| Diagram | Fig. 8 — Chaincases, Chains, Sprockets, Clutch, Alternator · ref 21 |
| Subsystem | primary |
| Listed in parts books | 1975 |
Norton Cap, Timing Inspection
A small timing inspection cap for the primary chaincase, part number 06-0659.
This is a timing inspection cap, part number 06-0659, listed in the primary chaincase area under the inner and outer chaincase / hydraulic tensioner figures. It's a small threaded or push-fit cap that covers the timing inspection hole in the chaincase, letting you check or set ignition timing without pulling the whole cover off.
Read more
Our catalog record ties it to a single appearance in the 1975 model year, and the figure context points to a chaincase with a hydraulic tensioner setup. Given the manufacturer code on file, this looks like a Norton chaincase part rather than a Triumph one, so if you're working on a Triumph, double check before you order.
We don't have much more detail on this one beyond what's above. Give the shop a call and we'll confirm fitment against your specific chaincase before you order.
Sorry if we got something wrong here. If you think this information isn't correct, .