| Diagram | Fig. 16 — Swinging Arm, Suspension Units, Chainguard · ref 20 |
| Subsystem | primary |
| Listed in parts books | 1975 |
Norton Spring
A Norton chainguard-area spring, cataloged for 1975 machines.
This is a spring listed under Norton's parts numbering, tied to the chainguard/swinging arm area rather than anything in the primary drive itself, despite what the subsystem tag might suggest. The catalog shows it appearing in figures covering the swinging arm, suspension units, and chainguard, which points to it being a small tensioning or retaining spring used to keep the chainguard extension seated or under tension.
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Our record on this one is brief - a single catalog appearance tied to 1975. If you're trying to match this up to your bike, give us a call and we'll help confirm it's the right spring before you order.
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