| Listed in parts books | Not catalogued by year yet |
A/A UNIT C.C.W. 10 DEGREE
Automatic advance unit, counter-clockwise rotation, 10 degree advance.
This is an A/A unit, meaning an automatic advance unit, listed as counter-clockwise rotation with 10 degree advance. It's a Lucas-style component tied to the ignition side of the engine, working with the magneto or distributor to advance the spark timing as engine speed comes up.
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Our records on this one are thin - we don't have a lot of catalog history to draw from beyond the basic listing. If you're trying to match this to a specific magneto or distributor setup, give us a call and we'll go through it with you before you order, since advance units are sensitive to rotation direction and degree spec.
If you already know your unit calls for a C.C.W. 10 degree advance mechanism, this matches that description. Worth double-checking against what's currently on the bike before swapping it in.
Sorry if we got something wrong here. If you think this information isn't correct, .