| Also known as | E3724 |
| Diagram | Fig. 2 — CRANKCASE · ref 29 |
| Subsystem | engine bottom |
| Listed in parts books | 1964–1970, 1974 |
SPRING,GAUZE RETAINING
A small spring that retains the gauze oil filter inside the crankcase/sump assembly.
70-3724 is the small retaining spring that holds the gauze filter down inside the sump/crankcase assembly. It's a simple part with one job: keep the oil filter gauze seated in its housing so it doesn't shift or lift under oil pressure and flow. The catalog carries this under the legacy alias E3724 as well, and it shows up across crankcase figures spanning 1964 through 1974.
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It's not a glamorous part, but it's the kind of thing that's easy to lose track of when you're servicing the sump filter and pulling things apart on the bench. If you're in there cleaning the gauze, it's worth checking this spring for fatigue or corrosion before you button things back up.
Call the shop if you want us to confirm which crankcase assembly on your bike takes this one — the catalog record ties it to the CRANKCASE figure group but doesn't spell out a specific model.
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