet controls fuel delivery through the mid-to-upper throttle range, so if you're chasing a flat spot or trying to richen or lean out the mixture once the slide is past the pilot circuit, this is one of the parts you'll be swapping to get there.
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Monoblocs were the common Amal carb on a lot of British bikes through the 60s and into the 70s, and jets wear or get lost during cleaning more often than people expect. Worth checking the number on your old jet before ordering to be sure 210 is the step you actually need.
We don't have a lot of extra history on this one in our records beyond what's on the part itself, but it's a straightforward like-for-like replacement piece for the Monobloc Mk1/Mk2 body.
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