| Also known as | F9041 |
| Diagram | Fig. 12 — GEARBOX COVER – GEARCHANGE – KICKSTART CRANK · ref 4 |
| Subsystem | engine bottom |
| Listed in parts books | 1968, 1970–1971, 1973 |
Washer — shakeproof, chainguard fixing
Shakeproof washer for the chainguard fixing point, PN 82-9041 (also listed as F9041).
This is a shakeproof washer used at the chainguard fixing point, part number 82-9041, also known under the earlier F9041 designation. It's a small hardware item that appears across a handful of parts-book figures tied to the gearbox cover, gearchange and kickstart crank area, the mudguards and chainguard, the crankcase, and the footrests and brake linkage — so it's one of those common fasteners that shows up wherever a chainguard bolt needs to stay put.
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A shakeproof washer works by biting slightly into the surfaces on either side of a joint, resisting the fastener backing out from vibration. On a motorcycle with a chain and guard bolted near moving gearbox and crankcase components, that kind of vibration resistance matters at the fixing points.
Our catalog record ties this part to appearances spanning 1968 through 1973, including a reference tied to the 1970 Trophy 250 supplement. If you're matching this up to a specific model, give us a call and we'll help confirm you've got the right one before you order.
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