| Diagram | Fig. 4 — Engine: Contact Breaker, Timing Cover, Oil Pump, Oil Pressure Relief Valve · ref 1 |
| Subsystem | engine bottom |
| Listed in parts books | 1975 |
Norton Timing Cover
Timing cover for the engine's timing chest, housing the contact breaker, timing gears, and oil pump area.
This is a timing cover, part number 06-6161, off the front of the engine on the models this catalog line covers. It's the housing that closes off the timing chest, where the contact breaker, timing gear, oil pump, and oil pressure relief valve all live. Pull it and you're looking straight at the ignition timing components and the oil pump drive.
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The catalog entry for this one is brief - it only turns up in a single listing tied to the 1975 model year, so we don't have a broader run of years to point to. If you're matching this up to an engine, it's worth confirming the casting and stud pattern against what's on your bike before you order.
Given how central this cover is to the timing chest - it seals up the points, the timing gears, and the oil pressure relief valve all in one housing - getting the fitment right matters. Give the shop a call if you want to talk through what you're working with before committing to this part number.
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