| Also known as | E11077 |
| Diagram | Fig. 2 — CRANKCASE · ref 45 |
| Subsystem | engine bottom |
| Listed in parts books | 1970–1971, 1974, 1979–1980, 1983 |
SCREW,BREATHER STUB 2BA COUNTERSUNK
A 2BA countersunk screw that holds the breather stub in place on the crankcase.
This is the small countersunk screw that secures the breather stub in the crankcase, part number 71-1077 (also listed as E11077 in the older letter-prefix system). It's a 2BA thread screw, which is the standard fine-thread size used on a lot of these crankcase fittings.
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It shows up in the crankcase figure of the parts books across catalog listings from 1970 to 1983, so it's a long-running item in the bottom-end hardware. If yours has gone missing or rounded off from being over-tightened over the years, it's worth having a spare on hand since it's a small enough part to lose track of during a rebuild.
Check your crankcase breather stub to confirm the countersunk head style and 2BA thread match before ordering, since crankcase hardware varies across the years this part appears in the catalog.
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