| Also known as | E2288 |
| Diagram | Fig. 23 — FRONT BRAKE · ref 32 |
| Subsystem | primary |
| Listed in parts books | 1960–1962, 1964–1970, 1976–1980, 1983, 1985 |
Serrated washer, hose to bracket
A serrated locking washer used at hose-to-bracket fastening points, part number 70-2288.
This is a serrated washer used where a hose meets a bracket, part number 70-2288. It shows up across a wide range of catalog listings — front and rear brake sections, the swinging fork and suspension area, the petrol and oil tank fittings, and the crankshaft and connecting rod pages — which tells you this is a general-purpose fastener washer used in more than one spot on the bike rather than a single dedicated location.
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The serrated edge bites into the mating surfaces to keep the fastener from working loose, which is exactly what you want anywhere a hose clamp or bracket sees vibration. It carries an older factory number, 60-4181, so if your parts book lists that number instead, it's the same washer.
Given how many different assemblies call for this washer, it's worth keeping a few in stock. It's a small, inexpensive item, but it's the kind of thing that's easy to lose or reuse past its useful life, so replacing it when you're in there doing other work isn't a bad habit.
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